Numerical investigation of eco-friendly MASnI₃ perovskite-based solar cell: effect of defect density and hole transport layer

Abstract

Eco-friendly lead-free perovskite CH3NH3SnI3 (MASnI3) based solar cell device was simulated using the one-dimensional solar capacitance tool (SCAPS 1D). In this work, we investigate the effect of several parameters such as the thickness and the defect density in the absorber layer. We focus on the effect of defect densities at the TiO2/MASnI3, MASnI3/Spiro-OMeTAD interfaces on the photovoltaic performances. Our results show that the best performances were obtained with an absorber thickness layer kept of 1.1 μm, and for low defect densities in the active layer and at the TiO2/MASnI3 interface. In addition, we have studied the effect of various hole transport layers (HTL) compounds such as Cu2O, CuO, CuI, CuSCN, PTAA, PEDOT: PSS, and MEH-PPV. Our results show the significant impact of valence band offset and hole mobility on device performances. The champion device has a power conversion efficiency (PCE) of 27.77 %, a current density (Jsc) of 34.6 mA/cm2, an open circuit voltage (Voc) of 0.96 V and a fill factor (FF) of 83.34 %. This work can provide imperative guidelines to researchers for the design of efficient eco-friendly perovskite solar cells.

Novel double graded perovskite materials for performance increment of perovskite solar cell using extensive numerical analysis

“…A 1.1 μm thick MASnI 3 light absorber layer when incorporated in a PSC configuration composed of TiO 2 and Spiro-OMeTAD as the ETL and HTL respectively provided a PCE of 27.77% when modelled with the help of SCAPS-1D package. The study also showed that the valence band offset and the hole mobility play a noteworthy influence in determining the performance parameters of the PSC configurations [48]. These modelling studies show that the performance efficiency of MASnI 3 -based PSCs is extremely high.…”

Efficiency Improvement of Lead‐Free La2NiMnO6‐Based Double Perovskite Solar Cells Using Numerical Simulation

“…However, a significant energy level mismatch between the perovskite and HTL causes this PSC drop, making it difficult for charge carriers to penetrate the interface energy barrier. [ 39 ]…”

“…However, a significant energy level mismatch between the perovskite and HTL causes this PSC drop, making it difficult for charge carriers to penetrate the interface energy barrier. [39] 3.5. Optimization of Series and Shunt Resistant Solar cell devices have several layers, such as an absorber layer, ETL, HTL, and back and front contacts.…”

Effect of phthalocyanine-based charge transport layers on unleaded KSnI3 perovskite solar cell

“…Pindolia et al performed a density functional theory (DFT) study of halogenated CuPc and obtained 79.01% FF and 22.3% PCE for a MAPbI 3 PSC with phthalocyanine-based CTLs [52]. Tin-based perovskites have been studied extensively due to the malignant lead component [53][54][55][56][57][58][59][60][61][62]. A density functional theory (DFT) study was carried out for KSnI 3 to establish its potential as an absorber material in PSCs.…”