Studying of the optical properties of poly (vinyl alcohol) films using aluminum sulphate as additive by measuring allowed direct transition energy gap
Other Title(s)
دراسة الخصائص البصريه لشرائح افلام بولي فينيل الكحول باستخدام مضافات كبريتات الالمنيوم عن طريق قياس فجوة الطاقه للانتقال المباشر
Author
Source
Issue
Vol. 8, Issue 1 (31 Mar. 2011), pp.103-109, 7 p.
Publisher
University of Baghdad College of Science for Women
Publication Date
2011-03-31
Country of Publication
Iraq
No. of Pages
7
Main Subjects
Topics
Abstract AR
تم فحص التغيير في فجوة الطاقة المحضورة و طاقة التنشيط قد تم فحصها لشرائح مركب PVA النقي و المشوب من خلال الامتصاص البصري للأطوال الموجية من (200-700) نانو ميتر و بدرجة حرارة تتغير بمعدل (25-140) مº.
إن فجوة الطاقة المحضورة تقل بزيادة تركيز ملح سلفات الألمنيوم و إن طاقة التنشيط للانتقال المباشر تم حسابها باستخدام طريقة Urbach-edges و وجد أنها تزداد بزيادة تركيز ملح سلفات الألمنيوم و تقل بزيادة درجة الحرارة.
Abstract EN
The change in the optical band gap and optical activation energy have been investigated for pure Poly (vinyl alcohol)and Poly (vinyl alcohol) doped with Aluminum sulphate to proper films from their optical absorption spectra.
The absorption spectra were measured in the wave range from (200-700) nm at temperature range (25-140) 0C.
The optical band gap (Eg) for allowed direct transition decreases with increase the concentration of Aluminum sulphate.
The optical activation energy for allowed direct transition band gap was evaluated using Uriah- edges method.
It was found that ∆E increases with increasing the concentration of Al2 (SO4)3 and decreases when temperature increases.
American Psychological Association (APA)
Allush, Athir H.. 2011. Studying of the optical properties of poly (vinyl alcohol) films using aluminum sulphate as additive by measuring allowed direct transition energy gap. Baghdad Science Journal،Vol. 8, no. 1, pp.103-109.
https://search.emarefa.net/detail/BIM-268608
Modern Language Association (MLA)
Allush, Athir H.. Studying of the optical properties of poly (vinyl alcohol) films using aluminum sulphate as additive by measuring allowed direct transition energy gap. Baghdad Science Journal Vol. 8, no. 1 (2011), pp.103-109.
https://search.emarefa.net/detail/BIM-268608
American Medical Association (AMA)
Allush, Athir H.. Studying of the optical properties of poly (vinyl alcohol) films using aluminum sulphate as additive by measuring allowed direct transition energy gap. Baghdad Science Journal. 2011. Vol. 8, no. 1, pp.103-109.
https://search.emarefa.net/detail/BIM-268608
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 108-109
Record ID
BIM-268608