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Fabrication and characterisation of Cu(In,Ga)Se-2 solar cells on polyimide

Zachmann, H. and Puttnins, S. and Yakushev, M. V. and Luckert, F. and Martin, R. W. and Karotki, A. V. and Gremenok, V. F. and Mudryi, A. V. (2011) Fabrication and characterisation of Cu(In,Ga)Se-2 solar cells on polyimide. Thin Solid Films, 519 (21). pp. 7264-7267. ISSN 0040-6090

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Abstract

Solar cells with the structure ZnO:Al/i-ZnO/CdS/Cu(In,Ga)Se-2/Mo/polyimide were examined using a range of techniques. The elemental composition of the Cu(InGa)Se-2 (CIGS) layers, their crystalline structure and optical properties were studied. Photoluminescence (PL) spectra of the CIGS absorber layers were studied as functions of temperature (4.2-240 K) and excitation power density. The band gap energy E-g of the CIGS layers was determined by employing photoluminescence excitation (PLE) spectroscopy. The influence of sodium incorporation on the PL properties of CIGS was analysed. Correlations of the optical properties of the CIGS absorber layers and the photovoltaic parameters of the solar cells were revealed.