Tailoring electric dipole of hole-transporting material p-dopants for perovskite solar cells

Xia, Jianxing; Zhang, Yi; Xiao, Chuanxiao; Brooks, Keith Gregory; Chen, Min; Luo, Junsheng; Yang, Hua; Klipfel, Nadja Isabelle Desiree; Zou, Jihua; Shi, Yu; Yao, Xiaojun; Chen, Jiangzhao; Luther, Joseph M.; Lin, Hongzhen; Asiri, Abdullah M.; Jia, Chunyang; Nazeeruddin, Mohammad Khaja

doi:10.1016/j.joule.2022.05.012

Tailoring electric dipole of hole-transporting material p-dopants for perovskite solar cells

Journal Article · Tue Jun 14 00:00:00 EDT 2022 · Joule

DOI:https://doi.org/10.1016/j.joule.2022.05.012· OSTI ID:1882196

Xia, Jianxing ^[1]; Zhang, Yi ^[2]; Xiao, Chuanxiao ^[3]; Brooks, Keith Gregory ^[2]; Chen, Min ^[3]; Luo, Junsheng ^[4]; Yang, Hua ^[5]; Klipfel, Nadja Isabelle Desiree ^[2]; Zou, Jihua ^[4]; Shi, Yu ^[4]; Yao, Xiaojun ^[6]; Chen, Jiangzhao ^[7]; ^[3]; Lin, Hongzhen ^[8]; Asiri, Abdullah M. ^[9]; Jia, Chunyang ^[4]; Nazeeruddin, Mohammad Khaja ^[10]

University of Electronic Science and Technology of China, Chengdu (China); Ecole Polytechnique Federale Lausanne (EPFL Switzerland)
Ecole Polytechnique Federale Lausanne (EPFL Switzerland)
National Renewable Energy Lab. (NREL), Golden, CO (United States)
University of Electronic Science and Technology of China, Chengdu (China)
Chinese Academy of Sciences (CAS), Beijing (China)
Lanzhou University (China)
Chongqing University (China)
Chinese Academy of Sciences (CAS), Suzhou (China)
King Abdulaziz University, Jeddah (Saudi Arabia)
Ecole Polytechnique Federale Lausanne (EPFL Switzerland); City University of Hong Kong, Kowloon (Hong Kong)

We report Li-TFSI/t-BP are the most widely employed p-dopants for hole-transporting materials (HTMs) within the state-of-the-art perovskite solar cells (PSCs). The hygroscopicity and migration of these dopants, however, lead to devices with limited stability. To solve this problem, we report here on a diphenyl iodide cation and pentafluorophenyl boric acid anion-based dopant (DIC-PBA) with an oriented interfacial dipole moment as an alternative to Li-TFSI/t-BP. Theoretical and experimental data reveal that DIC-PBA exhibits deep doping of poly[bis(4-phenyl)(2,4,6-triMethylphenyl)aMine] (PTAA) and also creates p-doping of perovskite surface, which originates from ionic interactions-derived dipole arrangement that yields fast interfacial charge transport. The improved intrinsic stability of PSCs originates from the inhibition of dipole moment degeneration on the perovskite surface. Devices prepared with DIC-PBA yielded high efficiency of 22.86%, and the modules (aperture area: 33.2 cm²) efficiency reached 19.13%. Importantly, the storage stability also significantly improved exceeding to 90% after aging 1,200 h under air ambient.

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office; National Natural Science Foundation of China; Central Universities of China; National Key Research and Development Program of China; Sichuan Science and Technology Program; National Priorities Research Program (NPRP)

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1882196

Report Number(s):: NREL/JA-5900-83392; MainId:84165; UUID:cd534371-00c4-4b40-9452-cdf5c00f812c; MainAdminID:65115

Journal Information:: Joule, Journal Name: Joule Journal Issue: 7 Vol. 6; ISSN 2542-4351

Publisher:: Elsevier - Cell PressCopyright Statement

Country of Publication:: United States

Language:: English

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