High efficiency wide gap Cu(In,Ga)Se₂ solar cells: Influence of buffer layer characteristics.

ABSTRACT: Wide-gap Cu(In,Ga)Se₂ (CIGS) solar cells exhibit a superior match to the solar spectrum, resulting in a higher ideal efficiency (E _ff). However, in reality, their device E _ff is lower than that of narrow-gap CIGS solar cells. This study aims to identify the factors that limit the performance enhancement of wide-gap CIGS solar cells, focusing on the characteristics of the buffer layer. The influence of the thickness and doping concentration of the CdS layer on the built-in electric field and interfacial recombination of the heterojunction has been investigated through simulation. The simulation results indicate that when the doping concentration of the CdS layer is lower than or similar to that of the CGS layer, decreasing the thickness of the

SUBMITTER: Cheng S 

PROVIDER: S-EPMC11401165 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature