Double inorganic hole extraction layer of Cs:NiOx/CuInS2 for efficiency and stability enhancement of perovskite solar cells. (16th May 2022)

• Record Type: Journal Article
• Authors: Zhang, Zhenlong; Ma, Wenbo; Zhou, Qing; Mao, Yanli
• Is Part Of: International journal of energy research. Volume 46:Number 10(2022)
• Page Start: 13908
• Page End: 13914
• Publication Date: 2022-05-16
• Subjects: enhanced efficiency -- inorganic hole extraction layer -- perovskite solar cells; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Power resources -- Research -- Periodicals; 621.042
• DOI: 10.1002/er.8108
• Languages: English
• ISSNs: 0363-907X

Abstract

Summary: In this work, we construct a double inorganic hole extraction layer (HEL) of Cs:NiOx /CuInS2 by inserting a thin film of Cs:NiOx between the perovskite (FAPbI3 )1‐x (MAPbBr3 )x and CuInS2 layers and fabricate n‐i‐p type perovskite solar cells (PSCs) using Cs:NiOx /CuInS2 as HEL. The efficiency of the PSCs with Cs:NiOx /CuInS2 reaches 18.04% from 16.13% for the devices with single HEL of CuInS2, which is close to the highest efficiency (19.24%) of the devices with double inorganic HEL reported. In addition, the operational stability of the devices with Cs:NiOx /CuInS2 is enhanced. The solar cells based on double HEL of Cs:NiOx /CuInS2 maintains 95% of the original PCE after keeping 32 days in ambient air, while the devices based on single HEL of CuInS2 keeps only 84% of the original PCE. In addition, the thermal stability of the PSCs with Cs:NiOx /CuInS2 is also enhanced compared with the devices based on CuInS2 . The results demonstrate that the application of double HEL of Cs:NiOx /CuInS2 can enhance the performance and stability of PSCs simultaneously.