Abstract

Photon conversion is exhibited in a borate (LKZBSB) glass system containing Eu3+, and the enhanced characteristic emissions of Eu3+ with the codoping of Ce3+ have been verified. A large Judd–Ofelt intensity parameter Ω2 of Eu3+ indicates a high asymmetrical and strong covalent environment around rare-earth (RE) ions in LKZBSB glasses and spontaneous emission probability and a maximum emission cross section of the dominant D50F27 transition were derived to be 370  s1 and 1.28×1021  cm2, respectively, revealing the potential UVvisible photon-conversion capacity of Eu3+. Absolutely quantitative evaluation illustrates that Eu3+ is a favorable photon-conversion center to achieve high photon-conversion efficiency. The addition of Ce3+ is beneficial to realizing effective red emission of Eu3+, which possesses commercial value by decreasing the dopant of expensive europium compounds. As an expectation, this photon-conversion LKZBSB glass system can promote the development of a photon downconversion layer for solar cells, which are particularly used in outer space with intense UV radiation.

© 2016 Optical Society of America

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