Characterization of SnO2 and ITO thin films repaired by chemical spray pyrolysis
Other Title(s)
المميزات الأغشية SnO2 و ITO الرقيقة المحضرة بالرش الكيمياوي الحراري
Dissertant
Thesis advisor
University
Salahaddin University-Hawler
Faculty
College of Science
Department
Physics Department
University Country
Iraq
Degree
Master
Degree Date
2010
English Abstract
Highly transparent and conductive thin films of SnO2 and In 2O3 : Sn (ITO) have been prepared on glass substrates using the simple spray pyrolysis method.
The SnO2 deposited at different substrate temperatures (500, 450, 400) (C) their thickness was approximately 700 nm, and for ITO at different thickness (550, 750 nm) at substrate temperature 525 0C.
The structural, optical and electrical properties for all films were studied.
The X-ray diffraction data showed that all films have polycrystalline nature (tetragonal for SnO2 and cubic for ITO) with major reflex along (11) plane for SnO2 and (4 00) plane for ITO The absorbance and transmittance spectra data for the films were recorded at room temperature in the wavelength range (300-900 nm), which were used to determine the optical properties of the films.
All films are highly transparent (greater than 80 %) in visible region of electromagnetic spectrum, the direct band gap was in the range (4.01 - 4.07 eV), (3.88-3.885 eV), and indirect band gap (3.81-3.90 eV), (3.71-3.72 eV) for SnO2 and ITO respectively, while the refractive index at wave length 650 nm was found to be in the range (1.81-1.98) for SnO2 and (1.98-1.99) for ITO.
The extinction coefficient was found to be about 10-2 in visible region for SnO2 and ITO.
The SnO2 film deposited at 400 0C exhibited lowest resistivity (2.8 × 10-4 Ω.cm 2-10 * 2.2) Ω.cm), while the lowest resistivity for ITO was) at thickness 750 nm.
Conductivity dependence of the temperature for the prepared films was also investigated and it was found that the samples exhibit no change in conductivity by increasing temperature range (308 K) especially for films deposited at higher substrate temperature.
Main Subjects
Topics
No. of Pages
53
Table of Contents
Table of contents.
Abstract.
Chapter One : general introduction.
Chapter Two : experimental details.
Chapter Three : results and discussions.
Chapter Four : conclusions and suggestions.
References.
American Psychological Association (APA)
Yunus, Hiwa Mukhlis. (2010). Characterization of SnO2 and ITO thin films repaired by chemical spray pyrolysis. (Master's theses Theses and Dissertations Master). Salahaddin University-Hawler, Iraq
https://search.emarefa.net/detail/BIM-310593
Modern Language Association (MLA)
Yunus, Hiwa Mukhlis. Characterization of SnO2 and ITO thin films repaired by chemical spray pyrolysis. (Master's theses Theses and Dissertations Master). Salahaddin University-Hawler. (2010).
https://search.emarefa.net/detail/BIM-310593
American Medical Association (AMA)
Yunus, Hiwa Mukhlis. (2010). Characterization of SnO2 and ITO thin films repaired by chemical spray pyrolysis. (Master's theses Theses and Dissertations Master). Salahaddin University-Hawler, Iraq
https://search.emarefa.net/detail/BIM-310593
Language
English
Data Type
Arab Theses
Record ID
BIM-310593
