A numerical study on defect densities of double absorber CH3NH3PbI3/ CIGS solar cell

Numerical simulation of a solar cell with double absorber layers has been done using SCAPS-1D software. The use of two absorber layers minimises the implement of a hole transporter in the present work. Leadbased perovskite structure Methylammonium lead iodide (CH3NH3PbI3) and Copper Indium Gallium Selenide (CIGS) are used for simulation. An investigated study of impact of defect densities of the absorber layers as well as the interface has been done. The model Au/CH3NH3PbI3/CIGS/TiO2/ZnO:Al yields an efficiency of 28.15%. This device also obtains an enhanced fill factor of 78.44%. This device model can undergo fabrication process for research purposes. Copyright (c) 2022 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the Second International Conference on Engineering Materials, Metallurgy and Manufacturing.

Automated summary

Numerical simulation of a solar cell with double absorber layers using lead-based perovskite and copper indium gallium selemide as materials. The impact of defect densities of the absorber layers and interface are investigated. The simulated device shows high efficiency and enhanced fill factor, which can be used for research purposes.