Abstract
Perovskite solar cells are becoming dominant alternative for the traditional solar cells reaching an efficiency of 22.1% in a short span of eight years (2008-2016). In this work we designed a tin based perovskite simulated model with novel architecture of Glass/ZnO:Al/TiO 2 /CH 3 NH 3 SnI 3 /CuI/Au and analysed using the solar cell capacitance simulator (SCAPS-1D), which is well adapted to study the photovoltaic architectures. Using this software tool, we studied the effect of absorber layer parameters on the photovoltaic parameters of the designed model. We optimized the thickness, defect density, band gap of absorber layer and operating temperature of the model by simulating at various conditions. With the optimized thickness (0.6 µm), defect density of absorber layer (10 14 cm -3 ), band gap(1.3 eV) the encouraging result of maximum power conversion efficiency(PCE) 24.82%, the short circuit current density(Jsc) is 25.67 mA/cm 2 , and fill factor(FF) is78.14% and open circuit voltage(Voc) is 1.0413V are predicted. The results are indicating that the lead free CH 3 NH 3 SnI 3 is having the great potential to be an absorber layer with suitable in organic hole transport material like CuI to achieve high efficiency. This simulation model will become a good guide for the fabrication of high efficiency tin based perovskite solar cell.
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