Design of high-performance perovskite solar cells adapted to the tandem configuration

Abstract

Thin film based solar cells offer the added advantage of presenting a low temperature coefficient of power and are usually suggested for hot climates. Perovskite solar cells have reached today a record efficiency of 25.2%. In addition, they demonstrated a great compatibility to be used as the top cell in tandem cells, either with CIGS, CZTS, perovskite or silicon heterojunction (HIT) as the bottom cell. The purpose of this work is to design and analyse the selected planar perovskite solar cells (PSCs) reaching high power conversion efficiency and stability with layers configuration of glass substrate/FTO/TiO2/MAPbI(3-x)Clx/CuSCN/Au, using the SCAPS-1D software. The thickness of MAPbI(3-x)Clx and FTO was varied from 0.4 μm to 1.4 μm and from 0.02 μm to 0.5 μm respectively and the best results are observed at 1.1 μm of perovskite absorber and 0.05 FTO μm. The best performances of this device architecture, calculated with SCAPS software are cell efficiency of 27.79% with an open circuit of 1.2 V, a short circuit current of 26.04 mA/cm2 and a fill factor of 88.85%.