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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
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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