Abstract
Abstract The potential impact of thin film perovskite solar cell is metamorphic as it can reduce the cost associated with manufacturing of solar cells. Perovskite materials have impressive optoelectronic properties such as high mobility, high absorption and long diffusion length of charge carriers. The power conversion efficiency of lead contained metal halide perovskite has reached up to 23%, but lead is a highly toxic element thereby harmful for environment. In this work Sn based perovskite (CH3NH3SnI3) has been proposed and investigated using hole transport layer. Along with absorption of light by active layer, charge separation and extraction also plays a crucial role in controlling the device performance. The potential of ZnTe as hole collector has been explored. Here we report modeling, simulation and fabrication of lead-free CH3NH3SnI3 perovskite solar cell processed on ZnTe as hole transport layer. Remarkably, we achieve efficiency of 22.96% in simulation and 8.41% in fabrication.
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