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

Physics

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