The emission wavelength dependent photoluminescence lifetime of the N-doped graphene quantum dots

被引：50
作者：
Deng, Xingxia [1 ,2 ,3 ]
Sun, Jing [4 ]
Yang, Siwei [4 ]
Shen, Hao [1 ]
Zhou, Wei [1 ]
Lu, Jian [1 ]
Ding, Guqiao [4 ]
Wang, Zhongyang [1 ,2 ]
机构：
[1] Chinese Acad Sci, Shanghai Adv Res Inst, Res Ctr Quantum Macrophenomenon & Applicat, Shanghai 201210, Peoples R China
[2] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 24期
关键词：
LIGHT; STATE; SIZE;
D O I：
10.1063/1.4937923
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Aromatic nitrogen doped graphene quantum dots were investigated by steady-state and time-resolved photoluminescence (PL) techniques. The PL lifetime was found to be dependent on the emission wavelength and coincident with the PL spectrum, which is different from most semiconductor quantum dots and fluorescent dyes. This result shows the synergy and competition between the quantum confinement effect and edge functional groups, which may have the potential to guide the synthesis and expand the applications of graphene quantum dots. (C) 2015 AIP Publishing LLC.
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页数：4
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