- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
Annealing effect on the optical energy gap of (CdTe) thin films | ||
| Diyala Journal For Pure Science | ||
| Article 1, Volume 7, Issue 3, 2011, Pages 205-213 | ||
| Authors | ||
| Ali H. Resan; Rushdee A. Jaseem; Mohamad H. Abdullah | ||
| Abstract | ||
| Cadmium telluride thin films deposited by Co-evaporation technique on glass substrates. UV-VIS absorption data of films grown at room substrate temperature, as well as to the annealing thin films at the temperatures (373,473,573) K. The absorption coefficient α and optical energy gap Eg of the films obtained from the absorption data are measured in the strong absorption regime (300-1100) nm. Both the allowed direct and indirect optical transitions occur in CdTe thin films. The optical energy gaps for thin films deposited at room temperature that are associated with allowed direct and indirect interband transitions are 2.75 and 1.45 eV respectively. It observed that there is an increase in optical energy gap with increase in annealing temperatures. | ||
| Keywords | ||
| Cadmium telluride; thin films; absorption coefficient; Energy gap; annealing; CdTe | ||
|
Statistics Article View: 175 PDF Download: 56 |
||