Light-Matter Interactions in Cesium Lead Halide Perovskite Nanowire Lasers

被引：208

作者：

Park, Kidong ^{[1
]}

Lee, Jong Woon ^{[2
]}

Kim, Jun Dong ^{[1
]}

Han, Noh Soo ^{[2
]}

Jang, Dong Myung ^{[1
]}

Jeong, Seonghyun ^{[2
]}

Park, Jeunghee ^{[1
]}

Song, Jae Kyu ^{[2
]}

机构：

[1] Korea Univ, Dept Chem, Jochiwon 339700, South Korea

[2] Kyung Hee Univ, Dept Chem, Seoul 130701, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2016年 / 7卷 / 18期

关键词：

ZNO NANOWIRE; QUANTUM DOTS; PHASE SYNTHESIS; WAVE-GUIDES; NANOCRYSTALS; EMISSION; ELECTRON; ABSORPTION; CH3NH3PBI3; CSPBX3;

D O I：

10.1021/acs.jpclett.6b01821

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Light matter interactions in inorganic perovskite nanolasers are investigated using single -crystalline cesium lead halide (CsPbX3, X = Cl, Br, and I) nanowires synthesized by the chemical vapor transport method. The perovskite nanowires exhibit a uniform growth direction, smooth surfaces, straight end facets, and homogeneous composition distributions. Lasing occurs in the perovskite nanowires at low thresholds (3 mu J/cm(2)) with high quality factors (Q = 1200-1400) under ambient atmospheric environments. The wavelengths of the nanowire lasers are tunable by controlling the stoichiometry of the halide, allowing the lasing of the inorganic perovskite nanowires from blue to red. The unusual spacing of the Fabry-Perot modes suggests strong light matter interactions in the reduced mode volume of the nanowires, while the polarization of the lasing indicates that the Fabry-Perot modes belong to the same fundamental transverse mode. The dispersion curve of the exciton polariton model suggests that the group refractive index of the polariton is significantly enhanced.

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页码：3703 / 3710

页数：8

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