Gas sensing properties of NiO/SnO2 heterojunction thin film

Jiabin Fang; Yiping Zhu; Dajun Wu; Chi Zhang; Shaohui Xu; Dayuan Xiong; Pingxiong Yang; Lianwei Wang; Paul K. Chu

doi:10.1016/j.snb.2017.07.013

Gas sensing properties of NiO/SnO₂ heterojunction thin film

Jiabin Fang, Yiping Zhu^*, Dajun Wu, Chi Zhang, Shaohui Xu, Dayuan Xiong, Pingxiong Yang, Lianwei Wang, Paul K. Chu

^*Corresponding author for this work

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

71 Scopus citations

Abstract

The application of conventional tin oxide thin film sensors is limited by its low response. In this study, a heterojunction thin film composed of nickel oxide deposited by electron beam evaporation and tin oxide prepared by radio-frequency (RF) magnetron sputtering has enhanced gaseous ethanol sensing properties. The 5 nm NiO/100 nm SnO₂ gas sensor shows the excellent response 7.9 at 250 °C for 100 ppm gaseous ethanol, good reproducibility, as well as good linearity. In addition, this sensor can measure the ultra-low concentration of gaseous ethanol, and the concentration can be as low as 100 ppb. The gas sensitive properties is related to the thickness of nickel oxide and the mechanism is discussed.

Original language	English
Pages (from-to)	1163-1168
Number of pages	6
Journal	Sensors and Actuators B: Chemical
Volume	252
DOIs	https://doi.org/10.1016/j.snb.2017.07.013
State	Published - 2017

Keywords

Gas sensor
Gaseous ethanol
Heterojunction
Nickel oxide
Tin oxide

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10.1016/j.snb.2017.07.013

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title = "Gas sensing properties of NiO/SnO2 heterojunction thin film",

abstract = "The application of conventional tin oxide thin film sensors is limited by its low response. In this study, a heterojunction thin film composed of nickel oxide deposited by electron beam evaporation and tin oxide prepared by radio-frequency (RF) magnetron sputtering has enhanced gaseous ethanol sensing properties. The 5 nm NiO/100 nm SnO2 gas sensor shows the excellent response 7.9 at 250 °C for 100 ppm gaseous ethanol, good reproducibility, as well as good linearity. In addition, this sensor can measure the ultra-low concentration of gaseous ethanol, and the concentration can be as low as 100 ppb. The gas sensitive properties is related to the thickness of nickel oxide and the mechanism is discussed.",

keywords = "Gas sensor, Gaseous ethanol, Heterojunction, Nickel oxide, Tin oxide",

author = "Jiabin Fang and Yiping Zhu and Dajun Wu and Chi Zhang and Shaohui Xu and Dayuan Xiong and Pingxiong Yang and Lianwei Wang and Chu, \{Paul K.\}",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

doi = "10.1016/j.snb.2017.07.013",

language = "英语",

volume = "252",

pages = "1163--1168",

journal = "Sensors and Actuators B: Chemical",

issn = "0925-4005",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Gas sensing properties of NiO/SnO2 heterojunction thin film

AU - Fang, Jiabin

AU - Zhu, Yiping

AU - Wu, Dajun

AU - Zhang, Chi

AU - Xu, Shaohui

AU - Xiong, Dayuan

AU - Yang, Pingxiong

AU - Wang, Lianwei

AU - Chu, Paul K.

PY - 2017

Y1 - 2017

N2 - The application of conventional tin oxide thin film sensors is limited by its low response. In this study, a heterojunction thin film composed of nickel oxide deposited by electron beam evaporation and tin oxide prepared by radio-frequency (RF) magnetron sputtering has enhanced gaseous ethanol sensing properties. The 5 nm NiO/100 nm SnO2 gas sensor shows the excellent response 7.9 at 250 °C for 100 ppm gaseous ethanol, good reproducibility, as well as good linearity. In addition, this sensor can measure the ultra-low concentration of gaseous ethanol, and the concentration can be as low as 100 ppb. The gas sensitive properties is related to the thickness of nickel oxide and the mechanism is discussed.

AB - The application of conventional tin oxide thin film sensors is limited by its low response. In this study, a heterojunction thin film composed of nickel oxide deposited by electron beam evaporation and tin oxide prepared by radio-frequency (RF) magnetron sputtering has enhanced gaseous ethanol sensing properties. The 5 nm NiO/100 nm SnO2 gas sensor shows the excellent response 7.9 at 250 °C for 100 ppm gaseous ethanol, good reproducibility, as well as good linearity. In addition, this sensor can measure the ultra-low concentration of gaseous ethanol, and the concentration can be as low as 100 ppb. The gas sensitive properties is related to the thickness of nickel oxide and the mechanism is discussed.

KW - Gas sensor

KW - Gaseous ethanol

KW - Heterojunction

KW - Nickel oxide

KW - Tin oxide

UR - https://www.scopus.com/pages/publications/85026664538

U2 - 10.1016/j.snb.2017.07.013

DO - 10.1016/j.snb.2017.07.013

M3 - 文章

AN - SCOPUS:85026664538

SN - 0925-4005

VL - 252

SP - 1163

EP - 1168

JO - Sensors and Actuators B: Chemical

JF - Sensors and Actuators B: Chemical

ER -

Gas sensing properties of NiO/SnO₂ heterojunction thin film

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Keywords

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