Electrical and gas sensing properties of ZnO nanorod arrays directly grown on a four-probe electrode system

被引：52

作者：

Ahsanulhaq, Q. ^{[2
]}

Kim, J. H. ^{[2
]}

Lee, J. S. ^{[1
]}

Hahn, Y. B. ^{[2
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Elect & Elect Engn, Pohang, South Korea

[2] Chonbuk Natl Univ, Ctr Future Energy Mat & Devices BK21, Sch Semicond & Chem Engn, Jeonju 561756, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 03期

关键词：

ZnO nanorod arrays; Four-probe electrode; Electrical and gas sensing properties; Solution method; OPTICAL-PROPERTIES; NANOPARTICLES;

D O I：

10.1016/j.elecom.2010.01.023

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A method for measuring the electrical characteristics of aligned ZnO nanorod arrays (NRAs) directly grown on a pre-patterned four-point probe system in solution was proposed. This four-probe method enabled us to perform electrical measurements directly on the as-grown ZnO nanorod arrays without any additional processing. The location, shape and length of the rods directly grown on the four-probe electrodes were well controlled. The current-voltage characteristics showed a low turn-on voltage and a high saturation current. These ZnO NRAs devices were implemented as gas sensors for detecting hydrogen. The sensitivity increased with the concentration of H-2 and the operating temperature. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：475 / 478

页数：4

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