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Author Talewar, R. A. ♦ Joshi, C. P. ♦ Moharil, S. V.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ABSORPTION ♦ ABSORPTION SPECTRA ♦ CADMIUM SULFIDES ♦ CADMIUM TELLURIDES ♦ CONCENTRATION RATIO ♦ EFFICIENCY ♦ FLUORINE COMPOUNDS ♦ MANGANESE ADDITIONS ♦ PHOTOLUMINESCENCE ♦ PHOTONS ♦ PHOTOVOLTAIC CONVERSION ♦ PHOTOVOLTAIC EFFECT ♦ POTASSIUM COMPOUNDS ♦ POWDERS ♦ SILICON COMPOUNDS ♦ SOLAR CELLS ♦ SURFACES ♦ THIN FILMS ♦ X-RAY DIFFRACTION
Abstract The efficiency of CdTe/CdS solar cell can be significantly improved by using luminescent down-shifting material on their front surface. Taking this into account a red emitting phosphor K{sub 2}Si{sub 1-x}F{sub 6}:xMn{sup 4+} (x=10 to 25 mol %) has been synthesized through wet chemical method. The as-synthesized materials were characterized by powder x-ray diffraction (XRD) and photoluminescence (PL) techniques. The photoluminescence studies of K{sub 2}SiF{sub 6}:Mn{sup 4+} revealed enhancement in the emission intensity, when Mn{sup 4+} concentration was increased from 10 mol % to 25 mol %. This red emitting phosphor efficiently absorbs the photons typically in the region 300-500 nm and re-emits in the region where the photovoltaic device exhibits significantly better response. The results show the possibility of enhancing the photovoltaic conversion efficiency of CdTe thin film solar cell by modifying the absorption spectra and utilising the energy in the UV-blue part of the solar spectrum.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-23
Publisher Place United States
Volume Number 1731
Issue Number 1


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