In situ energetics modulation enables high-efficiency and stable inverted perovskite solar cells

Zhu, Hongwei; Shao, Bingyao; Shen, Zhongjin; You, Shuai; Yin, Jun; Wehbe, Nimer; Wang, Lijie; Song, Xin; Abulikemu, Mutalifu; Basaheeh, Ali; Jamal, Aqil; Gereige, Issam; Freitag, Marina; Mohammed, Omar F.; Zhu, Kai; Bakr, Osman M.

doi:10.1038/s41566-024-01542-8

In situ energetics modulation enables high-efficiency and stable inverted perovskite solar cells

Journal Article · Wed Oct 02 00:00:00 EDT 2024 · Nature Photonics

DOI:https://doi.org/10.1038/s41566-024-01542-8· OSTI ID:2462706

^[1]; ^[1]; ^[2]; ^[3]; ^[1]; ^[1]; ^[1]; ^[1]; Abulikemu, Mutalifu ^[1]; Basaheeh, Ali ^[4]; Jamal, Aqil ^[4]; Gereige, Issam ^[4]; ^[2]; ^[1]; ^[3]; ^[1]

King Abdullah University of Science and Technology (KAUST), Thuwal (Saudi Arabia)
Newcastle University, Newcastle upon Tyne (United Kingdom)
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Saudi Aramco Research and Development Center, Dhahran (Saudi Arabia)

In contrast to conventional (n-i-p) perovskite solar cells (PSCs), inverted (p-i-n) PSCs offer enhanced stability and integrability with tandem solar cell architectures, which have garnered increasing interest. However, p-i-n cells suffer from energy level misalignment with transport layers, imbalanced transport of photo-generated electrons and holes, and significant defects with the perovskite films. Here we introduce tris(2,4,6-trimethyl-3-(pyridin-3-yl)phenyl)borane (3TPYMB), a nonionic n-type molecule that, through hydrogen bonding and Lewis acid-base reactions with perovskite surfaces or grain boundaries, enables in situ modulation of perovskite energetics, effectively mitigating the key challenges of p-i-n PSCs. The p-i-n PSCs incorporating 3TPYMB achieve a certified quasi-steady-state power conversion efficiency of 24.55 +- 0.33%, with a reverse scan efficiency of 25.58%. Finally, they also exhibit exceptional stability, with unencapsulated devices retaining 97.8% of their initial efficiency after 1,800 h of continuous operation at maximum power point under N₂ atmosphere, 1 sun illumination and 60 °C conditions.

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:: 2462706

Report Number(s):: NREL/JA--5900-91089; MainId:92867; UUID:dde069b7-bfbd-46a9-83bb-54592326361a; MainAdminId:73963

Journal Information:: Nature Photonics, Journal Name: Nature Photonics Vol. 19; ISSN 1749-4885

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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In situ energetics modulation enables high-efficiency and stable inverted perovskite solar cells

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