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

Version 2 2023-06-12, 08:29
Version 1 2023-06-09, 01:53
journal contribution
posted on 2023-06-12, 08:29 authored by Wei Cheat Lee, Yuanxing Fang, John TurnerJohn Turner, Jasbir S Bedi, Christopher C Perry, Heyong He, Rong Qian, Qiao ChenQiao Chen
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.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Sensors and Actuators B: Chemical

ISSN

0925-4005

Publisher

Elsevier

Volume

237

Page range

724-732

Department affiliated with

  • Chemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-06-27

First Open Access (FOA) Date

2018-02-19

First Compliant Deposit (FCD) Date

2018-02-19

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