UV-blue photoluminescence from close-packed SiC nanocrystal film

被引：20

作者：

Fan, J. Y. ^{[1
,2
]}

Li, H. X. ^{[3
,4
]}

Wang, Q. J. ^{[4
]}

Dai, D. J. ^{[1
]}

Chu, P. K. ^{[2
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 211189, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon, Hong Kong, Peoples R China

[3] Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Peoples R China

[4] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 08期

基金：

中国国家自然科学基金;

关键词：

CHEMICAL-VAPOR-DEPOSITION; SILICON-CARBIDE; OPTICAL CHARACTERIZATION; 3C-SIC NANOCRYSTALS; POROUS SILICON; LUMINESCENCE; NANOSTRUCTURES; FABRICATION;

D O I：

10.1063/1.3556657

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We observed stable photoluminescence from close-packed cubic SiC nanocrystals that are self-assembled into thin solid film. The peak wavelength shifts from blue to near UV with increasing excitation energy and follows well the quantum-confinement effect. The photoluminescence excitation spectrum indicates a 3.47 eV bandgap corresponding to a particle size of 2.3 nm. The nanocrystal film shows triple-exponential photoluminescence decay with lifetimes of 2.3, 8.5, and 36.9 ns. The results open the possibility of the solid state UV-blue light emitting by use of the SiC nanocrystals in photonics and photonics/electronics integration. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3556657]

引用

页数：3

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