Multi-color fluorescent carbon dots with single wavelength excitation for white light-emitting diodes

被引：61

作者：

Zhao, Kangxu ^{[1
]}

Zheng, Xuan ^{[1
]}

Zhang, Huijun ^{[1
]}

Xu, Menghan ^{[1
]}

Wang, Shan ^{[1
]}

Yang, Quanling ^{[1
]}

Xiong, Chuanxi ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Sch Mat Sci & Engn, Wuhan 430070, Hubei, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 793卷

基金：

中国国家自然科学基金;

关键词：

Carbon dots; Solvothermal; Photoluminescence; Excitation-independent; Optoelectronic applications; GRAPHENE QUANTUM DOTS; FULL-COLOR EMISSION; OPTICAL-PROPERTIES; BLUE LUMINESCENCE; PHOTOLUMINESCENCE; RED; RECOMBINATION; PH;

D O I：

10.1016/j.jallcom.2019.04.146

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbon dots (CDs) have been applied in numerous fields by virtue of their excellent features. Multi-color fluorescent carbon dots with high photoluminescence (PL) quantum yield are still the emphases for research. Here, by using 3,5-diaminobenzoic acid and 3,4-diaminobenzoic acid, multi-color-red, green, blue (RGB) emitting CDs (RGB-CDs) were successfully synthesized via a one-pot solvothermal route. The RGB-CDs exhibited stable optical properties and significant photoluminescence characteristics with excitation-independent. Structure and element analysis indicated that conjugated graphite structure of carbon cores and oxygen on surface states were responsible for the RGB color emissions of carbon dots. Moreover, RGB-color and white light-emitting diodes (LEDs) were fabricated by these multi-color fluorescent carbon dots. The LEDs exhibited excellent lighting performance, indicating that these RGB-CDs have the potential to substitute rare elements for solid-state optoelectronic applications. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：613 / 619

页数：7

共 48 条

[1] Photoluminescence-Tunable Carbon Nanodots: Surface-State Energy-Gap Tuning [J].