Modeling and simulation of CZTS-perovskite sandwiched tandem solar cell

Özet

In this research work, a solar cell capacitance simulator (SCAPS-1D) was used in the modeling and simulationof sandwiched perovskite solar cells (PSCSs) with a planar heterojunction structure in the arrangement of the sandwichedmodel (FTO/ZnO/CZTS/PSCS/CZTS/HTM). Two different configurations, 121 and 111, of the sandwiching absorberlayer of the device were simulated and compared with the perovskite without sandwiching, using an absorber layer ofstep length thickness of 25 nm, and varied from 100 nm to 500 nm. The band gap diagram, I-V characteristics curve,and other parameters were constructed. The best configuration for better performance was then determined, from whichfurther simulations were carried out. Efficiency of 22.57% was achieved, which shows that having a combination of twodifferent absorbers was achievable with considerable photon conversion efficiency.