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Perovskite Microdisk Microlasers Self‐Assembled from Solution

2015; Volume: 27; Issue: 22 Linguagem: Inglês

10.1002/adma.201500449

1521-4095

Qing Liao, Ke Hu, Haihua Zhang, Xuedong Wang, Jiannian Yao, Hongbing Fu,

Photorefractive and Nonlinear Optics

Single-crystalline square microdisks of CH3NH3PbBr3 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.