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1991 | 80 | 6 | 819-825
Article title

Optical Properties of Thermally Deposited Bismuth Telluride in the Wavelength Range of 2.5-10 µm

Content
Title variants
Languages of publication
EN
Abstracts
EN
The optical constants (the refractive index n, the absorption index k and the absorption coefficient α) of Bi_{2}Te_{3} thin films were determined in the wave-lenght range of 2.5 to 10 µm. The shape of the absorption edge in Bi_{2}Te_{3} thin films has been determined from transmittance and reflectance measurements. The edge is of the form expected for direct transition corresponding to E_{g} = 0.21 eV. The optical constants were used to determine the high frequency dielectric constant ε_{0} = 58, the optical conductivity σ =σ_{1} + σ_{2} as well as the volume and surface energy loss functions. All these parameters were used to get some information about the intraband and interband transitions.
Keywords
EN
Publisher

Year
Volume
80
Issue
6
Pages
819-825
Physical description
Dates
published
1991-12
received
1991-08-23
Contributors
author
  • Faculty of Education, Ain Shams University, Roxy, Egypt
author
  • Faculty of Education, Ain Shams University, Roxy, Egypt
author
  • Faculty of Girls, Ain Shams University, Roxy, Egypt
author
  • Faculty of Education, Ain Shams University, Roxy, Egypt
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv80z607kz
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