Gated graphene/titanium dioxide-based photodetector

被引：11

作者：

Afzali, Parvaneh ^{[1
]}

Abdi, Yaser ^{[1
]}

Arzi, Ezatollah ^{[1
]}

机构：

[1] Univ Tehran, Dept Phys, Nanophys Res Lab, Tehran 1439955961, Iran

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2014年 / 16卷 / 10期

关键词：

Photodetector; Graphene; Titanium dioxide; Gated graphene/TiO2 field effect photodetector; GRAPHENE OXIDE; REDUCTION;

D O I：

10.1007/s11051-014-2659-9

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A graphene/TiO2-based field effect photodetector with large photocurrent response controlled by applying back-gate voltage is proposed. The internal electric field caused by Fermi energy difference between gated graphene and TiO2 yields high photocurrent even in no direct source-drain bias, as a consequent of which, low dark current and more efficiency is obtained for the device. TiO2 nanoparticles, deposited directly on graphene layer by chemical vapor deposition method, improve the performance of photodetector by accepting photo-exited electrons from graphene.

引用

页数：7

共 17 条

[1] Directional reduction of graphene oxide sheets using photocatalytic activity of ZnO nanowires for the fabrication of a high sensitive oxygen sensor [J].

Afzali, Parvaneh ;

Abdi, Yaser ;

Arzi, Ezatollah .

SENSORS AND ACTUATORS B-CHEMICAL, 2014, 195 :92-97

[2]

[Anonymous], 2000, Solid state electronic devices

[3] Graphene Photonics, Plasmonics, and Broadband Optoelectronic Devices [J].

Bao, Qiaoliang ;

Loh, Kian Ping .

ACS NANO, 2012, 6 (05) :3677-3694

[4] A highly sensitive ultraviolet sensor based on a facile in situ solution-grown ZnO nanorod/graphene heterostructure [J].

Chang, Haixin ;

Sun, Zhenhua ;

Ho, Keith Yat-Fung ;

Tao, Xiaoming ;

Yan, Feng ;

Kwok, Wai-Ming ;

Zheng, Zijian .

NANOSCALE, 2011, 3 (01) :258-264

[5] Spatially resolved raman spectroscopy of single- and few-layer graphene [J].

Graf, D. ;

Molitor, F. ;

Ensslin, K. ;

Stampfer, C. ;

Jungen, A. ;

Hierold, C. ;

Wirtz, L. .

NANO LETTERS, 2007, 7 (02) :238-242

[6] PREPARATION OF GRAPHITIC OXIDE [J].

HUMMERS, WS ;

OFFEMAN, RE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1958, 80 (06) :1339-1339

[7] Theoretical study of the role of metallic contacts in probing transport features of pure and defected graphene nanoribbons [J].

La Magna, Antonino ;

Deretzis, Ioannis .

NANOSCALE RESEARCH LETTERS, 2011, 6 :X1-5

[8] Dramatically Enhanced Photoresponse of Reduced Graphene Oxide with Linker-Free Anchored CdSe Nanoparticles [J].

Lin, Yue ;

Zhang, Kun ;

Chen, Wufeng ;

Liu, Yiding ;

Geng, Zhigang ;

Zeng, Jie ;

Pan, Nan ;

Yan, Lifeng ;

Wang, Xiaoping ;

Hou, J. G. .

ACS NANO, 2010, 4 (06) :3033-3038

[9] Graphene photodetectors for high-speed optical communications [J].

Mueller, Thomas ;

Xia, Fengnian ;

Avouris, Phaedon .

NATURE PHOTONICS, 2010, 4 (05) :297-301

[10] Hydrazine-reduction of graphite- and graphene oxide [J].

Park, Sungjin ;

An, Jinho ;

Potts, Jeffrey R. ;

Velamakanni, Aruna ;

Murali, Shanthi ;

Ruoff, Rodney S. .

CARBON, 2011, 49 (09) :3019-3023

← 1 2 →