Numerical study of inorganic Cs2TiBr6 solar cells with a double hole transport layers

Abstract

The proposed Cesium Titanium Bromide (Cs2TiBr6) has piqued curiosity as an absorber layer for the next-generation renewable energy. This is especially due to their important properties such as high stability and nontoxicity. Nevertheless, the performance of solar cells based on this double-perovskite is still lower than methylammonium lead halide perovskite solar cells, which limited their commercialization in the real world. Up till now, the highest efficiency of the experimentally constructed PSC has been 3.28%, where Cs2TiBr6 was utilized as an absorber layer and both inorganic (TiO2) and organic (P3HT, C60) as charge transport materials. . In this work, Numerical modeling tools were used to optimize the active layer with the novel architecture Au /P3HT/CuSbS2/ Cs2TiBr6/TiO2/FTO using solar cell capacitance simulator (SCAPS-1D). The results obtained using double hole transport layers provide a higher efficiency for Cs2TiBr6 perovskite solar cell compared with the conventional structure.