发光学报2026，Vol.47Issue(3)：377-385,9.DOI:10.37188/CJL.20250269
绿色溶剂工程调控相分布实现低阈值准二维钙钛矿激光器
Phase Distribution Management via Green Solvent Engineering for Low-threshold Quasi-2D Perovskite Lasers
摘要
Abstract
Quasi-two-dimensional(quasi-2d)perovskites are promising gain media for micro-nano lasers,yet their uncontrolled crystallization and abundant low-n phases often hinder optical gain and device performance.In this work,we introduce ethyl acetate(EA)as a green antisolvent to fabricate high-quality quasi-2D PEA0.4MAPbBr3 films.The EA-treated films exhibit superior morphology,enhanced crystallinity,and notably inhibited low n-phas-es.These improvements yield a prolonged photoluminescence lifetime of 26.3 ns and a substantially extended gain lifetime of 129 ps.Consequently,the optimized film exhibits a markedly reduced amplified spontaneous emission(ASE)threshold of 5.6 μJ·cm-2 and a high net modal gain of 935 cm-1.Leveraging these enhanced gain properties,we successfully demonstrate a vertical-cavity surface-emitting laser(VCSEL)based on a dielectric Bragg reflector microcavity,which delivers single-mode lasing at 528.3 nm and a high quality factor of～5 886.This work presents a green-solvent-engineering strategy for high-performance perovskite lasers,advancing their prospects for scalable pho-tonic integration.关键词
准二维钙钛矿/绿色反溶剂/增益特性/钙钛矿激光Key words
quasi-2D perovskite/green antisolvent/gain properties/perovskite lasers分类
信息技术与安全科学引用本文复制引用
魏国强,占子俊,蔡爽,周鸿志,刘征征,胡智萍,杜鹃..绿色溶剂工程调控相分布实现低阈值准二维钙钛矿激光器[J].发光学报,2026,47(3):377-385,9.基金项目
国家自然科学基金(62425502,62375060,62205081,62405073,52272013) （62425502,62375060,62205081,62405073,52272013）
浙江省"领雁"研发攻关计划(2024C01192) （2024C01192）
浙江省自然科学基金(LMS25F050001)Supported by National Natural Science Foundation of China(62425502,62375060,62205081,62405073,52272013) （LMS25F050001）
the"Pioneer"and"Leading Goose"R&D Program of Zhejiang(2024C01192) （2024C01192）
Zhejiang Provincial Natural Science Foundation(LMS25F050001) （LMS25F050001）
