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Document Details
Document Type
:
Article In Journal
Document Title
:
Hierarchical ZnO nanostructures: Growth and optical properties
Hierarchical ZnO nanostructures: Growth and optical properties
Subject
:
Physics
Document Language
:
English
Abstract
:
Growth of hierarchical ZnO nanostructures composed of ZnO nanoneedles have been achieved via simple thermal evaporation process by using metallic zinc powder in the presence of oxygen at low temperature of 460°C on silicon substrate without the use of any kind of metal catalysts or additives. It is confirmed by detailed structural studies that the as-grown hierarchical nanostructures are single crystalline with a wurtzite hexagonal phase and nanoneedles of these structures are grown along the c-axis in the [0001] direction. The Raman-scattering analysis substantiates a wurtzite hexagonal phase with a good crystal quality for the as-grown products. Room-temperature photoluminescence (PL) exhibits a strong UV emission at 380 nm confirming the excellent optical properties of as-synthesized hierarchical structures. A plausible growth mechanism is also proposed to clearly understand the growth process of the synthesized structures. Copyright © 2008 American Scientific Publishers All rights reserved.
ISSN
:
1533-4880
Journal Name
:
Journal of Nanoscience and Nanotechnology, Volume 8, Issue 12, December 2008, Pages 6355-6360
Volume
:
80
Issue Number
:
12
Publishing Year
:
2008 AH
2008 AD
Number Of Pages
:
6
Article Type
:
Article
Added Date
:
Thursday, October 15, 2009
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
Umar, A
Umar, A
Researcher
Doctorate
Al Hajry, A
Al Hajry, A
Researcher
Doctorate
صالح هديهد سلمان الحنيطي
Al-Heniti
Researcher
Doctorate
salheniti@kau.edu.sa
Hahn, Y.-B
Hahn, Y.-B
Researcher
Doctorate
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