Simulation of Carbon-Based Perovskite Solar Cell Using PBS-TBAI as a Hole Transport Layer (HTL)

Perovskite material is a propitious candidate for high-efficiency and cost-efficient solar cells. Inorganic and organic perovskite materials show outstanding electrical and optical characteristics. As an absorber layer, it attracts the researchers due to its tunable bandgap, higher carrier mobility, and higher absorption coefficient. In this article, CH3NH3PbI3-based solar cell is proposed with architecture FTO/TiO2/CH3NH3PbI3/PbS-TBAI/Carbon. The present study shows that carbon as back contact is cost-efficient material and shows stable performance. Thickness variation of absorber layer (CH3NH3PbI3) and variation in temperature has been done for device optimization and its J–V characteristics and quantum efficiency are studied. Optimum thickness of absorber layer for donor density of 1.0×1013 cm−3 and acceptor density of 1.0×1012 cm−3 is estimated to be 1 μm. This n-i-p planar architecture stands out with a fill factor of 36.75% and a power conversion efficiency of 7.59% with Jsc and Voc value of 24.55 mA/cm2 and 0.84 V respectively. Without resistance the device architecture bears Voc 0.8 V, Jsc 25.73 mA/cm2, FF 80.33% and PCE of 16.24%. The simulation has been performed using SCAPS-1D at an optimized temperature of 300 K and at an AM 1.5 G illumination. The present study is useful in selecting material parameters and fabricating efficient and low-cost perovskite solar cells.