Photo-induced selective gas detection based on reduced graphene oxide/Si Schottky diode

被引：53
|
作者：
Zhu, Miao [1 ,2 ]
Li, Xinming [3 ]
Chung, Sunki [1 ]
Zhao, Liyun [4 ]
Li, Xiao [1 ,2 ]
Zang, Xiaobei [1 ]
Wang, Kunlin [1 ]
Wei, Jinquan [1 ]
Zhong, Minlin [1 ]
Zhou, Kun [5 ]
Xie, Dan [6 ]
Zhu, Hongwei [1 ,2 ]
机构：
[1] Tsinghua Univ, Key Lab Mat Proc Technol MOE, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Ctr Nano & Micro Mech, Beijing 100084, Peoples R China
[3] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China
[4] Tsinghua Univ, Dept Thermal Engn, Beijing 100084, Peoples R China
[5] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
[6] Tsinghua Univ, Inst Microelect, Tsinghua Natl Lab Informat Sci & Technol TNList, Beijing 100084, Peoples R China
来源：
CARBON | 2015年 / 84卷
关键词：
HETEROJUNCTION SOLAR-CELLS; JUNCTION; ANTIREFLECTION; EFFICIENCY; SENSOR;
D O I：
10.1016/j.carbon.2014.12.008
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：
Reduced graphene oxide (RGO)/Si Schottky diode has been fabricated by a simple drop-casting/annealing process. Common combustible and/or toxic gases including CH4, O-2, CO, NO2, NO, and SO2 were employed to evaluate the detection performance of such device. The relationship between current response and gas flow rate, concentration, bias voltage as well as operating time has been systematically studied, and the results indicated that the RGO/Si-based device is selective to gases like NO2 and NO. In some cases (i.e. flow rate detection), however, the current response for one gas is completely contrary to others, presumably due to the oxygen functional groups (OFGs) presiding on the surface of reduced graphene oxide. Finally, the effects of OFGs on the gas detection performance of RGO/Si-based devices were thoroughly discussed. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：138 / 145
页数：8
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