Phosphate glasses with great concentration of uranyl and rare earths ions and their films for solar cell concentrators

Vladimir Sytko; Marina Pershina

doi:10.1117/12.217345

23 August 1995 Phosphate glasses with great concentration of uranyl and rare earths ions and their films for solar cell concentrators

Vladimir Sytko, Marina Pershina

Author Affiliations +

Proceedings Volume 2531, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIV; (1995) https://doi.org/10.1117/12.217345
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

In past years much interest developed in lanthanides and uranyl doped glasses. The energy transfer phenomenon in these glasses produced interest for preparation of highly efficient laser materials and optical transformators. We present some experimental results about mechanism of donor-acceptor interaction and energy transfer in highly activated by uranyl and three-valent rare earths ions cesium-phosphate glasses and luminescent converters and concentrators, using these glasses and films. Our investigation shows that donor-acceptor interaction proceeds by exchange mechanism. Efficiency of energy transfer is about 0.9 for optimal composition of glasses. The quantum yield of luminescence of some lanthanides, in particular Nd³⁺, is more than 0.8. The reactive ions sputtering and following thermal treatment allows us to receive optical quality thin films of the discussed materials. Efficiency of transfer and quantum yield of luminescence in films reaches more than 0.8 and 0.7 accordingly. Preliminary experiments of using the glasses as transforming filters in lasers showed their prospectives for the overall laser's efficiency increasing. Collectors made on the base of UO₂²⁺ - Nd³⁺ glasses allows them to increase on about 40% effectiveness of solar light energy in electric energy transformations by some cells.

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Vladimir Sytko and Marina Pershina "Phosphate glasses with great concentration of uranyl and rare earths ions and their films for solar cell concentrators", Proc. SPIE 2531, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIV, (23 August 1995); https://doi.org/10.1117/12.217345

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