Concentration modulated photoluminescence and optical switching performance of graphene-oxide quantum dots

被引：11
作者：
Zhang, Kun [1 ,2 ]
Ma, Yong-Fu [1 ,2 ]
Zhang, Ya-Qi [1 ,2 ]
Gao, Han [1 ,2 ]
Han, Yi-Bo [1 ,2 ]
机构：
[1] Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Luoyu Rd 1037, Wuhan 430074, Hubei, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Phys, Luoyu Rd 1037, Wuhan 430074, Hubei, Peoples R China
来源：
JOURNAL OF LUMINESCENCE | 2019年 / 209卷
基金：
中国国家自然科学基金;
关键词：
Graphene oxide; Quantum dot; Photoluminescence; Optical nonlinearity; CARBON NANODOTS; FLUORESCENCE; STATE; EMISSION; FACILE;
D O I：
10.1016/j.jlumin.2019.01.040
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Graphene oxide quantum dots (GOQDs) have drawn much attention for their modulated bandgap rendering their application in optoelectronic devices. In this study, we present comprehensive photoluminescence properties of GOQDs and its related optical transitions, which agree with recent theoretical predications. In particular, ormosil gel glasses doped GOQDs was synthesized to achieve tunable photoluminescence. We also report the third-order nonlinear optical properties of the quantum dots, which were studied by using Z-scan technique. The evaluated one-photon and two-photon figures of merit demonstrate that GOQDs could be a promising candidate for the optical switching applications in a broad wavelength region.
引用
收藏
页码：116 / 120
页数：5
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