Preparation of carbon quantum dots with tunable photoluminescence by rapid laser passivation in ordinary organic solvents |
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| Authors: | Li Xiangyou Wang Hongqiang Shimizu Yoshiki Pyatenko Alexander Kawaguchi Kenji Koshizaki Naoto |
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| Institution: | National Institute of Advanced Industrial Science and Technology, Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan. |
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| Abstract: | A simple approach to prepare carbon quantum dots is presented in this communication by laser rapid passivation of nano carbon particles in ordinary organic solvent. The as-prepared carbon dots exhibited visible, tunable and stable photoluminescence (PL). XPS analysis showed that the increased oxygen concentration might be concerned with the origin of PL. |
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