Title

Novel Hydrogen Gas Sensor Based On Single Zno Nanorod

Keywords

Gas sensor; Hydrogen; Nanofabrication; Nanoscale materials and structures; ZnO nanorod

Abstract

For extensive use in an industrialized process of individual ZnO nano/microrods as building nanoblock in novel hydrogen sensors, a simple, inexpensive, and bio-safe synthesis process and nanofabrication route is required. Here, we report a cost-effective and fast synthesis route for ZnO one-dimensional nanorod using an aqueous-based approach in a reactor. Our synthesis technique permits nano/microrods to be easily transferred to other substrates and to be distributed on the surface. This flexibility of substrate choice opens the possibility of using focused ion beam (FIB/SEM) system for handling and fabricating nanosensors. The main advantage of this procedure is a quick verification/testing of concept and is compatible with micro/nanoelectronic devices. The described nanofabrication steps permitted us to obtain a 90% success rate for building single nanorod sensor. A sensitivity of ∼4% was obtained for a single ZnO nanorod hydrogen sensor at 200 ppm H2 in the air at room temperature. The nanosensor has a high selectivity for H2, since its sensitivity for O2, CH4, CO, ethanol or LPG are less than 0.25%. © 2008 Elsevier B.V. All rights reserved.

Publication Date

11-1-2008

Publication Title

Microelectronic Engineering

Volume

85

Issue

11

Number of Pages

2220-2225

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.mee.2008.06.021

Socpus ID

53849094412 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/53849094412

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