Ultra-High Quantum Yield of Graphene Quantum Dots: Aromatic-Nitrogen Doping and Photoluminescence Mechanism

被引：191

作者：

Sun, Jing ^{[1
]}

Yang, Siwei ^{[1
]}

Wang, Zhongyang ^{[2
]}

Shen, Hao ^{[2
]}

Xu, Tao ^{[3
]}

Sun, Litao ^{[3
]}

Li, Hao ^{[4
]}

Chen, Wenwen ^{[5
]}

Jiang, Xingyu ^{[5
]}

Ding, Guqiao ^{[1
]}

Kang, Zhenhui ^{[4
]}

Xie, Xiaoming ^{[1
]}

Jiang, Mianheng ^{[1
]}

机构：

[1] Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 20050, Peoples R China

[2] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 20050, Peoples R China

[3] Southeast Univ, Sch Elect Sci & Engn, SEU FEI Nanopico Ctr, Key Lab MEMS,Minist Educ, Nanjing 210096, Jiangsu, Peoples R China

[4] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Collaborat Innovat Ctr Suzhou, Nano Sci & Technol, Suzhou 215123, Peoples R China

[5] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

来源：

PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION | 2015年 / 32卷 / 04期

基金：

中国国家自然科学基金;

关键词：

DOPED GRAPHENE; MICHAEL ADDITION; BLUE; CELLS; OXIDE;

D O I：

10.1002/ppsc.201400189

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：

1-3 nm nitrogen-doped graphene quantum dots with quantum yield of 0.74 are synthesized via cutting graphene oxide and in situ doping. The size is determined by the remaining graphitic domains of precursor. The doping mechanism is illustrated, and the dominant photoluminescence factor is experimentally confirmed to be the n-π∗ transition between the lattice-doped nitrogen and the conjugate structure of graphene. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：434 / 440

页数：7

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