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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.11 [2004] >
IJEMS Vol.11(3) [June 2004] >
| Title: | Optical band gap of Bi2Te2.8Se0.2 thin films |
| Authors: | Soni, P H
Otia, J R
Desai, C F |
| Issue Date: | Jun-2004 |
| Publisher: | CSIR |
| IPC Code: | Int. Cl.7 H01 L 29/18 |
| Abstract: | Bi2Te2.8Se0.2 thin films were grown using
the thermal evaporation technique on a (001) face of NaCl crystal as a substrate
at room temperature. The optical absorption was measured in the wave number
range 500-4000 cm-1. From the optical absorption data the band gap
has been evaluated and studied as a function of the film thickness and
deposition temperature. The data indicate absorption through direct interband
transition with a band gap of around 0.24 eV. |
| Page(s): | 221-223 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.11(3) [June 2004]
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