Anisotropic carrier dynamics and laser-fabricated luminescent patterns on oriented single-crystal perovskite wafers

Chao Ge; Yachao Li; Haiying Song; Qiyuan Xie; Leilei Zhang; Xiaoran Ma; Junfeng Liu; Xiangjing Guo; Yinzhou Yan; Danmin Liu; Wenkai Zhang; Shibing Liu; Yang Liu

doi:10.1038/s41467-024-45055-y

Anisotropic carrier dynamics and laser-fabricated luminescent patterns on oriented single-crystal perovskite wafers

Nat Commun. 2024 Jan 30;15(1):914. doi: 10.1038/s41467-024-45055-y.

Authors

Chao Ge^#^{1

2}, Yachao Li^#^{3

4}, Haiying Song⁵, Qiyuan Xie³, Leilei Zhang⁶, Xiaoran Ma³, Junfeng Liu⁷, Xiangjing Guo³, Yinzhou Yan³, Danmin Liu⁷, Wenkai Zhang⁸, Shibing Liu³, Yang Liu⁹

Affiliations

¹ Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, 100124, Beijing, China. gechao@bjut.edu.cn.
² State Key Laboratory of Crystal Materials, Shandong University, 250100, Jinan, China. gechao@bjut.edu.cn.
³ Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, 100124, Beijing, China.
⁴ Department of Physics and Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, Beijing Normal University, 100875, Beijing, China.
⁵ Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, 100124, Beijing, China. hysong@bjut.edu.cn.
⁶ State Key Laboratory of NBC Protection for Civilian, 102205, Beijing, China.
⁷ Key Laboratory of Advanced Functional Materials, College of Materials Science and Engineering, Beijing University of Technology, 100124, Beijing, China.
⁸ Department of Physics and Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, Beijing Normal University, 100875, Beijing, China. wkzhang@bnu.edu.cn.
⁹ State Key Laboratory of Crystal Materials, Shandong University, 250100, Jinan, China. liuyangicm@sdu.edu.cn.

^# Contributed equally.

Abstract

Perovskite materials and their applications in optoelectronics have attracted intensive attentions in recent years. However, in-depth understanding about their anisotropic behavior in ultrafast carrier dynamics is still lacking. Here we explore the ultrafast dynamical evolution of photo-excited carriers and photoluminescence based on differently-oriented MAPbBr₃ wafers. The distinct in-plane polarization of carrier relaxation dynamics of the (100), (110) and (111) wafers and their out-of-plane anisotropy in a picosecond time scale were found by femtosecond time- and polarization-resolved transient transmission measurements, indicating the relaxation process dominated by optical/acoustic phonon interaction is related to photoinduced transient structure rearrangements. Femtosecond laser two-photon fabricated patterns exhibit three orders of magnitude enhancement of emission due to the formation of tentacle-like microstructures. Such a ultrafast dynamic study carried on differently-oriented crystal wafers is believed to provide a deep insight about the photophysical process of perovskites and to be helpful for developing polarization-sensitive and ultrafast-response optoelectronic devices.

Abstract

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