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Document Details
Document Type
:
Article In Journal
Document Title
:
Characterization of the MgO/GaSe0.5S0.5 heterojunction designed for visible light communications
Characterization of the MgO/GaSe0.5S0.5 heterojunction designed for visible light communications
Subject
:
physics
Document Language
:
English
Abstract
:
In this study an optoelectronic design is reported and characterized. The device is made of p-type MgO solved in sodium silicate binder and n-type GaSe0.5S0.5 heterojunction. It is described by means of Xray diffraction, optical absorption and reflection in the incident light wavelength range of 190-1100 nm and by means of dark and 406 nm laser excited current (I)-voltage (V) characteristics. The optical reflectance was also measured as a function of angle of incidence of light in the range of 35-80. The structural analysis revealed no change in the existing phases of the device composers. In addition, it was observed that for pure sodium silicate and for a 67% content of MgO solved in sodium silicate binder (33%), the heterojunction exhibits a valence band shift of 0.40 and 0.70 eV, respectively. The painting of MgO improved the light absorbability significantly. On the other hand, the angle-dependent reflectance measurements on the crystal displayed a Brewster condition at 70. The MgO/ GaSe0.5S0.5 heterojunction exhibited no Brewster condition when irradiated from the MgO side. Moreover, for the crystal and the MgO/ GaSe0.5S0.5 heterojunction, the dielectric spectral analysis revealed a pronounced increase in the quality factor of the device. The I-V characteristics of the device revealed typical optoelectronic properties with high photo-response that could amplify the dark current 24 times when irradiated with 5 mW power laser light. The structural, optical, dielectric and electrical features of the MgO/GaSe0.5S0.5 heterojunction nominate it for use in visible light communication technology
ISSN
:
1369-8001
Journal Name
:
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume
:
39
Issue Number
:
1
Publishing Year
:
1435 AH
2015 AD
Article Type
:
Article
Added Date
:
Wednesday, August 16, 2017
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
A.F Qasrawi
Qasrawi, A.F
Investigator
Doctorate
atef.qasrawi@atilim.edu.tr
S.E AlGarni
AlGarni, S.E
Researcher
Doctorate
N.M Gasanly
Gasanly, N.M
Researcher
Files
File Name
Type
Description
42659.pdf
pdf
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