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Perovskite Microdisk Microlasers Self‐Assembled from Solution
Author(s) -
Liao Qing,
Hu Ke,
Zhang Haihua,
Wang Xuedong,
Yao Jiannian,
Fu Hongbing
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201500449
Subject(s) - lasing threshold , materials science , whispering gallery wave , optoelectronics , perovskite (structure) , wavelength , self assembly , laser , optics , nanotechnology , resonator , chemical engineering , physics , engineering
Single‐crystalline square microdisks of CH 3 NH 3 PbBr 3 are prepared by using a one‐step solution self‐assembly method. Single‐mode lasing at 557 nm is achieved based on a built‐in whispering gallery mode microresonator at room temperature. By partial replacement of Br with Cl, lasing wavelengths are continuously tuned from 525 to 557 nm.