UV photodetector behavior of 2D ZnO plates prepared by electrochemical deposition

被引：49

作者：

Al-Hardan, N. H. ^{[1
]}

Abdullah, M. J. ^{[2
]}

Ahmed, N. M. ^{[2
]}

Yam, F. K. ^{[2
]}

Aziz, A. Abdul ^{[2
]}

机构：

[1] Minist Sci & Technol, Baghdad, Iraq

[2] Univ Sains Malaysia, Sch Phys, George Town 11800, Malaysia

来源：

SUPERLATTICES AND MICROSTRUCTURES | 2012年 / 51卷 / 06期

关键词：

2D structure; Electrochemical deposition; Thin films; UV photodetector; Zinc oxide; RF-SPUTTERED ZNO; ZINC-OXIDE; OPTICAL-PROPERTIES; GROWTH; NANORODS; DEFECTS; FILMS;

D O I：

10.1016/j.spmi.2012.03.030

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Zinc oxide (ZnO) with 2D hexagonal structure was successfully prepared using electrochemical deposition (ECD) method on a quartz substrate pre-coated with indium-doped ZnO layer. The X-ray diffraction of the prepared sample confirmed that the hexagonal structure had a dominant c-axis orientation. The scanning electron microscopy revealed the 2D hexagonal structure of the prepared ZnO. An ultraviolet (UV) photodetector based on the prepared ZnO was fabricated using two parallel palladium thin films as electrodes. The maximum response of the UV photodetector was in the range of 300-350 nm wavelength. The internal gain of the ZnO photodetector was 2.7 at low UV intensity. The response and the recovery times were estimated to be 26 and 11 s, respectively. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：765 / 771

页数：7

共 33 条

[1] Gas sensing properties of defect-controlled ZnO-nanowire gas sensor [J].