Preparation and Application of Bio-based Carbon Dots for LED Chips

Qin WANG; Wen YANG; Jing-ru ZHUANG; Jing LI; Pei-zhi YANG; Zheng-liang WANG

doi:10.37188/CJL.20210159

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Preparation and Application of Bio-based Carbon Dots for LED Chips

Invited Paper | 更新时间：2021-09-03

- Preparation and Application of Bio-based Carbon Dots for LED Chips
  增强出版
- Chinese Journal of Luminescence Vol. 42, Issue 8, Pages: 1314-1322(2021)
- 作者机构：
  
  1.云南师范大学　可再生能源材料先进技术与制备教育部重点实验室，云南　昆明　 650500
  2.云南师范大学　化学化工学院，云南　昆明　 650500
  3.云南民族大学　化学与环境学院，云南　昆明　 650500
- 作者简介：
  
  wangzhengliang@foxmail.com
- 基金信息：
  
  National Natural Science Foundation of China(U1802257);the Joint Funds of the National Natural Science Foundation of China-Yunnan Provinces(U1702254);The Program for Innovative Research Team (in Science and Technology) in University of Yunnan Province
- DOI：10.37188/CJL.20210159
  CLC：
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Qin WANG, Wen YANG, Jing-ru ZHUANG, et al. Preparation and Application of Bio-based Carbon Dots for LED Chips. [J]. Chinese Journal of Luminescence 42(8):1314-1322(2021)
DOI：

Qin WANG, Wen YANG, Jing-ru ZHUANG, et al. Preparation and Application of Bio-based Carbon Dots for LED Chips. [J]. Chinese Journal of Luminescence 42(8):1314-1322(2021) DOI： 10.37188/CJL.20210159.

摘要

以大麦苗为碳源，采用一锅热解法成功获得碳点(CDs)，并对其硼、氮及混合掺杂体系进行了研究。该类型碳点在水溶液中表现出很强的紫外光区宽带吸收，并产生独特的近紫外光和蓝光双发射光学特性；单掺硼及硼氮共掺的CDs粉体表现出良好的固体发光特性，在蓝光区具有较强激发并产生明亮的绿光发射。将这两种CDs作为荧光粉与蓝光GaN芯片结合，制作出LED器件，表现出良好的发光性能。通过K,2,SiF,6,∶Mn,4+,红粉的引入可得到高效、高显色性的白光LED。

Abstract

Carbon dots(CDs) were successfully prepared by the one-pot pyrolysis method using the barley seedling as carbon source. The boron, nitrogen and mixed doping system of CDs were studied. The solution of CDs exhibits broad absorption in the UV region. Two emission bands can be observed in the near UV and blue regions. It is worth to note that CDs powder doped with B and co-doped with B and N can be effectively excited by the blue light and emit bright green light. The LED devices were fabricated by combining such two kinds of CDs powder, which exhibit excellent luminescent properties. Using commercial K,2,SiF,6,∶Mn,4+, as red components, white LEDs with high luminous efficiency and color rendering index can be obtained.

关键词

碳点大麦苗发光性能LED器件

Keywords

carbon dotsbarley seedlingluminescent propertiesLED devices

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Hubei Key Laboratory of Micro-Nanoelectronic Materials and Devices， School of Microelectronics， Hubei University

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