Main Page
عربي
English
About
Admission
Academic
Research and Innovations
University Life
E-Services
Search
Faculty of Science and Arts - Khulais
Document Details
Document Type
:
Article In Journal
Document Title
:
Influence of heat treatment on the optical properties and structure of Ge20Te80 films
تأثير المعالجة الحرارية على الخصائص الضوئية والتركيب لأفلام جرمانيوم ﺘﻠﻴﺭﻴﻭﻡ
Subject
:
physics
Document Language
:
English
Abstract
:
Ge20Te80 films were thermally evaporated onto ultrasonically cleaned glass substrates kept at room temperature. The as-deposited films showed an amorphous structure. An X-ray technique, a scanning electron microscope, and a transmission electron microscope were used to follow up the structural transformations that resulted from heat treatment. From the spectral dependence of the absorption coefficient, a direct electronic transition was mainly responsible for the photon absorption inside the films. The optical data indicated that the width of the localized states’ tails increases while the optical gap decreases with an increase of the annealing temperature of the investigated films. The optical results have been interpreted on the basis of amorphous–crystalline transformations.
ISSN
:
09478396
Journal Name
:
Applied Physics A
Volume
:
78
Issue Number
:
4
Publishing Year
:
1426 AH
2004 AD
Article Type
:
Article
Added Date
:
Tuesday, December 28, 2010
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
فريد محمد عبدالرحيم
Abdel-Rahim, Farid Mohammad
Researcher
Doctorate
farid.elkhateb@gmail.com
Files
File Name
Type
Description
28325.pdf
pdf
Back To Researches Page