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Proceedings Paper

Phosphate glasses with great concentration of uranyl and rare earths ions and their films for solar cell concentrators
Author(s): Vladimir Sytko; Marina Pershina
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Paper 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.

Paper Details

Date Published: 23 August 1995
PDF: 9 pages
Proc. SPIE 2531, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIV, (23 August 1995); doi: 10.1117/12.217345
Show Author Affiliations
Vladimir Sytko, Gomel State Univ. (Russia)
Marina Pershina, Gomel State Univ. (Russia)

Published in SPIE Proceedings Vol. 2531:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIV
Carl M. Lampert; Satyen K. Deb; Claes-Goeran Granqvist, Editor(s)

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