Study the effect of thickness on the electrical conductivity and optical constant of Co3O4 thin films
Other Title(s)
دراسة تأثير السمك في التوصيلية الكهربائية و الثوابت البصرية لأغشية Co3O4 الرقيقة
Author
al-Mayyali, Bushra Kazim Hassun
Source
Ibn al-Haitham Journal for Pure and Applied Science
Issue
Vol. 26, Issue 1 (30 Apr. 2013), pp.159-166, 8 p.
Publisher
University of Baghdad College of Education for Pure Science / Ibn al-Haitham
Publication Date
2013-04-30
Country of Publication
Iraq
No. of Pages
8
Main Subjects
Topics
Abstract AR
في هذا البحث حضرت أغشية أوكسيد الكوبالت (Co3O4) بطريقة الرش الكيميائي الحراري و عند أسماك مختلفة 20 nm ± (250, 350, and 550).
من خلال القياسات البصرية تبين أن لأغشية (Co3O4) فجوة طاقة مباشرة و تزداد قيمتها بصورة عامة بزيادة السمك.
و لقد حسبت الثوابت البصرية، مثل : معامل الامتصاص، و معامل الخمود، و ثابت العزل الكهربائي ضمن مدى الأطوال الموجية (300-900)nm.
و حسبت التوصيلية الكهربائية (∂) و طاقات التنشيط (Ea1, Ea2) لأغشية (Co3 O4) كدالة لتغير السمك.
و قد أظهرت الأغشية آليتين للانتقال الالكتروني و لوحظ زيادة التوصيلية الكهربائية مع نقصان طاقات التنشيط بزيادة سمك الأغشية المحضرة.
Abstract EN
In this research the Cobalt Oxide (Co3O4) films are prepared by the method of chemical spray pyrolysis deposition at different thicknesses such that (250, 350, 450, and 550) ± 20 nm.
The optical measurement shows that the Co3O4 films have a direct energy gap, and they in general increase with the increase of the thickness.
The optical constants are investigated and calculated such as absorption coefficient, refractive index, extinction coefficient and the dielectric constants for the wavelengths in the range (300-900) nm.
The electrical conductivity (σ) and the activation energies (Ea1, Ea2) have been investigated on (Co3O4) thin films as a function of thickness.
The films contain two types of transport mechanisms, and the electrical conductivity (σ) increases whereas the activation energy (Ea) would decrease as the films thickness increases.
American Psychological Association (APA)
al-Mayyali, Bushra Kazim Hassun. 2013. Study the effect of thickness on the electrical conductivity and optical constant of Co3O4 thin films. Ibn al-Haitham Journal for Pure and Applied Science،Vol. 26, no. 1, pp.159-166.
https://search.emarefa.net/detail/BIM-337064
Modern Language Association (MLA)
al-Mayyali, Bushra Kazim Hassun. Study the effect of thickness on the electrical conductivity and optical constant of Co3O4 thin films. Ibn al-Haitham Journal for Pure and Applied Science Vol. 26, no. 1 (Apr. 2013), pp.159-166.
https://search.emarefa.net/detail/BIM-337064
American Medical Association (AMA)
al-Mayyali, Bushra Kazim Hassun. Study the effect of thickness on the electrical conductivity and optical constant of Co3O4 thin films. Ibn al-Haitham Journal for Pure and Applied Science. 2013. Vol. 26, no. 1, pp.159-166.
https://search.emarefa.net/detail/BIM-337064
Data Type
Journal Articles
Language
English
Notes
Includes appendix : p. 163-165
Record ID
BIM-337064