外文题目: Robust Cesium Lead Halide Perovskite Microcubes for Frequency Upconversion Lasing
作者: Hu, Zhiping; Liu, Zhengzheng; Bian, Yao; Liu, Dongjue; Tang, Xiaosheng; Hu, Wei; Zang, Zhigang; Zhou, Miao; Sun, Lidong; Tang, Jianxin; Li, Yanqing; Du, Juan; Leng, Yuxin
刊名: Adv. Opt. Mater.
年: 2017 卷: 5 期: 22 文章编号：1700419
英文关键词:
amplified spontaneous emission; lasers; microcubes; perovskites
LIGHT-EMITTING-DIODES; SINGLE-PHOTON EMISSION; QUANTUM DOTS; SOLAR-CELLS; STIMULATED-EMISSION; NANOWIRE LASERS; NANOCRYSTALS; CSPBX3; ABSORPTION; CSPBBR3
英文摘要:
Halide perovskite nanomaterials have recently attracted a lot of attention in the nanoscale laser research field, especially two-photon pumped lasing in halide perovskite nanomaterials has been considered as an ideal alternative strategy to achieve frequency upconversion. However, the poor stability of current organic-inorganic lead halide perovskite materials hinder their further practical applications. Herein, facile solution-processed cesium lead halide perovskite CsPbX3 (X = Br, I, or Cl) microcubes with low-threshold lasing, high quality, enhanced stability, and excellent wavelength tunability are reported. These as-prepared CsPbX3 microcubes display excellent structure stability under ambient conditions for several months and they are found to be more robust than their organic-inorganic counterparts. The smooth end facets and wavelength-comparable dimensions make these microcubes promising for high-quality laser cavities in three dimensions. Fabry-Perot lasing is demonstrated in CsPbX3 microcubes, the process of which is investigated by dynamic emission. In addition, tunable amplified spontaneous emission is achieved with low threshold under both one- and two-photon excitation, which can maintain a stable emission for over 10 hours under continuous intense laser shots in ambient atmosphere. The findings suggest that solution-processed all-inorganic perovskite microcubes can be used as excellent gain medium for frequency upconversion lasers, which would offer a new platform for nonlinear photoelectric devices.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1002/adom.201700419


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