Title

Fabrication and characterization of an individual ZnO microwire-based UV photodetector

Authors

Authors

G. Y. Chai; L. Chow; O. Lupan; E. Rusu; G. I. Stratan; H. Heinrich; V. V. Ursaki;I. M. Tiginyanu

Comments

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Abbreviated Journal Title

Solid State Sci.

Keywords

ZnO microwire; Photodetector; Ultraviolet UV; radiation; HUMIDITY SENSORS; Chemistry, Inorganic & Nuclear; Chemistry, Physical; Physics, Condensed; Matter

Abstract

In this paper, a single ZnO microwire-based photodetector for the monitoring of ultraviolet (UV) radiation is described. Single crystal ZnO microwires were synthesized using a chemical vapor deposition (CVD) on the Si or Al2O3 substrate. The UV photodetector was fabricated by using in-situ lift-out method in a focused ion beam system to manipulate individual zinc oxide microwire. The photodetector prototype consists of a single ZnO microwire (20 mu m in length) and exhibits a response of similar to 10 mA/W for UV light (365 nm) under 1 V bias. The transient response measurements revealed relatively fast response. The effect of oxygen adsorption and of different relative humidity conditions on the electronic transport through individual microwire is explored and discussed. (C) 2011 Elsevier Masson SAS. All rights reserved.

Journal Title

Solid State Sciences

Volume

13

Issue/Number

5

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

1205

Last Page

1210

WOS Identifier

WOS:000291081900066

ISSN

1293-2558

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