Abstract

For single-layer antireflection (AR) on glass, a low refractive index (n) AR layer is required to achieve high AR efficiency, which limits the selection of materials. The double-layered AR structure has a lower requirement on materials’ n but is typically used for narrow waveband AR, and photovoltaic glass covers require broadband AR to increase the whole-spectrum solar energy transmittance. With the help of a multilayered optical simulation, we optimized the n and thickness of the single and double layered AR structure and found that, for broadband AR, double-layered structure only showed AR efficiency advantages in very high or low top layers’ n compared to single AR layer structure. For a n=1.45 top layer of the double layer structure, the optimized reflectance is 2.57% (single side), while the optimized reflectance of a single AR layer with n=1.45 is 2.87%, which is a negligible AR efficiency advantage (0.30%) when considering production costs. Moreover, in our experiment, using SiO2 and SiO2 and TiO2 composite layers, the absorption of short wavelengths by TiO2 ostensibly cancelled this advantage out (92.87% compare to the single layer’s 92.98% for single side AR).

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Porous SiO2/MgF2 broadband antireflection coatings for superstrate-type silicon-based tandem cells

Na-Fu Wang, Ting-Wei Kuo, Yu-Zen Tsai, Shi-Xiong Lin, Pin-Kun Hung, Chiung-Lin Lin, and Mau-Phon Houng
Opt. Express 20(7) 7445-7453 (2012)

Double-layered TiO2 photoelectrode with particulate structure prepared by one-step soaking method

Mi Sun Park, Sang-Ju Lee, Shi-Joon Sung, and Dae-Hwan Kim
Opt. Mater. Express 4(11) 2401-2408 (2014)

Effect of substrate overetching and heat treatment of titanium oxide waveguide gratings and thin films on their optical properties

Muhammad Rizwan Saleem, Seppo Honkanen, and Jari Turunen
Appl. Opt. 52(3) 422-432 (2013)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (5)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription