Abstract:
In recent years, the perovskite-based solar cell has emerged as a fast-growing photovoltaic (PV) technology owing to improved performance, cost-effectiveness, and ease to use in unconventional places. The lead (Pb) based perovskite solar cells (PSC) have achieved the best results so far due to their favorable chemical and optoelectronic properties. However, the toxicity of Pb hindered the development of such PSCs. In this work tin (Sn) based, eco-friendly n-i-p PSC device with methyl ammonium tin triiodide (MASnI3) as an absorber layer has been proposed because of its non-toxic nature and similarity in optoelectronic properties to Pb. The proposed PSC has been designed by a solar cell capacitance simulator (SCAPS) based on continuity and Poisson equations. Owing to the large band gap and low absorptivity, ZnSe has been chosen as ETL. While kesterite CZTSe has been selected as HTL due to its non-toxicity, cost-effectiveness, tunable band gap, and electron affinity. The effect of charge transport layers (CTLs) on the quantum efficiency (QE), band alignment diagram, electric potential, recombination, IV curve, and power conversion efficiency (PCE) of the proposed structure have been analyzed. Furthermore, the influence of defect density on the optimized thickness of the absorber layer and PCE of PSC has been analyzed in detail. Based on the results the optimized thickness of the perovskite layer for defect density of E13 was found to be 1.1 µm with PCE of 30.45%, for E14 0.9 µm with 29.21%, and E15 0.7 µm with 26.21%. The results achieved in this work showed a lot of promise for further implementation of nontoxic Sn-based perovskite solar cells.
Page(s):
0-0
DOI:
DOI not available
Published:
Journal: Sixth International Conference on Sustainability in Process Industries (SPI) 19-20 Octover 2022 (Book of Abstracts), Volume: 0, Issue: 0, Year: 2022
Keywords:
optimization
,
Perovskite solar cell
,
Defect density
,
SCAPS
,
Charge transport layer
,
MASnI3