Facet-selective growth of halide perovskite/2D semiconductor van der Waals heterostructures for improved optical gain and lasing

Liqiang Zhang, Yiliu Wang, Anshi Chu, Zhengwei Zhang, Miaomiao Liu, Xiaohua Shen, Bailing Li, Xu Li, Chen Yi, Rong Song, Yingying Liu, Xiujuan Zhuang and Xidong Duan ()
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Liqiang Zhang: Hunan University
Yiliu Wang: Hunan University
Anshi Chu: Hunan University
Zhengwei Zhang: Central South University
Miaomiao Liu: Hunan University
Xiaohua Shen: Hunan University
Bailing Li: Hunan University
Xu Li: Hunan University
Chen Yi: Hunan University
Rong Song: Hunan University
Yingying Liu: Hunan University
Xiujuan Zhuang: Hunan University
Xidong Duan: Hunan University

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract The tunable properties of halide perovskite/two dimensional (2D) semiconductor mixed-dimensional van der Waals heterostructures offer high flexibility for innovating optoelectronic and photonic devices. However, the general and robust growth of high-quality monocrystalline halide perovskite/2D semiconductor heterostructures with attractive optical properties has remained challenging. Here, we demonstrate a universal van der Waals heteroepitaxy strategy to synthesize a library of facet-specific single-crystalline halide perovskite/2D semiconductor (multi)heterostructures. The obtained heterostructures can be broadly tailored by selecting the coupling layer of interest, and can include perovskites varying from all-inorganic to organic-inorganic hybrid counterparts, individual transition metal dichalcogenides or 2D heterojunctions. The CsPbI2Br/WSe2 heterostructures demonstrate ultrahigh optical gain coefficient, reduced gain threshold and prolonged gain lifetime, which are attributed to the reduced energetic disorder. Accordingly, the self-organized halide perovskite/2D semiconductor heterostructure lasers show highly reproducible single-mode lasing with largely reduced lasing threshold and improved stability. Our findings provide a high-quality and versatile material platform for probing unique optoelectronic and photonic physics and developing further electrically driven on-chip lasers, nanophotonic devices and electronic-photonic integrated systems.

Date: 2024
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DOI: 10.1038/s41467-024-49364-0

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