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This paper presents an investigation on the effects of micropillar physical parameters (height, pitch and diameter) on the optical and electrical performance of ZnO/ZnTe core-shell micropillar solar cells. It also studies the effect of the doping level in the absorber layer on the device's performance considering the impact of Auger's recombination. A Finite-Difference Time-Domain (FDTD) solver, Lumerical, is used for the numerical analysis. Based on the range of parameters analyzed it was concluded that for a core-shell ZnO/ZnTe micropillar solar cell a 4 m height, a 0.5 m pitch, a 70 nm ZnTe shell thickness and a 2.16 x 10 19 cm-3 doping concentration for ZnTe achieves an efficiency of 17%.

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