Characterization of (CuInSeTe, Cuisse and CuInSTe) CdS heterojunction
Other Title(s)
خواص المفارق الهجينة (CuInSeTe, CuInSSe and CuInSTe) CdS
Dissertant
Thesis advisor
al-Jamil, Muzaffar Fuad
Hasan, Bushra Abbas
Comitee Members
Shaban, Salma M.
Muhammad, Muzaffar A.
University
University of Baghdad
Faculty
College of Science
Department
Department of Physics
University Country
Iraq
Degree
Master
Degree Date
2011
English Abstract
The preparation of (CuInSeTe CuInSSe and CuInSTe) thin films at different substrates temperatures (303, 373 and 423) K with average thickness (700±8) nm have been performed by thermal evaporation technique on glass substrate and under vacuum of 10-5 mbar with rate of deposition 25nm/sec.
The structures of (CuInSeTe CuInSSe and CuInSTe,) bulk and films have been studied by X–ray diffraction technique.
The result reveals that the prepared alloys and thin films which were deposited at both substrate temperatures (373and 423) K have polycrystalline structures whereas as deposited thin films are amorphous.
The optical measurement shows that the (CuInSeTe CuInSSe and CuInSTe) films have direct energy gap and the energy gap (Eg opt) increases with the increase of substrate temperatures for all samples.
Also the optical constants such as refractive index (n), extinction coefficient (k) and dielectric constant (εr, εi) have been calculated.
Resistivity and Hall Effect measurements show that of (CIS'T, CIS'S and CIST) thin films is p-type semiconductors, the concentration of charge carriers, D.C conductivity decreases with increasing of depositing temperature.
The capacitances at reverse bias of (CuInSeTe/CdS CuInSSe/CdS, and CuInSTe/CdS) heterojunction are measured at frequency (10 KHz, 100 KHz and 1 MHz) the measurements indicate that all heterojunction are abrupt.
The capacitance decreases with increasing the reverse bias voltage, and substrates temperatures, while the built–in voltage value decrease with the increase of substrates temperatures.
Main Subjects
No. of Pages
81
Table of Contents
Table of contents.
Abstract.
Abstract in Arabic.
Chapter One : Introduction and theoretical part.
Chapter Two : Experimental Part.
Chapter Three : Results and discussion.
References.
American Psychological Association (APA)
Umran, Duaa Adil. (2011). Characterization of (CuInSeTe, Cuisse and CuInSTe) CdS heterojunction. (Master's theses Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-606404
Modern Language Association (MLA)
Umran, Duaa Adil. Characterization of (CuInSeTe, Cuisse and CuInSTe) CdS heterojunction. (Master's theses Theses and Dissertations Master). University of Baghdad. (2011).
https://search.emarefa.net/detail/BIM-606404
American Medical Association (AMA)
Umran, Duaa Adil. (2011). Characterization of (CuInSeTe, Cuisse and CuInSTe) CdS heterojunction. (Master's theses Theses and Dissertations Master). University of Baghdad, Iraq
https://search.emarefa.net/detail/BIM-606404
Language
English
Data Type
Arab Theses
Record ID
BIM-606404
