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The Role of Dopant Concentration on Conductivity and Mobility of CdTe Thin Films
Joint Authors
al-Shakily, F. Y.
al-Douri, A. A. J.
Alias, Maysoon F. A.
Alnajjar, Abdalla A.
Source
Advances in Condensed Matter Physics
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-06-25
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Films of CdTe pure and doped with various atomic percentages of Al and Sb (0.5, 1.5 & 2.5) were prepared, and their electrical properties were investigated.
The films were prepared by thermal evaporation on glass substrates at two substrate temperatures (Ts=RT & 423 K).
The results showed that the conduction phenomena of all the investigated CdTe thin films on glass substrates are caused by two distinct mechanisms.
Room temperature DC conductivity increases by a factor of four for undoped CdTe thin films as Ts increases and by 1-2 orders of magnitude with increasing dopant percentage of Al and Sb.
In general, films doped with Sb are more efficient than Al-doped films.
The activation energy (Ea2) decreases with increasing Ts and dopant percentage for both Al and Sb.
Undoped CdTe films deposited at RT are p-type convert to n-type with increasing Ts and upon doping with Al at more than 0.5%.
The carrier concentration decreases as Ts increases while it increases with increasing dopant percentage.
Hall mobility decreases more than three times as Al increases whereas it increases about one order of magnitude with increasing Sb percentage in CdTe thin films deposited at 423 K and RT, respectively.
American Psychological Association (APA)
al-Douri, A. A. J.& al-Shakily, F. Y.& Alnajjar, Abdalla A.& Alias, Maysoon F. A.. 2011. The Role of Dopant Concentration on Conductivity and Mobility of CdTe Thin Films. Advances in Condensed Matter Physics،Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-507452
Modern Language Association (MLA)
al-Douri, A. A. J.…[et al.]. The Role of Dopant Concentration on Conductivity and Mobility of CdTe Thin Films. Advances in Condensed Matter Physics No. 2011 (2011), pp.1-6.
https://search.emarefa.net/detail/BIM-507452
American Medical Association (AMA)
al-Douri, A. A. J.& al-Shakily, F. Y.& Alnajjar, Abdalla A.& Alias, Maysoon F. A.. The Role of Dopant Concentration on Conductivity and Mobility of CdTe Thin Films. Advances in Condensed Matter Physics. 2011. Vol. 2011, no. 2011, pp.1-6.
https://search.emarefa.net/detail/BIM-507452
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507452