A strategy is developed to modulate the fluorescent color of carbon nanodots (CNDs) through regulating photon reabsorption and carbonization degree. On the one hand, the emission color is tuned through enhancing the photon reabsorption via the concentration increase. Essentially, the emitted photon of short wavelengths is supposed to be reabsorbed by a neighboring CND, subsequently resulting in a photon emission of long wavelengths. On the other hand, by reaction time control, a higher carbonization degree of CNDs is obtained, which renders larger sizes and less oxygen related groups of CNDs, giving rise to narrower bandgaps, e.g., emissions of longer wavelengths. Through cooperatively managing the carbonization degree and photon reabsorption, a single ultraviolet light can be converted into multi-color luminescence across the entire visible range by using our one-pot-pyrolysis CNDs.
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11 December 2017
Research Article|
December 11 2017
Modulating the fluorescent color of carbon nanodots via photon reabsorption and carbonization degree
Zhixing Gan
;
1
Key Laboratory of Optoelectronic Technology of Jiangsu Province, School of Physics and Technology, Nanjing Normal University
, Nanjing 210023, China
2
National Laboratory of Solid State Microstructures, Nanjing University
, Nanjing 210093, China
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Yunsong Di;
Yunsong Di
1
Key Laboratory of Optoelectronic Technology of Jiangsu Province, School of Physics and Technology, Nanjing Normal University
, Nanjing 210023, China
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Shisong Huang;
Shisong Huang
1
Key Laboratory of Optoelectronic Technology of Jiangsu Province, School of Physics and Technology, Nanjing Normal University
, Nanjing 210023, China
2
National Laboratory of Solid State Microstructures, Nanjing University
, Nanjing 210093, China
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Jiancang Shen;
Jiancang Shen
2
National Laboratory of Solid State Microstructures, Nanjing University
, Nanjing 210093, China
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Lun Yang;
Lun Yang
3
Institute for Advanced Materials and School of Physics and Electronic Science, Hubei Normal University
, Huangshi 435002, China
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Xiaowei Zhang
Xiaowei Zhang
2
National Laboratory of Solid State Microstructures, Nanjing University
, Nanjing 210093, China
4
Department of Electrical Engineering and Computer Science, Ningbo University
, Ningbo 315211, China
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a)
Author to whom correspondence should be addressed: zxgan@njnu.edu.cn
Appl. Phys. Lett. 111, 241903 (2017)
Article history
Received:
October 06 2017
Accepted:
November 24 2017
Citation
Zhixing Gan, Yunsong Di, Shisong Huang, Jiancang Shen, Lun Yang, Xiaowei Zhang; Modulating the fluorescent color of carbon nanodots via photon reabsorption and carbonization degree. Appl. Phys. Lett. 11 December 2017; 111 (24): 241903. https://doi.org/10.1063/1.5008454
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