期刊
CARBON
卷 62, 期 -, 页码 374-381出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2013.06.019
关键词
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资金
- National Natural Science Foundation of China [51072054, 51132004, 51102209]
- National Basic Research Program of China [2011CB808100]
- Grants-in-Aid for Scientific Research [24655171, 23246121] Funding Source: KAKEN
We report on a simple method for fabricating ultra-small nanodiamonds (NDs) with size tunability and uniformity by femtosecond laser ablation in solution. photoluminescence (PL) is tailored in a broad range from ultra-violet (UV) to red region through adjusting the carbon sources or solutions. The NDs also emit multiphoton luminescence. Comprehensive discussions based on the anomalous PL behavior and well-defined absorption and excitation peaks suggest that UV emission originates from radiative recombination through intrinsic direct transitions between highly localized pi states and blue or green emission originates from radiative recombination through defect energy trapping states. (C) 2013 Elsevier Ltd. All rights reserved.
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