Open-circuit voltage, fill factor, and efficiency of a CdS/CdTe solar cell
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- Kosyachenko, L.A. & Grushko, E.V. Semiconductors (2010) 44: 1375. doi:10.1134/S1063782610100234
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The dependences of the open-circuit voltage, fill factor, and efficiency of the thin-film CdS/CdTe solar cell on the resistivity ρ and carrier lifetime τ in the absorbing CdTe layer were studied. In the common case in which the uncompensated acceptor concentration and the electron lifetime in the CdTe layer are within 1015–1016 cm−3 and 10−10–10−9 s, the calculation results correspond to the achieved efficiency of the best thin-film CdS/CdTe solar cells. It was shown that, by decreasing ρ and increasing τ in the absorbing CdTe layer, the open-circuit voltage, fill factor, and efficiency can be substantially increased, with their values approaching the theoretical limit for such devices.