Abstract
Photon conversion is exhibited in a borate (LKZBSB) glass system containing , and the enhanced characteristic emissions of with the codoping of have been verified. A large Judd–Ofelt intensity parameter of 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 transition were derived to be and , respectively, revealing the potential photon-conversion capacity of . Absolutely quantitative evaluation illustrates that is a favorable photon-conversion center to achieve high photon-conversion efficiency. The addition of is beneficial to realizing effective red emission of , 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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