Title

A Low-Energy Room-Temperature Hydrogen Nanosensor: Utilizing The Schottky Barriers At The Electrode/Sensing-Material Interfaces

Keywords

Hydrogen sensor; In2O3-doped SnO2; interdigitated electrodes (IDEs); Schottky barrier

Abstract

The hydrogen-sensing performance of a nanosensor integrating interdigitated electrodes with a gap of 100 nm and indium-oxide-doped tin dioxide nanoparticles is investigated at room temperature. The nonlinear behavior observed from the I/V curves of the sensor in air atmosphere indicated the presence of a Schottky barrier contact at the electrode/sensing-material interface. The linear I/V response obtained in hydrogen atmosphere suggested that the Schottky barrier height could be modulated in the presence of hydrogen. At a low applied voltage of 0.4 V and 0.09-vol% hydrogen gas exposure, a very large sensitivity of ∼ 2300 and a short response time of ∼127 s were recorded. © 2010 IEEE.

Publication Date

7-1-2010

Publication Title

IEEE Electron Device Letters

Volume

31

Issue

7

Number of Pages

770-772

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/LED.2010.2049473

Socpus ID

77954145375 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77954145375

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