期刊
ADVANCED OPTICAL MATERIALS
卷 8, 期 24, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.202001347
关键词
active waveguides; chemical vapor deposition; energy transfer; microlasers; perovskite heterostructures
资金
- Natural Science Foundation of Jiangsu Province [BK20190446]
- NSFC [11904172]
- Nanjing University of Science and Technology
Semiconductor heterostructures hold the promise for developing novel integrated devices with on-demand photonic and optoelectronic properties. Herein, the perovskite lateral heterostructures in forms of microplates and microwires are fabricated by precise control of two-step atmospheric pressure chemical vapor deposition course and the unique optical properties are demonstrated for the first time. The comprehensive spectroscopic and elemental mapping characterizations reveal the core-shell-like configuration of the individual heterostructure, which features the fascinating energy routing nature. Taking advantage of the effective photon recycling and the energy transfer processes, the record-low threshold (approximate to 3.5 mu J cm(-2)) lasing and the indirect pumping induced lasers from the single micro-heterostructure are demonstrated. Moreover, the distinctive optical waveguides with propagation length independent output spectra from the microwire heterostructure are realized. These findings represent a significant advance in developing novel and functional optoelectronic devices by engineering the perovskite heterostructure.
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