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Xu, M. (author), Wachters, A.J.H. (author), Van Deelen, J. (author), Mourad, M.C.D. (author), Buskens, P.J.P. (author)We present a systematic study of the effect of variation of the zinc oxide (ZnO) and copper indium gallium (di)selenide (CIGS) layer thickness on the absorption characteristics of CIGS solar cells using a simulation program based on finite element method (FEM). We show that the absorption in the CIGS layer does not decrease monotonically with...journal article 2014