Co-Self-Assembled Monolayers Modified NiOx for Stable Inverted Perovskite Solar Cells

Co-Self-Assembled Monolayers Modified NiOx for Stable Inverted Perovskite Solar Cells

© 2024 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 36(2024), 16 vom: 12. Apr., Seite e2311970
1. Verfasser: Cao, Qi (VerfasserIn)
Weitere Verfasser: Wang, Tianyue, Pu, Xingyu, He, Xilai, Xiao, Mingchao, Chen, Hui, Zhuang, Lvchao, Wei, Qi, Loi, Hok-Leung, Guo, Peng, Kang, Bochun, Feng, Guangpeng, Zhuang, Jing, Feng, Guitao, Li, Xuanhua, Yan, Feng
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article buried interface inverted perovskite solar cells self‐assembled monolayer
Beschreibung
Zusammenfassung:© 2024 Wiley‐VCH GmbH.
[4-(3,6-dimethyl-9H-carbazol-9yl)butyl]phosphonic acid (Me-4PACz) self-assembled molecules (SAM) are an effective method to solve the problem of the buried interface of NiOx in inverted perovskite solar cells (PSCs). However, the Me-4PACz end group (carbazole core) cannot forcefully passivate defects at the bottom of the perovskite film. Here, a Co-SAM strategy is employed to modify the buried interface of PSCs. Me-4PACz is doped with phosphorylcholine chloride (PC) to form a Co-SAM to improve the monolayer coverage and reduce leakage current. The phosphate group and chloride ions (Cl-) in PC can inhibit NiOx surface defects. Meantime, the quaternary ammonium ions and Cl- in PC can fill organic cations and halogen vacancies in the perovskite film to enable defects passivation. Moreover, Co-SAM can promote the growth of perovskite crystals, collaboratively solve the problem of buried defects, suppress nonradiative recombination, accelerate carrier transmission, and relieve the residual stress of the perovskite film. Consequently, the Co-SAM modified devices show power conversion efficiencies as high as 25.09% as well as excellent device stability with 93% initial efficiency after 1000 h of operation under one-sun illumination. This work demonstrates the novel approach for enhancing the performance and stability of PSCs by modifying Co-SAM on NiOx
Beschreibung:Date Revised 18.04.2024
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202311970