材料科学
激光阈值
光电子学
钙钛矿(结构)
光子学
激光器
薄膜
纳米光刻
热稳定性
纳米技术
相(物质)
单层
平版印刷术
光学
化学工程
制作
化学
工程类
病理
物理
医学
有机化学
替代医学
波长
作者
Xue-Zhou Wang,Long Jin,А. А. Сергеев,Wei Liu,Songyun Gu,N.Y. Li,Kezhou Fan,Shih‐Chi Chen,Kam Sing Wong,Xiankai Sun,Ni Zhao
出处
期刊:Science Advances
[American Association for the Advancement of Science (AAAS)]
日期:2023-10-27
卷期号:9 (43)
标识
DOI:10.1126/sciadv.adj3476
摘要
Metal halide perovskites have shown outstanding optoelectronic and nonlinear optical properties; yet, to realize wafer-scale high-performance perovskite-integrated photonics, the materials also need to have excellent ambient stability and compatibility with nanofabrication processes. In this work, we introduce Dion-Jacobson (D-J) phase perovskites for photonic device applications. By combining self-assembled monolayer-assisted film growth with thermal pressing, we obtain a series of compact and extremely smooth D-J phase perovskite thin films that exhibit excellent stability during electron-beam lithography, solvent development, and rinse. Combining spectroscopic and morphological characterizations, we further demonstrate how organic spacers can be used to fine-tune the photophysical properties and processability of the perovskite films. The distributed-feedback lasers based on the D-J phase perovskites exhibit a low lasing threshold (5.5 μJ cm −2 pumped with nanosecond laser), record high Q factor (up to 30,000), and excellent stability, with an unencapsulated device demonstrating a T 90 beyond 60 hours in ambient conditions (50% relative humidity).
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