外文题目: Single-Mode Lasers Based on Cesium Lead Halide Perovskite Submicron Spheres
作者: Tang, Bing; Dong, Hongxing; Sun, Liaoxin; Zheng, Weihao; Wang, Qi; Sun, Fangfang; Jiang, Xiongwei; Pan, Anlian; Zhang, Long
刊名: ACS Nano
年: 2017 卷: 11 期: 11 页： 10681--10688
英文关键词:
single-mode laser; cesium lead halide; whispering gallery mode; microsphere; wavelength tunable
NANOWIRE LASERS; ROOM-TEMPERATURE; QUANTUM DOTS; MICROCAVITIES; CAVITY; GROWTH; MICROSPHERES; MICROLASERS; NANOLASERS; MICRODISKS
英文摘要:
Single-mode laser is realized in a cesium lead halide perovskite submicron sphere at room temperature. All-inorganic cesium lead, halide (CsPbX3, X = Cl, Br, I) microspheres with tunable sizes (0.2-10 mu m) are first fabricated by a dual-source chemical vapor deposition method. Due to smooth surface and regular geometry structure of microspheres, whispering gallery resonant modes make a single-mode laser realized in a submicron sphere. Surprisingly, a single-mode laser with a very narrow line width (similar to 0.09 nm) was achieved successfully in the CsPbX3 spherical cavity at low threshold (similar to 0.42 mu J cm(-2)) with a high cavity quality factor (similar to 6100), which are the best specifications of lasing modes in all natural nano/microcavities ever reported. By modulating the halide composition and sizes of the microspheres, the wavelength of a single-mode laser can be continuously tuned from red to violet (425-715 nm). This work illustrates that the well-controlled synthesis of metal cesium lead halide perovskite nano/microspheres may offer an alternative route to produce a widely tunable and greatly miniaturized single -mode laser.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1021/acsnano.7b04496


全文传递服务