An enhanced gas ionization sensor from Y-doped vertically aligned conductive ZnO nanorods

Wei Cheat Lee; Yuanxing Fang; John F.C. Turner; Jasbir S. Bedi; Christopher C. Perry; Heyong He; Rong Qian; Qiao Chen

doi:10.1016/j.snb.2016.06.146

An enhanced gas ionization sensor from Y-doped vertically aligned conductive ZnO nanorods

Wei Cheat Lee, Yuanxing Fang, John F.C. Turner, Jasbir S. Bedi, Christopher C. Perry, Heyong He, Rong Qian, Qiao Chen

Biochemistry Division

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

Abstract

A stable and highly sensitive gas ionization sensor (GIS) constructed from vertically aligned, conductive yttrium–doped ZnO nanorod (YZO NR) arrays is demonstrated. The conductive YZO NRs are synthesized using a facile one-pot hydrothermal method. At higher Y/Zn molar ratio, the aspect ratio of the YZO NRs is increased from 11 to 25. Doping with yttrium atoms decreases the electrical resistivity of ZnO NRs more than 100 fold. GIS measurements reveal a 6-fold enhancement in the sensitivity accompanied with a significant reduction in breakdown voltage from the highly conductive YZO NRs. Direct correlations between the resistivity of the NRs and GIS characteristics are established.

Original language	English
Pages (from-to)	724-732
Number of pages	9
Journal	Sensors and Actuators, B: Chemical
Volume	237
DOIs	https://doi.org/10.1016/j.snb.2016.06.146
State	Published - Dec 1 2016

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Keywords

Conductive ZnO nanorod
Gas ionization sensor
Hydrothermal synthesis

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abstract = "A stable and highly sensitive gas ionization sensor (GIS) constructed from vertically aligned, conductive yttrium–doped ZnO nanorod (YZO NR) arrays is demonstrated. The conductive YZO NRs are synthesized using a facile one-pot hydrothermal method. At higher Y/Zn molar ratio, the aspect ratio of the YZO NRs is increased from 11 to 25. Doping with yttrium atoms decreases the electrical resistivity of ZnO NRs more than 100 fold. GIS measurements reveal a 6-fold enhancement in the sensitivity accompanied with a significant reduction in breakdown voltage from the highly conductive YZO NRs. Direct correlations between the resistivity of the NRs and GIS characteristics are established.",

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AU - Lee, Wei Cheat

AU - Fang, Yuanxing

AU - Turner, John F.C.

AU - Bedi, Jasbir S.

AU - Perry, Christopher C.

AU - He, Heyong

AU - Qian, Rong

AU - Chen, Qiao

PY - 2016/12/1

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AB - A stable and highly sensitive gas ionization sensor (GIS) constructed from vertically aligned, conductive yttrium–doped ZnO nanorod (YZO NR) arrays is demonstrated. The conductive YZO NRs are synthesized using a facile one-pot hydrothermal method. At higher Y/Zn molar ratio, the aspect ratio of the YZO NRs is increased from 11 to 25. Doping with yttrium atoms decreases the electrical resistivity of ZnO NRs more than 100 fold. GIS measurements reveal a 6-fold enhancement in the sensitivity accompanied with a significant reduction in breakdown voltage from the highly conductive YZO NRs. Direct correlations between the resistivity of the NRs and GIS characteristics are established.

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An enhanced gas ionization sensor from Y-doped vertically aligned conductive ZnO nanorods

Abstract

ASJC Scopus Subject Areas

Keywords

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