TY - JOUR
T1 - Room-Temperature Red–Green–Blue Whispering-Gallery Mode Lasing and White-Light Emission from Cesium Lead Halide Perovskite (CsPbX3, X = Cl, Br, I) Microstructures
AU - Guo, Pengfei
AU - Hossain, Mohammad Kamal
AU - Shen, Xia
AU - Sun, Haibin
AU - Yang, Wenchao
AU - Liu, Chaoping
AU - Ho, Chun Yuen
AU - Kwok, Cheuk Kai
AU - Tsang, Sai Wing
AU - Luo, Yongsong
AU - Ho, Johnny C.
AU - Yu, Kin Man
N1 - Funding Information:
The authors thank Professor Wallace C. H. Choy (The University of Hong Kong) for access to his laboratory to perform time-resolved spectral characterization of the microstructures. This work was financially supported by CityU SGP (Grant No. 9380076), the National Natural Science Foundation of China (Grant Nos. 51602276, 51672229, 61574122, and 11604280), the Hong Kong Scholars Program (Grant No. XJ2015013), the General Research Fund of the Research Grants Council of Hong Kong SAR, China (CityU 11275916), the Nan Hu Young Scholar Supporting Program of XYNU, Key research program in the University of Henan Province (Grant No. 17A140028), and the Science and Technology Project of Henan Province (Grant No. 172102210458).
Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/2/5
Y1 - 2018/2/5
N2 - Wavelength-tunable nano/microlasers are essential components for various highly integrated and multifunctional photonic devices. Based on the different band gap/composition of inorganic cesium lead halide perovskite materials, broad band light absorption and emission devices can be achieved. Herein, a vapor–liquid–solid route for growing cesium lead halide perovskite (CsPbX3, X = Cl, Br, I) microcrystal structures is demonstrated. These square-shaped microstructures exhibit strong blue, green, and red photoluminescence, indicating that their band gaps can be engineered to cover the entire visible range. Optically pumped red–green–blue whispering-gallery mode lasers based on the controlled composition of these microcrystals are successfully realized at room temperature. Moreover, rationally designed white-light-emitting chips with high brightness are fabricated utilizing these metal halide perovskite microstructures grown on sapphire. All these results evidently suggest a feasible route to the design of red–green–blue lasers and white-light emitters for potential applications in full-color displays as well as photonic devices.
AB - Wavelength-tunable nano/microlasers are essential components for various highly integrated and multifunctional photonic devices. Based on the different band gap/composition of inorganic cesium lead halide perovskite materials, broad band light absorption and emission devices can be achieved. Herein, a vapor–liquid–solid route for growing cesium lead halide perovskite (CsPbX3, X = Cl, Br, I) microcrystal structures is demonstrated. These square-shaped microstructures exhibit strong blue, green, and red photoluminescence, indicating that their band gaps can be engineered to cover the entire visible range. Optically pumped red–green–blue whispering-gallery mode lasers based on the controlled composition of these microcrystals are successfully realized at room temperature. Moreover, rationally designed white-light-emitting chips with high brightness are fabricated utilizing these metal halide perovskite microstructures grown on sapphire. All these results evidently suggest a feasible route to the design of red–green–blue lasers and white-light emitters for potential applications in full-color displays as well as photonic devices.
UR - http://www.scopus.com/inward/record.url?scp=85041464633&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85041464633&partnerID=8YFLogxK
U2 - 10.1002/adom.201700993
DO - 10.1002/adom.201700993
M3 - Article
AN - SCOPUS:85041464633
SN - 2195-1071
VL - 6
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 3
M1 - 1700993
ER -