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Title: Optimal nitrogen and phosphorus codoping carbon dots towards white light-emitting device

Abstract

Through a one-step fast microwave-assisted approach, nitrogen and phosphorus co-doped carbon dots (N,P-CDs) were synthesized using ammonium citrate (AC) as a carbon source and phosphates as additive reagent. Under the condition of an optimal reaction time of 140 s, the influence of additive with different N and P content on fluorescent performance of N,P-CDs was further explored. It was concluded that high nitrogen content and moderate phosphorus content are necessary for obtaining high quantum yield (QY) N,P-CDs, among which the TAP-CDs (CDs synthesized using ammonium phosphate as additive reagent) show high quantum yield (QY) of 62% and red-green-blue (RGB) spectral composition of 51.67%. Besides, the TAP-CDs exhibit satisfying thermal stability within 180 °C. By virtue of good optical and thermal properties of TAP-CDs, a white light-emitting device (LED) was fabricated by combining ultraviolet chip with TAP-CDs as phosphor. The white LED emits bright warm-white light with the CIE chromaticity coordinate of (0.38, 0.35) and the corresponding color temperature (CCT) of 4450 K, indicating the potential of TAP-CDs phosphor in white LED.

Authors:
; ; ;  [1];  [2]; ;  [1];  [2]
  1. Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Ministry of Education, Taiyuan 030024 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22590531
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ADDITIVES; AMMONIUM PHOSPHATES; CARBON SOURCES; COLOR; DOPED MATERIALS; EQUIPMENT; FLUORESCENCE; LIGHT EMITTING DIODES; MICROWAVE RADIATION; PHOSPHORUS; THERMODYNAMIC PROPERTIES; ULTRAVIOLET RADIATION

Citation Formats

Zhang, Feng, Wang, Yaling, Miao, Yanqin, Yang, Yongzhen, E-mail: yyztyut@126.com, E-mail: liuxuguang@tyut.edu.cn, Research Center on Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, He, Yuheng, Liu, Xuguang, E-mail: yyztyut@126.com, E-mail: liuxuguang@tyut.edu.cn, and College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024. Optimal nitrogen and phosphorus codoping carbon dots towards white light-emitting device. United States: N. p., 2016. Web. doi:10.1063/1.4961631.
Zhang, Feng, Wang, Yaling, Miao, Yanqin, Yang, Yongzhen, E-mail: yyztyut@126.com, E-mail: liuxuguang@tyut.edu.cn, Research Center on Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, He, Yuheng, Liu, Xuguang, E-mail: yyztyut@126.com, E-mail: liuxuguang@tyut.edu.cn, & College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024. Optimal nitrogen and phosphorus codoping carbon dots towards white light-emitting device. United States. doi:10.1063/1.4961631.
Zhang, Feng, Wang, Yaling, Miao, Yanqin, Yang, Yongzhen, E-mail: yyztyut@126.com, E-mail: liuxuguang@tyut.edu.cn, Research Center on Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024, He, Yuheng, Liu, Xuguang, E-mail: yyztyut@126.com, E-mail: liuxuguang@tyut.edu.cn, and College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024. 2016. "Optimal nitrogen and phosphorus codoping carbon dots towards white light-emitting device". United States. doi:10.1063/1.4961631.
@article{osti_22590531,
title = {Optimal nitrogen and phosphorus codoping carbon dots towards white light-emitting device},
author = {Zhang, Feng and Wang, Yaling and Miao, Yanqin and Yang, Yongzhen, E-mail: yyztyut@126.com, E-mail: liuxuguang@tyut.edu.cn and Research Center on Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan 030024 and He, Yuheng and Liu, Xuguang, E-mail: yyztyut@126.com, E-mail: liuxuguang@tyut.edu.cn and College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024},
abstractNote = {Through a one-step fast microwave-assisted approach, nitrogen and phosphorus co-doped carbon dots (N,P-CDs) were synthesized using ammonium citrate (AC) as a carbon source and phosphates as additive reagent. Under the condition of an optimal reaction time of 140 s, the influence of additive with different N and P content on fluorescent performance of N,P-CDs was further explored. It was concluded that high nitrogen content and moderate phosphorus content are necessary for obtaining high quantum yield (QY) N,P-CDs, among which the TAP-CDs (CDs synthesized using ammonium phosphate as additive reagent) show high quantum yield (QY) of 62% and red-green-blue (RGB) spectral composition of 51.67%. Besides, the TAP-CDs exhibit satisfying thermal stability within 180 °C. By virtue of good optical and thermal properties of TAP-CDs, a white light-emitting device (LED) was fabricated by combining ultraviolet chip with TAP-CDs as phosphor. The white LED emits bright warm-white light with the CIE chromaticity coordinate of (0.38, 0.35) and the corresponding color temperature (CCT) of 4450 K, indicating the potential of TAP-CDs phosphor in white LED.},
doi = {10.1063/1.4961631},
journal = {Applied Physics Letters},
number = 8,
volume = 109,
place = {United States},
year = 2016,
month = 8
}
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