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Large-area uniform electron doping of graphene by Ag nanofilm

Authors :
Xiaopeng Guo
Lilan Peng
Libin Tang
Jinzhong Xiang
Rongbin Ji
Kai Zhang
Chi Man Luk
Sin Ki Lai
Ruimin Wan
Yu Duan
Shu Ping Lau
Source :
AIP Advances, Vol 7, Iss 4, Pp 045209-045209-6 (2017)
Publication Year :
2017
Publisher :
AIP Publishing LLC, 2017.

Abstract

Graphene has attracted much attention at various research fields due to its unique optical, electronic and mechanical properties. Up to now, graphene has not been widely used in optoelectronic fields due to the lack of large-area uniform doped graphene (n-doped and p-doped) with smooth surface. Therefore, it is rather desired to develop some effective doping methods to extend graphene to optoelectronics. Here we developed a novel doping method to prepare large-area (> centimeter scale) uniform doped graphene film with a nanoscale roughness(RMS roughness ∼1.4 nm), the method (nano-metal film doping method) is simple but effective. Using this method electron doping (electron-injection) may be easily realized by the simple thermal deposition of Ag nano-film on a transferred CVD graphene. The doping effectiveness has been proved by Raman spectroscopy and spectroscopic ellipsometry. Importantly, our method sheds light on some potential applications of graphene in optoelectronic devices such as photodetectors, LEDs, phototransistors, solar cells, lasers etc.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
7
Issue :
4
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.19f5b86d8ba04e89b73cfcef1f6e6bc9
Document Type :
article
Full Text :
https://doi.org/10.1063/1.4979113