Interfacial engineering with carbon–graphite–CuδNi1−δO for ambient-air stable composite-based hole-conductor-free perovskite solar cells. Issue 12 (20th November 2020)

• Record Type: Journal Article
• Authors: Wang, Yousheng; Yang, Yuzhao; Wu, Shaohang; Zhang, Cuiling; Wang, Zhen; Hu, Jinlong; Liu, Chong; Guo, Fei; Mai, Yaohua
• Is Part Of: Nanoscale advances. Volume 2:Issue 12(2020)
• Page Start: 5883
• Page End: 5889
• Publication Date: 2020-11-20
• Subjects: 620.5
• DOI: 10.1039/d0na00852d
• Languages: English
• ISSNs: 2516-0230

Abstract

Abstract : Fully-ambient-air processed HCF-PSCs based on carbon–graphite–Cu δ Ni1− δ O composites show not only efficient performance but also remarkably improved photo-, thermal-stability and long-term air stability. Abstract : Ambient air atmosphere is inimical to organic–inorganic halide perovskites and organic hole transport materials, and is, thus, necessarily avoided during device fabrication. To solve this issue, it is highly desirable to design stable perovskite-based composites and device configurations. Here, fully ambient-air and antisolvent-free-processed, stable and all-inorganic metal-oxide selective contact hole-conductor-free perovskite solar cells (HCF-PSCs) based on perovskite-based composites with an interfacial engineering strategy are reported. The formation of perovskite-based composites by interfacial engineering with carbon–graphite–Cu δ Ni1− δ O not only improved interfacial contacts, charge extraction and transport but also passivated trap states of perovskite thin films and charge recombination at the interfaces. Thus, such perovskite composites with interfacial engineering-based HCF-PSCs without encapsulation showed excellent stability by sustaining 94% of initial PCE over 300 days under ambient conditions.