Novel Inorganic-Organic Heterojunction Solar Cell based Pt/CuSbS2/Abs/ZnO/FTO Perovskite Using Two MAPI and FAPI Absorbent Materials

Abstract

In this paper, three perovskite solar cell (PSCs) configurations were proposed and compared in order to improve their performance. The first suggested cell consists of six materials arranged in the sequence FTO/ETL/FAPI/MAPI/HTL/Pt, comprising
two active sub-layers, FAPI and MAPI. The performance of this double-active-layer cell was compared to that of two single-layer cells, each containing an only active layer of perovskite material used in proposed cell, with FTO/ETL/MAPI/HTL/Pt and
FTO/ETL/FAPI/HTL/Pt configurations. The simulations were conducted using SCAPS-1D software. The study investigated the impact of active layer thickness, doping density, and defect density on J-V characteristics for each cell, comparing the results obtained at the same time. Additionally, the defects density in interfaces: MAPI/HTL, FAPI/MAPI and ETL/FAPI of the double-absorber cell were optimized.
The best results were achieved by the double-layer cell with thickness of 1500 nm, defect density of 1010 cm-3 and doping density of 1020 cm-3 for FAPI and MAPI materials. The optimized cell exhibited Voc = 1.41 V, Jsc = 27.88 mA/cm2, FF = 90.12%, and PCE = 35.46 %.