Highly sensitive ZnO nanowire CO sensors with the adsorption of Au nanoparticles

Shoou Jinn Chang; Ting Jen Hsueh; I. Cherng Chen; Bohr Ran Huang

doi:10.1088/0957-4484/19/17/175502

Highly sensitive ZnO nanowire CO sensors with the adsorption of Au nanoparticles

Shoou Jinn Chang, Ting Jen Hsueh, I. Cherng Chen, Bohr Ran Huang

Institute of Microelectronics

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

212 Citations (Scopus)

Abstract

In this study, the growth of high density single-crystalline ZnO nanowires on patterned ZnO:Ga/SiO₂/Si templates was reported. We also adsorbed Au nanoparticles onto nanowire surfaces and fabricated ZnO nanowire CO sensors. With 50 ppm CO gas, it was found that we could enhance the device sensitivities at 350°C from 4.2% to 46.5% by the adsorption of Au nanoparticles. It was also found that measured sensitivities were around 30%, 37%, 46.5% and 53% when concentration of the injected CO gas was 5, 20, 50 and 100 ppm, respectively.

Original language	English
Article number	175502
Journal	Nanotechnology
Volume	19
Issue number	17
DOIs	https://doi.org/10.1088/0957-4484/19/17/175502
Publication status	Published - 2008 Apr 30

All Science Journal Classification (ASJC) codes

General Chemistry
Mechanics of Materials
Mechanical Engineering
Bioengineering
Electrical and Electronic Engineering
General Materials Science

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abstract = "In this study, the growth of high density single-crystalline ZnO nanowires on patterned ZnO:Ga/SiO2/Si templates was reported. We also adsorbed Au nanoparticles onto nanowire surfaces and fabricated ZnO nanowire CO sensors. With 50 ppm CO gas, it was found that we could enhance the device sensitivities at 350°C from 4.2% to 46.5% by the adsorption of Au nanoparticles. It was also found that measured sensitivities were around 30%, 37%, 46.5% and 53% when concentration of the injected CO gas was 5, 20, 50 and 100 ppm, respectively.",

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N2 - In this study, the growth of high density single-crystalline ZnO nanowires on patterned ZnO:Ga/SiO2/Si templates was reported. We also adsorbed Au nanoparticles onto nanowire surfaces and fabricated ZnO nanowire CO sensors. With 50 ppm CO gas, it was found that we could enhance the device sensitivities at 350°C from 4.2% to 46.5% by the adsorption of Au nanoparticles. It was also found that measured sensitivities were around 30%, 37%, 46.5% and 53% when concentration of the injected CO gas was 5, 20, 50 and 100 ppm, respectively.

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Highly sensitive ZnO nanowire CO sensors with the adsorption of Au nanoparticles

Abstract

All Science Journal Classification (ASJC) codes

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