Ultrafast Photoexcitation Induced Nonthermal Lattice Expansion in 2D Perovskite.

Xiangyu Chen, Jiakang Zhou, Yunfan Yue, Zhongle Zeng, Xuewen Wang

Abstract read

In one paragraph

Article in Advanced science (Weinheim, Baden-Wurttemberg, Germany), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 · What the graph read from it

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3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

Ultrafast Photoexcitation Induced Nonthermal Lattice Expansion in 2D Perovskite.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
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5 · Who and what money

Authors and funding

5 authors.

Xiangyu ChenCenter of Femtosecond Laser Manufacturing for Advanced Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China.

Jiakang ZhouCenter of Femtosecond Laser Manufacturing for Advanced Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China.

Yunfan YueCenter of Femtosecond Laser Manufacturing for Advanced Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China.

Zhongle ZengCenter of Femtosecond Laser Manufacturing for Advanced Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China.

Xuewen WangCenter of Femtosecond Laser Manufacturing for Advanced Materials and Devices, State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China.ORCID https://orcid.org/0000-0003-3751-0306

Funding

Guangdong Basic and Applied Basic Research Foundation 2021B1515120041Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City 2021JJLH0058National Key Research and Development Program of China 2020YFA0715000

6 · The paper itself

Abstract

Light-induced lattice change of perovskites is found to be critical for device performance. However, the underlying mechanism is still not fully understood. Here, real-time time-dependent density functional theory (rt-TDDFT) calculations along with experiments are utilized to discern the photo-induced electronic and structural changes in 2D Dion-Jacobson (DJ) perovskites, showing that photoexcitation drives the non-thermal lattice expansion, leading to the increase in bandgap. The ultrafast photoexcitation effect is found to improve the film crystallinity and charge transport, which brings a longer carrier lifetime and slower carrier recombination rate, leading to remarkable improvement of photovoltaic performance. These results not only provide insights into the photo-physics of perovskites, but also show the potential of a new passivation technique for perovskite optoelectronics via ultrafast photoexcitation.

Indexed as

2D perovskitelattice expansionpassivationultrafast photoexcitation

Identifiers

PMID41117147

DOI10.1002/advs.202510954

PMCPMC12786345

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