Abstract
Mathematical modelling provides a comprehensive understanding of the charge transport process inside solar cells and determines various elements affecting their performance. In the present paper, various proposed CH3NH3Pb(I1−xBrx)3-based perovskite solar cells consisting of Cd1−xZnxS as electron transport layer (ETL) have been mathematically simulated using the SCAPS-1D simulator. Hole transport layers (HTLs) of poly(3-hexylthiophene) (P3HT), Cu2O, CuSbS2, and CuO were each employed separately to form various proposed solar cells. These perovskite solar cells were compared with existing CH3NH3PbI3−xClx-based perovskite solar cells consisting of Cd1−xZnxS as the ETL and CuI as the HTL. Amongst the proposed HTLs, P3HT exhibited the best efficiency of 28.28%. During the simulation, thickness of 700 nm for the absorber layer [CH3NH3Pb(I1−xBrx)3] of the proposed perovskite solar cells was found suitable for effective solar cell design. These mathematically simulated results demonstrate the optimum efficiency of the solar cell, which will aid in the design of high-efficiency solar cells in the near future.
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