Strong-Bonding Hole-Transport Layers Reduce Ultraviolet Degradation of Perovskite Solar Cells

Fei, Chengbin; Kuvayskaya, Anastasia; Shi, Xiaoqiang; Wang, Mengru; Shi, Zhifang; Jiao, Haoyang; Silverman, Timothy J.; Owen-Bellini, Michael; Dong, Yifan; Xian, Yeming; Scheidt, Rebecca; Wang, Xiaoming; Yang, Guang; Gu, Hangyu; Li, Nengxu; Dolan, Connor J.; Deng, Zhewen J. D.; Cakan, Deniz N.; Fenning, David P.; Yan, Yanfa; Beard, Matthew C.; Schelhas, Laura T.; Sellinger, Alan; Huang, Jinsong

doi:10.1126/science.adi4531

Strong-Bonding Hole-Transport Layers Reduce Ultraviolet Degradation of Perovskite Solar Cells

Journal Article · Thu Jun 06 00:00:00 EDT 2024 · Science

DOI:https://doi.org/10.1126/science.adi4531· OSTI ID:2376851

Fei, Chengbin; Kuvayskaya, Anastasia; Shi, Xiaoqiang; Wang, Mengru; Shi, Zhifang; Jiao, Haoyang; ; Owen-Bellini, Michael; Dong, Yifan; Xian, Yeming; Scheidt, Rebecca; Wang, Xiaoming; Yang, Guang; Gu, Hangyu; Li, Nengxu; Dolan, Connor J.; Deng, Zhewen J. D.; Cakan, Deniz N.; Fenning, David P.; Yan, Yanfa more »

The light-emitting diodes (LEDs) used in indoor testing of perovskite solar cells do not expose them to the levels of ultraviolet (UV) radiation that they would receive in actual outdoor use. We report degradation mechanisms of p-i-n-structured perovskite solar cells under unfiltered sunlight and with LEDs. Weak chemical bonding between perovskites and polymer hole-transporting materials (HTMs) and transparent conducting oxides (TCOs) dominate the accelerated A-site cation migration, rather than direct degradation of HTMs. An aromatic phosphonic acid, [2-(9-ethyl-9H-carbazol-3-yl)ethyl]phosphonic acid (EtCz3EPA), enhanced bonding at the perovskite/HTM/TCO region with a phosphonic acid group bonded to TCOs and a nitrogen group interacting with lead in perovskites. A hybrid HTM of EtCz3EPA with strong hole-extraction polymers retained high efficiency and improved the UV stability of perovskite devices, and a champion perovskite minimodule-independently measured by the Perovskite PV Accelerator for Commercializing Technologies (PACT) center-retained operational efficiency of >16% after 29 weeks of outdoor testing.

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

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 2376851

Alternate ID(s):: OSTI ID: 2406167

Report Number(s):: NREL/JA-5K00-90325; MainId:92103; UUID:3aeed751-813b-4922-974b-558d70044429; MainAdminId:72910

Journal Information:: Science, Journal Name: Science Journal Issue: 6700 Vol. 384; ISSN 0036-8075

Publisher:: AAASCopyright Statement

Country of Publication:: United States

Language:: English

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