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

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

doi:10.1038/s41566-024-01542-8

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

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%. 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.

Original language	English (US)
Article number	1400532
Pages (from-to)	28-35
Number of pages	8
Journal	Nature Photonics
Volume	19
Issue number	1
DOIs	https://doi.org/10.1038/s41566-024-01542-8
State	Accepted/In press - 2024

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

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10.1038/s41566-024-01542-8

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Zhu, H., Shao, B., Shen, Z., You, S., Yin, J., Wehbe, N., Wang, L., Song, X., Abulikemu, M., Basaheeh, A., Jamal, A., Gereige, I., Freitag, M., Mohammed, O. F., Zhu, K., & Bakr, O. M. (Accepted/In press). In situ energetics modulation enables high-efficiency and stable inverted perovskite solar cells. Nature Photonics, 19(1), 28-35. Article 1400532. https://doi.org/10.1038/s41566-024-01542-8

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title = "In situ energetics modulation enables high-efficiency and stable inverted perovskite solar cells",

abstract = "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%. 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.",

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

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T1 - In situ energetics modulation enables high-efficiency and stable inverted perovskite solar cells

AU - Zhu, Hongwei

AU - Shao, Bingyao

AU - Shen, Zhongjin

AU - You, Shuai

AU - Yin, Jun

AU - Wehbe, Nimer

AU - Wang, Lijie

AU - Song, Xin

AU - Abulikemu, Mutalifu

AU - Basaheeh, Ali

AU - Jamal, Aqil

AU - Gereige, Issam

AU - Freitag, Marina

AU - Mohammed, Omar F.

AU - Zhu, Kai

AU - Bakr, Osman M.

PY - 2024

Y1 - 2024

N2 - 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%. 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.

AB - 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%. 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.

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

Abstract

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