Title :
ZnO Nanowire-Reduced Graphene Oxide Hybrid Based Portable NH3 Gas Sensing Electron Device
Author :
Zhen Sun ; Da Huang ; Zhi Yang ; Xiaolin Li ; Nantao Hu ; Chao Yang ; Hao Wei ; Guilin Yin ; Dannong He ; Yafei Zhang
Author_Institution :
Dept. of Micro/Nano Electron., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
A ZnO nanowire-reduced graphene oxide (ZnO-rGO) based portable ammonia (NH3) gas sensing electron device working at room temperature has been demonstrated for the first time. The sensor is developed on a microelectrode of micro-electromechanical systems and supported by peripheral circuits and a hosting computer, which enables the real-time detection of NH3 at room temperature. In contrast to the traditional sensors based on pure graphene or ZnO nanowires alone, the ZnO-rGO based gas sensing electron device can detect low-concentration (1 ppm) NH3 with higher sensitivity (~7.2%). Besides, this sensor exhibits satisfying properties at sensing NH3 with the concentration as low as 500 ppb at room temperature.
Keywords :
ammonia; gas sensors; graphene devices; microelectrodes; nanowires; zinc compounds; NH3; ZnO; ZnO nanowire-reduced graphene oxide; ZnO-rGO based portable ammonia gas sensing electron device; hosting computer; micro-electromechanical systems; microelectrode; peripheral circuits; real-time detection; Electron devices; Gas detectors; Graphene; Nanowires; Temperature sensors; Zinc oxide; Gas sensing electron device; ZnO nanowire; ammonia; reduced graphene oxide;
Journal_Title :
Electron Device Letters, IEEE
DOI :
10.1109/LED.2015.2496177
