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Efficient and stable wide bandgap perovskite solar cells through surface passivation with long alkyl chain organic cations

Duong, The; Pham, Huyen T.; Yin, Yanting; Peng, Jun; Mahmud, Md Arafat; Wu, Yiliang; Shen, Heping; Zheng, Jianghui; Tran, Phu Thanh; Lu, Teng; Li, Li; Kumar, Anand; Andersson, Gunther; Ho-Baillie, Anita; Liu, Yun; White, Thomas; Weber, Klaus; Catchpole, Kylie


Defects on perovskite surfaces acting as charge-carrier-traps are a key factor limiting the performance of perovskite solar cells (PSCs). Here we studied the defect passivation effect of three bromide-containing alkylammonium organic cations with increasing alkyl-chain-length: n-butylammonium bromide, n-octylammonium bromide and n-dodecylammonium bromide on a perovskite composition with 1.72 eV bandgap. Long-alkyl-chain organic cations were found to have a greater passivation effect compared to...[Show more]

CollectionsANU Research Publications
Date published: 2021-08-16
Type: Journal article
Source: Journal of Materials Chemistry A
DOI: 10.1039/D1TA05699A
Access Rights: Open Access


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