Multicolour light emission from chlorine-doped graphene quantum dots

被引：163

作者：

Li, Xueming ^{[1
]}

Lau, Shu Ping ^{[2
]}

Tang, Libin ^{[2
,3
]}

Ji, Rongbin ^{[3
]}

Yang, Peizhi ^{[1
]}

机构：

[1] Yunnan Normal Univ, Solar Energy Res Inst, Kunming 650092, Peoples R China

[2] Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China

[3] Kunming Inst Phys, Kunming 650223, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2013年 / 1卷 / 44期

基金：

中国国家自然科学基金;

关键词：

PHOTOLUMINESCENCE; CONVERSION; AVENUE; BLUE;

D O I：

10.1039/c3tc31473a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multicolour emission is realized in chlorine-doped GQDs (Cl-GQDs) prepared by a facile hydrothermal method using fructose and hydrochloric acid as source materials. The average diameter of a Cl-GQD is about 5.4 nm with 2 at.% Cl. The emission colour of the Cl-GQDs can be tuned successively from blue to white, orange, green and red simply by varying the excitation wavelength between 300 and 600 nm. The multicolour emission from the Cl-GQDs can be attributed to Cl doping, which introduces additional energy levels between C pi and C pi*. The multicolour Cl-GQDs should find applications in bioimaging and optoelectronic devices.

引用

页码：7308 / 7313

页数：6

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