期刊
SURFACE SCIENCE
卷 601, 期 18, 页码 3866-3870出版社
ELSEVIER
DOI: 10.1016/j.susc.2007.04.150
关键词
photoluminescence; nanodiamond; size-dependent photoluminescence
The intrinsic defects- and impurities-originated photoluminescence from nanodiamond particles of various sizes (5-500 nm) were observed. Luminescence spanning from 500 nm to 800 nm can be excited with 488 nm and 532 nm wavelengths lasers without any high-energy treatment to create the defects/impurities. The luminescence is found to be particle-size and laser-wavelength dependent, suggesting different kinds of defects/impurities predominantly sustain the luminescence from nanodiamonds of different sizes. (C) 2007 Elsevier B.V. All rights reserved.
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