Homogenized NiOx nanoparticles for improved hole transport in inverted perovskite solar cells

• 成果类型: Article
• 署名作者: Yu, Shiqi; Xiong, Zhuang; Zhou, Haitao; Zhang, Qian; Wang, Zhenhan; Ma, Fei; Qu, Zihan; Zhao, Yang; Chu, Xinbo; Zhang, Xingwang; You, Jingbi
• 署名单位: Chinese Academy of Sciences; Institute of Semiconductors, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-13272
• DOI: 10.1126/science.adj8858
• 发表日期: 2023-12-22
• 页码: 1399-+
• 关键词: interfaces; EFFICIENCY; films

摘要

The power conversion efficiency (PCE) of inverted perovskite solar cells (PSCs) is still lagging behind that of conventional PSCs, in part because of inefficient carrier transport and poor morphology of hole transport layers (HTLs). We optimized self-assembly of [4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid (Me-4PACz) onto nickel oxide (NiOx) nanoparticles as an HTL through treatment with hydrogen peroxide, which created a more uniform dispersion of nanoparticles with high conductivity attributed to the formation of Ni3+ as well as surface hydroxyl groups for bonding. A 25.2% certified PCE for a mask size of 0.074 square centimeters was obtained. This device maintained 85.4% of the initial PCE after 1000 hours of stabilized power output operation under 1 sun light irradiation at about 50 degrees C and 85.1% of the initial PCE after 500 hours of accelerated aging at 85 degrees C. We obtained a PCE of 21.0% for a minimodule with an aperture area of 14.65 square centimeters.