Analysis Of SnS2 Buffer Layer And SnS Back Surface Layer Based CZTS Solar Cells Using SCAPS

TL;DR

This paper simulates CZTS solar cells with SnS2 buffer and SnS back surface layers, showing improved efficiency and potential to replace standard CdS layers, using SCAPS software.

Contribution

It introduces a novel simulation of CZTS solar cells with SnS2 buffer and SnS passivation layers, demonstrating enhanced performance over traditional configurations.

Findings

SnS2 buffer layer improves efficiency compared to CdS.

Back surface passivation with SnS enhances performance.

Simulation indicates SnS2 as a viable CdS replacement.

Abstract

A Copper-Zinc-Tin-Sulphide (CZTS)based solar cell with a modified ce3ll configuration of Mo/SnS/CZTS/SnS2/ZnO is simulated using SCAPS. An SnS2 buffer layer is used in simulation instead of the standard CdS layer. An additional back surface passivation layer of SnS is added in the modified cell configuration. An improvement in the solar cell efficiency compared to the standard CdS buffer based solar cell configuration Mo/CZTS/CdS/ZnO is found. The observations suggest the possibility of using SnS2 as a potential replacement of CdS. In addition, the use of a back surface passivation layer leads to improved solar cell performance.