Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 5, 2012
Previous Article Next Article

High-yield synthesis of ZnO nanowire arrays and their opto-electrical properties

Author affiliations

Abstract

In this article, ZnO nanostructures were synthesized via the hydrothermal method which used ZnCl2 and HMTA mixed solution as the precursor. A multistep growth was adopted to improve the growth restriction of a closed system, not only the length but also the aspect ratio were increased with steps of growth, and the shape of nanorods maintained integrity. Furthermore, photoluminescence spectra which have the near-band-edge-emission (∼3.37 eV) and defect-related emission show the optical properties of ZnO nanostructures. The defect-related emission intensity was greatly enhanced with the increasing surface area of ZnO nanowires. The level of the OH group was attributed to the yellow-light emission (∼580 nm) and the red-shift phenomenon. In addition, we fabricated two types of ultraviolet photodetectors: a single nanowire device and a nanowire-array device, operating at a low bias (less than 5 mV). With the lower energy consumption and the weaker persistent photoconductive effect, our ultraviolet photodetectors have better performance, exhibiting a short response time and higher sensitivity.

Graphical abstract: High-yield synthesis of ZnO nanowire arrays and their opto-electrical properties

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 06 Jul 2011, accepted on 21 Sep 2011 and first published on 19 Oct 2011


Article type: Communication
DOI: 10.1039/C1NR10742A
Citation: Nanoscale, 2012,4, 1476-1480
  •   Request permissions

    High-yield synthesis of ZnO nanowire arrays and their opto-electrical properties

    C. Kao, C. Hsin, C. Huang, S. Yu, C. Wang, P. Yeh and W. Wu, Nanoscale, 2012, 4, 1476
    DOI: 10.1039/C1NR10742A

Search articles by author