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W. F. Zhang, H. Zhu, S. F. Yu and H. Y. Yang Observation of Lasing Emission from Carbon Nanodots in Organic Solvents Advanced Materials 24

Version of Record online: 27 MAR 2012 | DOI: 10.1002/adma.201104950

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Lasing is observed from carbon nanodots (C-dots) dispersed into a layer of poly(ethylene glycol) coated on the surface of optical fibers under 266 nm optical excitation. This is due to the enhancement of photoluminescence intensity via the esterification of carboxylic groups of the C-dots, and the formation of high-Q cylindrical microcavities to support second-type whispering gallery modes.

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