Crystalline(phthalic acid)-induced Luminescence of Carbon Dots for White-light-emitting Diode Devices

Bo-rui LYU; Jun-chao CUI; Wen-jun XU; Zhen-xing QIN

doi:10.37188/CJL.20220003

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Crystalline(phthalic acid)-induced Luminescence of Carbon Dots for White-light-emitting Diode Devices

Synthesis and Properties of Materials | 更新时间：2022-04-20

- Crystalline(phthalic acid)-induced Luminescence of Carbon Dots for White-light-emitting Diode Devices
  增强出版
- Chinese Journal of Luminescence Vol. 43, Issue 4, Pages: 528-535(2022)
- 作者机构：
  
  1.太原科技大学　应用科学学院，山西　太原　030024
  2.山西量界数字科技有限公司，山西　太原　030021
- 作者简介：
- 基金信息：
  
  Key R & D Projects of Shanxi Province(201903D321111);National Natural Science Foundation of China(51502189);Shanxi Graduate Education Innovation Project(2020SY441)
- DOI：10.37188/CJL.20220003
  CLC： O482.31
- Published：01 April 2022，
  
  Received：06 January 2022，
  
  Revised：18 January 2022，
- 稿件说明：
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BO-RUI LYU, JUN-CHAO CUI, WEN-JUN XU, et al. Crystalline(phthalic acid)-induced Luminescence of Carbon Dots for White-light-emitting Diode Devices. [J]. Chinese journal of luminescence, 2022, 43(4): 528-535.
DOI：

BO-RUI LYU, JUN-CHAO CUI, WEN-JUN XU, et al. Crystalline(phthalic acid)-induced Luminescence of Carbon Dots for White-light-emitting Diode Devices. [J]. Chinese journal of luminescence, 2022, 43(4): 528-535. DOI： 10.37188/CJL.20220003.

摘要

通过简单的方法获得基于碳纳米点的固态荧光材料，实现该类材料在光电器件领域的应用研究有着重要的意义。然而，由于聚集诱导猝灭效应的存在，合成该类材料仍面临着严峻的挑战。本文报道了一种简单热解合成硫(S)和氮(N)共掺杂荧光碳点晶态材料的方法。优化制备条件后，获得的材料能发出耀眼的橙红色荧光，这是由于在形成碳点的同时，碳点的周围形成了以邻苯二甲酸为前体的晶态物，该晶态物对碳点形成了保护屏障，阻碍了碳点的聚集，弱化了碳点的光猝灭效应。此外，由于硫和氮的共掺杂作用，该材料发光呈现出多峰发射的特征，这赋予了该荧光材料在封装白光发光二极管方面的优势。因此，除实现发光二极管器件的橙色发光外，该材料与商用荧光粉(黄绿色的SiAlON∶Eu

和蓝色的BaMgAl

∶Eu

)相结合，在色度坐标为(0.43

0.40)时获得了相关色温约3 100 K、显色指数82的暖白光，结果表明该类荧光纳米材料在照明领域具有广阔的应用前景。

Abstract

Obtaining simply C-dots-based solid-state fluorescent materials is profound in photoelectric field

yet it is still faced with the challenge to synthesize such material due to the serious quenching effect generated by aggregation of C-dots currently. Here

a pyrolytic route to rapidly synthesize sulfur(S)

nitrogen(N)-codoped fluorescent carbon dots wrapped by the crystalline phthalate is reported. After optimizing the preparation conditions

the composite emits a dazzling orange-red fluorescence due to the crystal structured by phthalic acid precursor around the single C-dots during the formation of C-dots

and the formation of crystal creates a barrier to avoid the aggregation of C-dots. In addition

the emission of such composite is characteristic of the multipeaks due to the co-doping of sulfur and nitrogenelements

endowing it an advantage to fabricate white-light-emitting diode. As a result

it achieves a warm-white light with the correlated color temperature(CCT)~3 100 K

color rendering index(CRI)~82 at the chromaticity coordinates of (0.43

0.40) combined with the commercial phosphors besides of the light emitting diode with an orange light

endowing such fluorescent nanomaterials broad prospect in the photoelectric industry.

关键词

碳点硫氮共掺杂结晶诱导发光二极管

Keywords

C-dotssulfur and nitrogen co-dopingcrystalline-inducedLED

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Related Institution

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商洛学院化学工程与现代材料学院, 陕西商洛 726000

南昌大学材料科学与工程学院, 江西南昌 330031

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