激光阈值
异质结
材料科学
光电子学
半导体
钙钛矿(结构)
光子学
卤化物
范德瓦尔斯力
面(心理学)
半导体激光器理论
纳米技术
化学
结晶学
社会心理学
五大性格特征
分子
心理学
有机化学
无机化学
人格
波长
作者
Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang,Yiliu Wang
标识
DOI:10.1038/s41467-024-49364-0
摘要
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 CsPbI 2 Br/WSe 2 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.
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