Cited 1 time in webofscience Cited 0 time in scopus

Effect of the Morphology and Electrical Property of Metal-Deposited ZnO Nanostructures on CO Gas Sensitivity

Title
Effect of the Morphology and Electrical Property of Metal-Deposited ZnO Nanostructures on CO Gas Sensitivity
Authors
Hwang, Sung-HoKim, Young KwangHong, Seong HuiLim, Sang Kyoo
DGIST Authors
Hwang, Sung-Ho; Kim, Young Kwang; Hong, Seong Hui; Lim, Sang Kyoo
Issue Date
2020-11
Citation
Nanomaterials, 10(11), 2124
Type
Article
Article Type
Article
Author Keywords
CO sensorZnOmorphologymetal nanoparticle
Keywords
SENSORNANOPARTICLESFILMAU
ISSN
2079-4991
Abstract
The development of a highly sensitive gas sensor for toxic gases is an important issue in that it can reduce the damage caused by unexpected gas leaks. In this regard, in order to make the sensor accurate and highly responsive, we have investigated which morphology is effective to improve the sensitivity and how the deposited nanoparticle affects the sensitivity by controlling the morphology of semiconductor oxides-either nanorod or nanoplate-and depositing metal nanoparticles on the semiconductor surface. In this study, we compared the CO gas sensitivity for sensors with different morphology (rod and plate) of ZnO nanostructure with metal nanoparticles (gold and copper) photodeposited and investigated the correlation between the gas sensitivity and some factors such as the morphology of ZnO and the properties of the deposited metal. Among the samples, Au/ZnO nanorod showed the best response (similar to 86%) to the exposure of 100 ppm CO gas at 200 degrees C. The result showed that the electrical properties due to the deposition of metal species also have a strong influence on the sensor properties such as sensor response, working temperature, the response and recovery time, etc., together with the morphology of ZnO. © 2020 by the authors.
URI
http://hdl.handle.net/20.500.11750/12757
DOI
10.3390/nano10112124
Publisher
MDPI AG
Related Researcher
Files:
There are no files associated with this item.
Collection:
Division of Energy Technology1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE