Abstract

β-NaGdF4:Yb3+/Er3+ nanoparticles (NPs) co-doped with Mo3+ ions were prepared for the first time using a solvothermal process at 300 °C. The influence of the doping concentration of Mo3+ ions on the growth and upconversion (UC) luminescence properties of the resulting β-NaGdF4:Yb3+/Er3+ nanocrystals were investigated in detail. The morphology and size of the β-NaGdF4:Yb3+/Er3+ nanocrystals were influenced by the concentration of the Mo3+ dopant ions. A possible mechanism for this behavior is proposed in this report. It was found that the upconversion luminescence intensity of the green emissions of the upconversion NPs co-doped with 10% Mo3+ ions was enhanced 9 fold and that the red emission was enhanced 4 fold. The experimental results suggest that the enhanced UC luminescence from the Mo3+ doped β-NaGdF4:Yb3+/Er3+ nanocrystals may have potential practical applications.

© 2016 Optical Society of America

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    [Crossref]
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    [Crossref]
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    [Crossref]
  23. Y. Cui, S. Zhao, M. Han, P. Li, L. Zhang, and Z. Xu, “Synthesis of water dispersible hexagonal-phase NaYF4:Yb, Er nanoparticles with high efficient upconversion fluorescence,” J. Nanosci. Nanotechnol. 14(5), 3597–3601 (2014).
    [Crossref] [PubMed]
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2016 (1)

W. Zhu, S. Zhao, Z. Liang, Y. Yang, J. Zhang, and Z. Xu, “The color tuning and mechanism of upconversion emission from green to red in NaLuF4: Yb3+/Ho3+ nanocrystals by codoping with Ce3+,” J. Alloys Compd. 659, 146–151 (2016).
[Crossref]

2015 (1)

C. Wang and X. Cheng, “Influence of Cr3+ ions doping on growth and upconversion luminescence properties of β-NaYF4: Yb3+/Er3+ microcrystals,” J. Alloys Compd. 649, 196–203 (2015).
[Crossref]

2014 (4)

Z. Liang, Y. Cui, S. Zhao, L. Tian, J. Zhang, and Z. Xu, “The enhanced upconversion fluorescence and almost unchanged particle size of β-NaYF4: Yb3+, Er3+ nanoparticles by codoping with K+ ions,” J. Alloys Compd. 610, 432–437 (2014).
[Crossref]

Y. Cui, S. Zhao, M. Han, P. Li, L. Zhang, and Z. Xu, “Synthesis of water dispersible hexagonal-phase NaYF4:Yb, Er nanoparticles with high efficient upconversion fluorescence,” J. Nanosci. Nanotechnol. 14(5), 3597–3601 (2014).
[Crossref] [PubMed]

W. Gao, H. Zheng, Q. Han, E. He, F. Gao, and R. Wang, “Enhanced red upconversion luminescence by codoping Ce3+ in β-NaY (Gd 0.4) F4: Yb3+/Ho3+ nanocrystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(27), 5327–5334 (2014).
[Crossref]

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

2013 (3)

M. Pang, J. Feng, S. Song, Z. Wang, and H. Zhang, “Phase-tunable synthesis and upconversion photoluminescence of rare-earth-doped sodium scandium fluoride nanocrystals,” CrystEngComm 15(35), 6901–6904 (2013).
[Crossref]

G. Chen, C. Yang, and P. N. Prasad, “Nanophotonics and nanochemistry: controlling the excitation dynamics for frequency up- and down-conversion in lanthanide-doped nanoparticles,” Acc. Chem. Res. 46(7), 1474–1486 (2013).
[Crossref] [PubMed]

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

2012 (2)

D. Chen, L. Lei, A. Yang, Z. Wang, and Y. Wang, “Ultra-broadband near-infrared excitable upconversion core/shell nanocrystals,” Chem. Commun. (Camb.) 48(47), 5898–5900 (2012).
[Crossref] [PubMed]

N. M. Idris, M. K. Gnanasammandhan, J. Zhang, P. C. Ho, R. Mahendran, and Y. Zhang, “In vivo photodynamic therapy using upconversion nanoparticles as remote-controlled nanotransducers,” Nat. Med. 18(10), 1580–1585 (2012).
[Crossref] [PubMed]

2011 (1)

F. Wang, R. Deng, J. Wang, Q. Wang, Y. Han, H. Zhu, X. Chen, and X. Liu, “Tuning upconversion through energy migration in core-shell nanoparticles,” Nat. Mater. 10(12), 968–973 (2011).
[Crossref] [PubMed]

2010 (1)

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

2009 (3)

C.-J. Carling, J.-C. Boyer, and N. R. Branda, “Remote-control photoswitching using NIR light,” J. Am. Chem. Soc. 131(31), 10838–10839 (2009).
[Crossref] [PubMed]

S. A. Hilderbrand, F. Shao, C. Salthouse, U. Mahmood, and R. Weissleder, “Upconverting luminescent nanomaterials: application to in vivo bioimaging,” Chem. Commun. (Camb.) 28, 4188–4190 (2009).
[Crossref] [PubMed]

F. Wang and X. Liu, “Recent advances in the chemistry of lanthanide-doped upconversion nanocrystals,” Chem. Soc. Rev. 38(4), 976–989 (2009).
[Crossref] [PubMed]

2008 (3)

G. Chen, H. Liu, H. Liang, G. Somesfalean, and Z. Zhang, “Upconversion emission enhancement in Yb3+/Er3+-codoped Y2O3 nanocrystals by tridoping with Li+ ions,” J. Mater. Chem. C Mater. Opt. Electron. Devices 112, 12030–12036 (2008).

Z. Xiang-Yu, Z. Hai-Rong, and G. Dang-Li, “Spectroscopic study of thulium doped transparent glass ceramics,” Chin. Phys. B 17(11), 4328–4332 (2008).
[Crossref]

G. Chen, H. Liu, G. Somesfalean, Y. Sheng, H. Liang, Z. Zhang, Q. Sun, and F. Wang, “Enhancement of the upconversion radiation in Y2O3: Er3+ nanocrystals by codoping with Li+ ions,” Appl. Phys. Lett. 92(11), 113114 (2008).
[Crossref]

2007 (1)

X. Zhang, J. Zhang, X. Zhang, L. Chen, S. Lu, and X.-J. Wang, “Enhancement of red fluorescence and afterglow in CaTiO3: Pr3+ by addition of Lu2O3,” J. Lumin. 122-123, 958–960 (2007).
[Crossref]

2006 (1)

L. Wang and Y. Li, “Green upconversion nanocrystals for DNA detection,” Chem. Commun. (Camb.) 24, 2557–2559 (2006).
[Crossref] [PubMed]

2004 (2)

F. Auzel, “Upconversion and anti-stokes processes with f and d ions in solids,” Chem. Rev. 104(1), 139–174 (2004).
[Crossref] [PubMed]

S. Heer, K. Kömpe, H. U. Güdel, and M. Haase, “Highly Efficient Multicolour Upconversion Emission in Transparent Colloids of Lanthanide‐Doped NaYF4 Nanocrystals,” Adv. Mater. 16(23-24), 2102–2105 (2004).
[Crossref]

1994 (1)

R. N. Bhargava, D. Gallagher, X. Hong, and A. Nurmikko, “Optical properties of manganese-doped nanocrystals of ZnS,” Phys. Rev. Lett. 72(3), 416–419 (1994).
[Crossref] [PubMed]

Auzel, F.

F. Auzel, “Upconversion and anti-stokes processes with f and d ions in solids,” Chem. Rev. 104(1), 139–174 (2004).
[Crossref] [PubMed]

Bhargava, R. N.

R. N. Bhargava, D. Gallagher, X. Hong, and A. Nurmikko, “Optical properties of manganese-doped nanocrystals of ZnS,” Phys. Rev. Lett. 72(3), 416–419 (1994).
[Crossref] [PubMed]

Boyer, J.-C.

C.-J. Carling, J.-C. Boyer, and N. R. Branda, “Remote-control photoswitching using NIR light,” J. Am. Chem. Soc. 131(31), 10838–10839 (2009).
[Crossref] [PubMed]

Branda, N. R.

C.-J. Carling, J.-C. Boyer, and N. R. Branda, “Remote-control photoswitching using NIR light,” J. Am. Chem. Soc. 131(31), 10838–10839 (2009).
[Crossref] [PubMed]

Carling, C.-J.

C.-J. Carling, J.-C. Boyer, and N. R. Branda, “Remote-control photoswitching using NIR light,” J. Am. Chem. Soc. 131(31), 10838–10839 (2009).
[Crossref] [PubMed]

Chen, D.

D. Chen, L. Lei, A. Yang, Z. Wang, and Y. Wang, “Ultra-broadband near-infrared excitable upconversion core/shell nanocrystals,” Chem. Commun. (Camb.) 48(47), 5898–5900 (2012).
[Crossref] [PubMed]

Chen, G.

G. Chen, C. Yang, and P. N. Prasad, “Nanophotonics and nanochemistry: controlling the excitation dynamics for frequency up- and down-conversion in lanthanide-doped nanoparticles,” Acc. Chem. Res. 46(7), 1474–1486 (2013).
[Crossref] [PubMed]

G. Chen, H. Liu, H. Liang, G. Somesfalean, and Z. Zhang, “Upconversion emission enhancement in Yb3+/Er3+-codoped Y2O3 nanocrystals by tridoping with Li+ ions,” J. Mater. Chem. C Mater. Opt. Electron. Devices 112, 12030–12036 (2008).

G. Chen, H. Liu, G. Somesfalean, Y. Sheng, H. Liang, Z. Zhang, Q. Sun, and F. Wang, “Enhancement of the upconversion radiation in Y2O3: Er3+ nanocrystals by codoping with Li+ ions,” Appl. Phys. Lett. 92(11), 113114 (2008).
[Crossref]

Chen, H.

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

Chen, L.

X. Zhang, J. Zhang, X. Zhang, L. Chen, S. Lu, and X.-J. Wang, “Enhancement of red fluorescence and afterglow in CaTiO3: Pr3+ by addition of Lu2O3,” J. Lumin. 122-123, 958–960 (2007).
[Crossref]

Chen, X.

F. Wang, R. Deng, J. Wang, Q. Wang, Y. Han, H. Zhu, X. Chen, and X. Liu, “Tuning upconversion through energy migration in core-shell nanoparticles,” Nat. Mater. 10(12), 968–973 (2011).
[Crossref] [PubMed]

Cheng, X.

C. Wang and X. Cheng, “Influence of Cr3+ ions doping on growth and upconversion luminescence properties of β-NaYF4: Yb3+/Er3+ microcrystals,” J. Alloys Compd. 649, 196–203 (2015).
[Crossref]

Cui, Y.

Z. Liang, Y. Cui, S. Zhao, L. Tian, J. Zhang, and Z. Xu, “The enhanced upconversion fluorescence and almost unchanged particle size of β-NaYF4: Yb3+, Er3+ nanoparticles by codoping with K+ ions,” J. Alloys Compd. 610, 432–437 (2014).
[Crossref]

Y. Cui, S. Zhao, M. Han, P. Li, L. Zhang, and Z. Xu, “Synthesis of water dispersible hexagonal-phase NaYF4:Yb, Er nanoparticles with high efficient upconversion fluorescence,” J. Nanosci. Nanotechnol. 14(5), 3597–3601 (2014).
[Crossref] [PubMed]

Dang-Li, G.

Z. Xiang-Yu, Z. Hai-Rong, and G. Dang-Li, “Spectroscopic study of thulium doped transparent glass ceramics,” Chin. Phys. B 17(11), 4328–4332 (2008).
[Crossref]

Deng, R.

F. Wang, R. Deng, J. Wang, Q. Wang, Y. Han, H. Zhu, X. Chen, and X. Liu, “Tuning upconversion through energy migration in core-shell nanoparticles,” Nat. Mater. 10(12), 968–973 (2011).
[Crossref] [PubMed]

Dong, Y.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Duan, Z.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Feng, J.

M. Pang, J. Feng, S. Song, Z. Wang, and H. Zhang, “Phase-tunable synthesis and upconversion photoluminescence of rare-earth-doped sodium scandium fluoride nanocrystals,” CrystEngComm 15(35), 6901–6904 (2013).
[Crossref]

Gallagher, D.

R. N. Bhargava, D. Gallagher, X. Hong, and A. Nurmikko, “Optical properties of manganese-doped nanocrystals of ZnS,” Phys. Rev. Lett. 72(3), 416–419 (1994).
[Crossref] [PubMed]

Gao, F.

W. Gao, H. Zheng, Q. Han, E. He, F. Gao, and R. Wang, “Enhanced red upconversion luminescence by codoping Ce3+ in β-NaY (Gd 0.4) F4: Yb3+/Ho3+ nanocrystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(27), 5327–5334 (2014).
[Crossref]

Gao, W.

W. Gao, H. Zheng, Q. Han, E. He, F. Gao, and R. Wang, “Enhanced red upconversion luminescence by codoping Ce3+ in β-NaY (Gd 0.4) F4: Yb3+/Ho3+ nanocrystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(27), 5327–5334 (2014).
[Crossref]

Gnanasammandhan, M. K.

N. M. Idris, M. K. Gnanasammandhan, J. Zhang, P. C. Ho, R. Mahendran, and Y. Zhang, “In vivo photodynamic therapy using upconversion nanoparticles as remote-controlled nanotransducers,” Nat. Med. 18(10), 1580–1585 (2012).
[Crossref] [PubMed]

Güdel, H. U.

S. Heer, K. Kömpe, H. U. Güdel, and M. Haase, “Highly Efficient Multicolour Upconversion Emission in Transparent Colloids of Lanthanide‐Doped NaYF4 Nanocrystals,” Adv. Mater. 16(23-24), 2102–2105 (2004).
[Crossref]

Haase, M.

S. Heer, K. Kömpe, H. U. Güdel, and M. Haase, “Highly Efficient Multicolour Upconversion Emission in Transparent Colloids of Lanthanide‐Doped NaYF4 Nanocrystals,” Adv. Mater. 16(23-24), 2102–2105 (2004).
[Crossref]

Hai-Rong, Z.

Z. Xiang-Yu, Z. Hai-Rong, and G. Dang-Li, “Spectroscopic study of thulium doped transparent glass ceramics,” Chin. Phys. B 17(11), 4328–4332 (2008).
[Crossref]

Han, M.

Y. Cui, S. Zhao, M. Han, P. Li, L. Zhang, and Z. Xu, “Synthesis of water dispersible hexagonal-phase NaYF4:Yb, Er nanoparticles with high efficient upconversion fluorescence,” J. Nanosci. Nanotechnol. 14(5), 3597–3601 (2014).
[Crossref] [PubMed]

Han, Q.

W. Gao, H. Zheng, Q. Han, E. He, F. Gao, and R. Wang, “Enhanced red upconversion luminescence by codoping Ce3+ in β-NaY (Gd 0.4) F4: Yb3+/Ho3+ nanocrystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(27), 5327–5334 (2014).
[Crossref]

Han, Y.

F. Wang, R. Deng, J. Wang, Q. Wang, Y. Han, H. Zhu, X. Chen, and X. Liu, “Tuning upconversion through energy migration in core-shell nanoparticles,” Nat. Mater. 10(12), 968–973 (2011).
[Crossref] [PubMed]

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

He, E.

W. Gao, H. Zheng, Q. Han, E. He, F. Gao, and R. Wang, “Enhanced red upconversion luminescence by codoping Ce3+ in β-NaY (Gd 0.4) F4: Yb3+/Ho3+ nanocrystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(27), 5327–5334 (2014).
[Crossref]

Heer, S.

S. Heer, K. Kömpe, H. U. Güdel, and M. Haase, “Highly Efficient Multicolour Upconversion Emission in Transparent Colloids of Lanthanide‐Doped NaYF4 Nanocrystals,” Adv. Mater. 16(23-24), 2102–2105 (2004).
[Crossref]

Hilderbrand, S. A.

S. A. Hilderbrand, F. Shao, C. Salthouse, U. Mahmood, and R. Weissleder, “Upconverting luminescent nanomaterials: application to in vivo bioimaging,” Chem. Commun. (Camb.) 28, 4188–4190 (2009).
[Crossref] [PubMed]

Ho, P. C.

N. M. Idris, M. K. Gnanasammandhan, J. Zhang, P. C. Ho, R. Mahendran, and Y. Zhang, “In vivo photodynamic therapy using upconversion nanoparticles as remote-controlled nanotransducers,” Nat. Med. 18(10), 1580–1585 (2012).
[Crossref] [PubMed]

Hong, M.

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

Hong, X.

R. N. Bhargava, D. Gallagher, X. Hong, and A. Nurmikko, “Optical properties of manganese-doped nanocrystals of ZnS,” Phys. Rev. Lett. 72(3), 416–419 (1994).
[Crossref] [PubMed]

Idris, N. M.

N. M. Idris, M. K. Gnanasammandhan, J. Zhang, P. C. Ho, R. Mahendran, and Y. Zhang, “In vivo photodynamic therapy using upconversion nanoparticles as remote-controlled nanotransducers,” Nat. Med. 18(10), 1580–1585 (2012).
[Crossref] [PubMed]

Kömpe, K.

S. Heer, K. Kömpe, H. U. Güdel, and M. Haase, “Highly Efficient Multicolour Upconversion Emission in Transparent Colloids of Lanthanide‐Doped NaYF4 Nanocrystals,” Adv. Mater. 16(23-24), 2102–2105 (2004).
[Crossref]

Lei, L.

D. Chen, L. Lei, A. Yang, Z. Wang, and Y. Wang, “Ultra-broadband near-infrared excitable upconversion core/shell nanocrystals,” Chem. Commun. (Camb.) 48(47), 5898–5900 (2012).
[Crossref] [PubMed]

Li, P.

Y. Cui, S. Zhao, M. Han, P. Li, L. Zhang, and Z. Xu, “Synthesis of water dispersible hexagonal-phase NaYF4:Yb, Er nanoparticles with high efficient upconversion fluorescence,” J. Nanosci. Nanotechnol. 14(5), 3597–3601 (2014).
[Crossref] [PubMed]

Li, Y.

L. Wang and Y. Li, “Green upconversion nanocrystals for DNA detection,” Chem. Commun. (Camb.) 24, 2557–2559 (2006).
[Crossref] [PubMed]

Li, Y. H.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Liang, H.

G. Chen, H. Liu, G. Somesfalean, Y. Sheng, H. Liang, Z. Zhang, Q. Sun, and F. Wang, “Enhancement of the upconversion radiation in Y2O3: Er3+ nanocrystals by codoping with Li+ ions,” Appl. Phys. Lett. 92(11), 113114 (2008).
[Crossref]

G. Chen, H. Liu, H. Liang, G. Somesfalean, and Z. Zhang, “Upconversion emission enhancement in Yb3+/Er3+-codoped Y2O3 nanocrystals by tridoping with Li+ ions,” J. Mater. Chem. C Mater. Opt. Electron. Devices 112, 12030–12036 (2008).

Liang, Z.

W. Zhu, S. Zhao, Z. Liang, Y. Yang, J. Zhang, and Z. Xu, “The color tuning and mechanism of upconversion emission from green to red in NaLuF4: Yb3+/Ho3+ nanocrystals by codoping with Ce3+,” J. Alloys Compd. 659, 146–151 (2016).
[Crossref]

Z. Liang, Y. Cui, S. Zhao, L. Tian, J. Zhang, and Z. Xu, “The enhanced upconversion fluorescence and almost unchanged particle size of β-NaYF4: Yb3+, Er3+ nanoparticles by codoping with K+ ions,” J. Alloys Compd. 610, 432–437 (2014).
[Crossref]

Liao, J.

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

Lim, C. S.

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

Lin, M.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Liu, H.

G. Chen, H. Liu, H. Liang, G. Somesfalean, and Z. Zhang, “Upconversion emission enhancement in Yb3+/Er3+-codoped Y2O3 nanocrystals by tridoping with Li+ ions,” J. Mater. Chem. C Mater. Opt. Electron. Devices 112, 12030–12036 (2008).

G. Chen, H. Liu, G. Somesfalean, Y. Sheng, H. Liang, Z. Zhang, Q. Sun, and F. Wang, “Enhancement of the upconversion radiation in Y2O3: Er3+ nanocrystals by codoping with Li+ ions,” Appl. Phys. Lett. 92(11), 113114 (2008).
[Crossref]

Liu, M.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Liu, X.

F. Wang, R. Deng, J. Wang, Q. Wang, Y. Han, H. Zhu, X. Chen, and X. Liu, “Tuning upconversion through energy migration in core-shell nanoparticles,” Nat. Mater. 10(12), 968–973 (2011).
[Crossref] [PubMed]

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

F. Wang and X. Liu, “Recent advances in the chemistry of lanthanide-doped upconversion nanocrystals,” Chem. Soc. Rev. 38(4), 976–989 (2009).
[Crossref] [PubMed]

Lu, S.

X. Zhang, J. Zhang, X. Zhang, L. Chen, S. Lu, and X.-J. Wang, “Enhancement of red fluorescence and afterglow in CaTiO3: Pr3+ by addition of Lu2O3,” J. Lumin. 122-123, 958–960 (2007).
[Crossref]

Lu, T. J.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Lu, Y.

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

Mahendran, R.

N. M. Idris, M. K. Gnanasammandhan, J. Zhang, P. C. Ho, R. Mahendran, and Y. Zhang, “In vivo photodynamic therapy using upconversion nanoparticles as remote-controlled nanotransducers,” Nat. Med. 18(10), 1580–1585 (2012).
[Crossref] [PubMed]

Mahmood, U.

S. A. Hilderbrand, F. Shao, C. Salthouse, U. Mahmood, and R. Weissleder, “Upconverting luminescent nanomaterials: application to in vivo bioimaging,” Chem. Commun. (Camb.) 28, 4188–4190 (2009).
[Crossref] [PubMed]

Nurmikko, A.

R. N. Bhargava, D. Gallagher, X. Hong, and A. Nurmikko, “Optical properties of manganese-doped nanocrystals of ZnS,” Phys. Rev. Lett. 72(3), 416–419 (1994).
[Crossref] [PubMed]

Pang, M.

M. Pang, J. Feng, S. Song, Z. Wang, and H. Zhang, “Phase-tunable synthesis and upconversion photoluminescence of rare-earth-doped sodium scandium fluoride nanocrystals,” CrystEngComm 15(35), 6901–6904 (2013).
[Crossref]

Pingguan-Murphy, B.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Prasad, P. N.

G. Chen, C. Yang, and P. N. Prasad, “Nanophotonics and nanochemistry: controlling the excitation dynamics for frequency up- and down-conversion in lanthanide-doped nanoparticles,” Acc. Chem. Res. 46(7), 1474–1486 (2013).
[Crossref] [PubMed]

Qiu, J.

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

Qiu, M.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Salthouse, C.

S. A. Hilderbrand, F. Shao, C. Salthouse, U. Mahmood, and R. Weissleder, “Upconverting luminescent nanomaterials: application to in vivo bioimaging,” Chem. Commun. (Camb.) 28, 4188–4190 (2009).
[Crossref] [PubMed]

Shao, F.

S. A. Hilderbrand, F. Shao, C. Salthouse, U. Mahmood, and R. Weissleder, “Upconverting luminescent nanomaterials: application to in vivo bioimaging,” Chem. Commun. (Camb.) 28, 4188–4190 (2009).
[Crossref] [PubMed]

Sheng, Y.

G. Chen, H. Liu, G. Somesfalean, Y. Sheng, H. Liang, Z. Zhang, Q. Sun, and F. Wang, “Enhancement of the upconversion radiation in Y2O3: Er3+ nanocrystals by codoping with Li+ ions,” Appl. Phys. Lett. 92(11), 113114 (2008).
[Crossref]

Somesfalean, G.

G. Chen, H. Liu, H. Liang, G. Somesfalean, and Z. Zhang, “Upconversion emission enhancement in Yb3+/Er3+-codoped Y2O3 nanocrystals by tridoping with Li+ ions,” J. Mater. Chem. C Mater. Opt. Electron. Devices 112, 12030–12036 (2008).

G. Chen, H. Liu, G. Somesfalean, Y. Sheng, H. Liang, Z. Zhang, Q. Sun, and F. Wang, “Enhancement of the upconversion radiation in Y2O3: Er3+ nanocrystals by codoping with Li+ ions,” Appl. Phys. Lett. 92(11), 113114 (2008).
[Crossref]

Song, S.

M. Pang, J. Feng, S. Song, Z. Wang, and H. Zhang, “Phase-tunable synthesis and upconversion photoluminescence of rare-earth-doped sodium scandium fluoride nanocrystals,” CrystEngComm 15(35), 6901–6904 (2013).
[Crossref]

Song, Z.

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

Sun, Q.

G. Chen, H. Liu, G. Somesfalean, Y. Sheng, H. Liang, Z. Zhang, Q. Sun, and F. Wang, “Enhancement of the upconversion radiation in Y2O3: Er3+ nanocrystals by codoping with Li+ ions,” Appl. Phys. Lett. 92(11), 113114 (2008).
[Crossref]

Tian, L.

Z. Liang, Y. Cui, S. Zhao, L. Tian, J. Zhang, and Z. Xu, “The enhanced upconversion fluorescence and almost unchanged particle size of β-NaYF4: Yb3+, Er3+ nanoparticles by codoping with K+ ions,” J. Alloys Compd. 610, 432–437 (2014).
[Crossref]

Wang, C.

C. Wang and X. Cheng, “Influence of Cr3+ ions doping on growth and upconversion luminescence properties of β-NaYF4: Yb3+/Er3+ microcrystals,” J. Alloys Compd. 649, 196–203 (2015).
[Crossref]

Wang, F.

F. Wang, R. Deng, J. Wang, Q. Wang, Y. Han, H. Zhu, X. Chen, and X. Liu, “Tuning upconversion through energy migration in core-shell nanoparticles,” Nat. Mater. 10(12), 968–973 (2011).
[Crossref] [PubMed]

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

F. Wang and X. Liu, “Recent advances in the chemistry of lanthanide-doped upconversion nanocrystals,” Chem. Soc. Rev. 38(4), 976–989 (2009).
[Crossref] [PubMed]

G. Chen, H. Liu, G. Somesfalean, Y. Sheng, H. Liang, Z. Zhang, Q. Sun, and F. Wang, “Enhancement of the upconversion radiation in Y2O3: Er3+ nanocrystals by codoping with Li+ ions,” Appl. Phys. Lett. 92(11), 113114 (2008).
[Crossref]

Wang, J.

F. Wang, R. Deng, J. Wang, Q. Wang, Y. Han, H. Zhu, X. Chen, and X. Liu, “Tuning upconversion through energy migration in core-shell nanoparticles,” Nat. Mater. 10(12), 968–973 (2011).
[Crossref] [PubMed]

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

Wang, L.

L. Wang and Y. Li, “Green upconversion nanocrystals for DNA detection,” Chem. Commun. (Camb.) 24, 2557–2559 (2006).
[Crossref] [PubMed]

Wang, Q.

F. Wang, R. Deng, J. Wang, Q. Wang, Y. Han, H. Zhu, X. Chen, and X. Liu, “Tuning upconversion through energy migration in core-shell nanoparticles,” Nat. Mater. 10(12), 968–973 (2011).
[Crossref] [PubMed]

Wang, R.

W. Gao, H. Zheng, Q. Han, E. He, F. Gao, and R. Wang, “Enhanced red upconversion luminescence by codoping Ce3+ in β-NaY (Gd 0.4) F4: Yb3+/Ho3+ nanocrystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(27), 5327–5334 (2014).
[Crossref]

Wang, X.-J.

X. Zhang, J. Zhang, X. Zhang, L. Chen, S. Lu, and X.-J. Wang, “Enhancement of red fluorescence and afterglow in CaTiO3: Pr3+ by addition of Lu2O3,” J. Lumin. 122-123, 958–960 (2007).
[Crossref]

Wang, Y.

D. Chen, L. Lei, A. Yang, Z. Wang, and Y. Wang, “Ultra-broadband near-infrared excitable upconversion core/shell nanocrystals,” Chem. Commun. (Camb.) 48(47), 5898–5900 (2012).
[Crossref] [PubMed]

Wang, Z.

M. Pang, J. Feng, S. Song, Z. Wang, and H. Zhang, “Phase-tunable synthesis and upconversion photoluminescence of rare-earth-doped sodium scandium fluoride nanocrystals,” CrystEngComm 15(35), 6901–6904 (2013).
[Crossref]

D. Chen, L. Lei, A. Yang, Z. Wang, and Y. Wang, “Ultra-broadband near-infrared excitable upconversion core/shell nanocrystals,” Chem. Commun. (Camb.) 48(47), 5898–5900 (2012).
[Crossref] [PubMed]

Weissleder, R.

S. A. Hilderbrand, F. Shao, C. Salthouse, U. Mahmood, and R. Weissleder, “Upconverting luminescent nanomaterials: application to in vivo bioimaging,” Chem. Commun. (Camb.) 28, 4188–4190 (2009).
[Crossref] [PubMed]

Wu, H.

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

Xiang-Yu, Z.

Z. Xiang-Yu, Z. Hai-Rong, and G. Dang-Li, “Spectroscopic study of thulium doped transparent glass ceramics,” Chin. Phys. B 17(11), 4328–4332 (2008).
[Crossref]

Xu, F.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Xu, J.

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

Xu, Z.

W. Zhu, S. Zhao, Z. Liang, Y. Yang, J. Zhang, and Z. Xu, “The color tuning and mechanism of upconversion emission from green to red in NaLuF4: Yb3+/Ho3+ nanocrystals by codoping with Ce3+,” J. Alloys Compd. 659, 146–151 (2016).
[Crossref]

Z. Liang, Y. Cui, S. Zhao, L. Tian, J. Zhang, and Z. Xu, “The enhanced upconversion fluorescence and almost unchanged particle size of β-NaYF4: Yb3+, Er3+ nanoparticles by codoping with K+ ions,” J. Alloys Compd. 610, 432–437 (2014).
[Crossref]

Y. Cui, S. Zhao, M. Han, P. Li, L. Zhang, and Z. Xu, “Synthesis of water dispersible hexagonal-phase NaYF4:Yb, Er nanoparticles with high efficient upconversion fluorescence,” J. Nanosci. Nanotechnol. 14(5), 3597–3601 (2014).
[Crossref] [PubMed]

Yan, D.

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

Yang, A.

D. Chen, L. Lei, A. Yang, Z. Wang, and Y. Wang, “Ultra-broadband near-infrared excitable upconversion core/shell nanocrystals,” Chem. Commun. (Camb.) 48(47), 5898–5900 (2012).
[Crossref] [PubMed]

Yang, C.

G. Chen, C. Yang, and P. N. Prasad, “Nanophotonics and nanochemistry: controlling the excitation dynamics for frequency up- and down-conversion in lanthanide-doped nanoparticles,” Acc. Chem. Res. 46(7), 1474–1486 (2013).
[Crossref] [PubMed]

Yang, Y.

W. Zhu, S. Zhao, Z. Liang, Y. Yang, J. Zhang, and Z. Xu, “The color tuning and mechanism of upconversion emission from green to red in NaLuF4: Yb3+/Ho3+ nanocrystals by codoping with Ce3+,” J. Alloys Compd. 659, 146–151 (2016).
[Crossref]

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

Yang, Z.

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

Yin, Z.

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

Zhang, C.

F. Wang, Y. Han, C. S. Lim, Y. Lu, J. Wang, J. Xu, H. Chen, C. Zhang, M. Hong, and X. Liu, “Simultaneous phase and size control of upconversion nanocrystals through lanthanide doping,” Nature 463(7284), 1061–1065 (2010).
[Crossref] [PubMed]

Zhang, H.

M. Pang, J. Feng, S. Song, Z. Wang, and H. Zhang, “Phase-tunable synthesis and upconversion photoluminescence of rare-earth-doped sodium scandium fluoride nanocrystals,” CrystEngComm 15(35), 6901–6904 (2013).
[Crossref]

Zhang, J.

W. Zhu, S. Zhao, Z. Liang, Y. Yang, J. Zhang, and Z. Xu, “The color tuning and mechanism of upconversion emission from green to red in NaLuF4: Yb3+/Ho3+ nanocrystals by codoping with Ce3+,” J. Alloys Compd. 659, 146–151 (2016).
[Crossref]

Z. Liang, Y. Cui, S. Zhao, L. Tian, J. Zhang, and Z. Xu, “The enhanced upconversion fluorescence and almost unchanged particle size of β-NaYF4: Yb3+, Er3+ nanoparticles by codoping with K+ ions,” J. Alloys Compd. 610, 432–437 (2014).
[Crossref]

N. M. Idris, M. K. Gnanasammandhan, J. Zhang, P. C. Ho, R. Mahendran, and Y. Zhang, “In vivo photodynamic therapy using upconversion nanoparticles as remote-controlled nanotransducers,” Nat. Med. 18(10), 1580–1585 (2012).
[Crossref] [PubMed]

X. Zhang, J. Zhang, X. Zhang, L. Chen, S. Lu, and X.-J. Wang, “Enhancement of red fluorescence and afterglow in CaTiO3: Pr3+ by addition of Lu2O3,” J. Lumin. 122-123, 958–960 (2007).
[Crossref]

Zhang, L.

Y. Cui, S. Zhao, M. Han, P. Li, L. Zhang, and Z. Xu, “Synthesis of water dispersible hexagonal-phase NaYF4:Yb, Er nanoparticles with high efficient upconversion fluorescence,” J. Nanosci. Nanotechnol. 14(5), 3597–3601 (2014).
[Crossref] [PubMed]

Zhang, X.

X. Zhang, J. Zhang, X. Zhang, L. Chen, S. Lu, and X.-J. Wang, “Enhancement of red fluorescence and afterglow in CaTiO3: Pr3+ by addition of Lu2O3,” J. Lumin. 122-123, 958–960 (2007).
[Crossref]

X. Zhang, J. Zhang, X. Zhang, L. Chen, S. Lu, and X.-J. Wang, “Enhancement of red fluorescence and afterglow in CaTiO3: Pr3+ by addition of Lu2O3,” J. Lumin. 122-123, 958–960 (2007).
[Crossref]

Zhang, Y.

N. M. Idris, M. K. Gnanasammandhan, J. Zhang, P. C. Ho, R. Mahendran, and Y. Zhang, “In vivo photodynamic therapy using upconversion nanoparticles as remote-controlled nanotransducers,” Nat. Med. 18(10), 1580–1585 (2012).
[Crossref] [PubMed]

Zhang, Z.

G. Chen, H. Liu, H. Liang, G. Somesfalean, and Z. Zhang, “Upconversion emission enhancement in Yb3+/Er3+-codoped Y2O3 nanocrystals by tridoping with Li+ ions,” J. Mater. Chem. C Mater. Opt. Electron. Devices 112, 12030–12036 (2008).

G. Chen, H. Liu, G. Somesfalean, Y. Sheng, H. Liang, Z. Zhang, Q. Sun, and F. Wang, “Enhancement of the upconversion radiation in Y2O3: Er3+ nanocrystals by codoping with Li+ ions,” Appl. Phys. Lett. 92(11), 113114 (2008).
[Crossref]

Zhao, S.

W. Zhu, S. Zhao, Z. Liang, Y. Yang, J. Zhang, and Z. Xu, “The color tuning and mechanism of upconversion emission from green to red in NaLuF4: Yb3+/Ho3+ nanocrystals by codoping with Ce3+,” J. Alloys Compd. 659, 146–151 (2016).
[Crossref]

Y. Cui, S. Zhao, M. Han, P. Li, L. Zhang, and Z. Xu, “Synthesis of water dispersible hexagonal-phase NaYF4:Yb, Er nanoparticles with high efficient upconversion fluorescence,” J. Nanosci. Nanotechnol. 14(5), 3597–3601 (2014).
[Crossref] [PubMed]

Z. Liang, Y. Cui, S. Zhao, L. Tian, J. Zhang, and Z. Xu, “The enhanced upconversion fluorescence and almost unchanged particle size of β-NaYF4: Yb3+, Er3+ nanoparticles by codoping with K+ ions,” J. Alloys Compd. 610, 432–437 (2014).
[Crossref]

Zhao, Y.

M. Lin, Y. Zhao, M. Liu, M. Qiu, Y. Dong, Z. Duan, Y. H. Li, B. Pingguan-Murphy, T. J. Lu, and F. Xu, “Synthesis of upconversion NaYF4: Yb3+, Er3+ particles with enhanced luminescent intensity through control of morphology and phase,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(19), 3671–3676 (2014).
[Crossref]

Zheng, H.

W. Gao, H. Zheng, Q. Han, E. He, F. Gao, and R. Wang, “Enhanced red upconversion luminescence by codoping Ce3+ in β-NaY (Gd 0.4) F4: Yb3+/Ho3+ nanocrystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 2(27), 5327–5334 (2014).
[Crossref]

Zhou, D.

J. Liao, Z. Yang, H. Wu, D. Yan, J. Qiu, Z. Song, Y. Yang, D. Zhou, and Z. Yin, “Enhancement of the up-conversion luminescence of Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 nanoparticles by photonic crystals,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(40), 6541–6546 (2013).
[Crossref]

Zhu, H.

F. Wang, R. Deng, J. Wang, Q. Wang, Y. Han, H. Zhu, X. Chen, and X. Liu, “Tuning upconversion through energy migration in core-shell nanoparticles,” Nat. Mater. 10(12), 968–973 (2011).
[Crossref] [PubMed]

Zhu, W.

W. Zhu, S. Zhao, Z. Liang, Y. Yang, J. Zhang, and Z. Xu, “The color tuning and mechanism of upconversion emission from green to red in NaLuF4: Yb3+/Ho3+ nanocrystals by codoping with Ce3+,” J. Alloys Compd. 659, 146–151 (2016).
[Crossref]

Acc. Chem. Res. (1)

G. Chen, C. Yang, and P. N. Prasad, “Nanophotonics and nanochemistry: controlling the excitation dynamics for frequency up- and down-conversion in lanthanide-doped nanoparticles,” Acc. Chem. Res. 46(7), 1474–1486 (2013).
[Crossref] [PubMed]

Adv. Mater. (1)

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Chin. Phys. B (1)

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C. Wang and X. Cheng, “Influence of Cr3+ ions doping on growth and upconversion luminescence properties of β-NaYF4: Yb3+/Er3+ microcrystals,” J. Alloys Compd. 649, 196–203 (2015).
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Nature (1)

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Figures (6)

Fig. 1
Fig. 1 XRD patterns of NaGdF4:20 mol%Yb3+/2 mol% Er3+xmol% Mo3+ (x = 0, 5, 10, 15, and 20 mol%) nanoparticles and amplified XRD patterns of the main diffraction peaks
Fig. 2
Fig. 2 (a)-(e) TEM images of NaGdF4:20 mol%Yb3+/2 mol% Er3+ nanocrystals with xmol% Mo3+ ions (x = 0, 5, 10, 15, and 20 mol%); (f) the resulting diameter distribution; (g)-(h)EDS images with 5% mol and 10% mol Mo3+
Fig. 3
Fig. 3 (a) UC luminescence spectra of the NaGdF4:20mol% Yb3+/2mol% Er3+ nanocrystals codoped with 0-20mol% Mo3+ions. (b) integral intensity of green and red emissions as a function of Mo3+ ion concentration.
Fig. 4
Fig. 4 Lifetimes of the (a) 4S3/24I15/2 and (b)4F9/24I15/2 states in NaGdF4:Yb3+/Er3+ crystals codoped with 0-20 mol% Mo3+ ions.
Fig. 5
Fig. 5 Power dependence of UC emissions of NaGdF4:Yb,Er of (a) 10 mol% and (b) 0 mol% dispersions in cyclohexane with a 980 nm semiconductor laser.
Fig. 6
Fig. 6 Energy transfer mechanism diagram of NaGdF4:Yb,Er

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