Photosensitivity of ZnO/CdS/Cu(In,Ga)Se2/Mo thin-film solar cells fabricated on various substrates |
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| Authors: | V. Yu. Rud Yu. V. Rud V. F. Gremenok E. I. Terukov B. Kh. Bairamov Y. W. Song |
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| Affiliation: | 1.St. Petersburg State Polytechnical University,St. Petersburg,Russia;2.Ioffe Physical Technical Institute,Russian Academy of Sciences,St. Petersburg,Russia;3.Scientific-Practical Material Research Center,National Academy of Sciences of Belarus,Minsk,Belarus;4.Korea Polytechnic University,Siheung-city, Gyeonggi-do,Republic of Korea |
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| Abstract: | The results of measuring the first spectra of relative quantum efficiency for photoconversion in thin-film ZnO/CdS/Cu(In,Ga)Se2/Mo solar cells fabricated on rigid (glass) and flexible (polyimide) substrates are reported. The character of interband transitions has been studied and the values of the band gap for direct and indirect transitions in thin Cu(In,Ga)Se2 films are determined. It is found that a shift of the maximal photosensitivity for the obtained solar cells to shorter wavelengths is observed as rigid substrates are replaced by flexible ones. It is concluded that thin-film Cu(In,Ga)Se2 structures can be used as broad-band photoconverters of solar radiation. |
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