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Effect of In incorporation on optical properties of amorphous Se–Ge thin films

✍ Scribed by V. Pandey; S.K. Tripathi; A. Kumar

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
171 KB
Volume
388
Category
Article
ISSN
0921-4526

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✦ Synopsis

Measurements of optical properties have been made on alloyed samples of Se and Ge with In prepared under vacuum by quenching the melt into water. The optical transmission spectra of film Se 90 Ge 10Àx In x (x ¼ 2, 4 and 6) were measured in the wavelength range 400-2000 nm by spectrophotometer. It is observed from optical transmission measurements that optical energy gap (E g ) decreases with In content. It is also found that refractive index (n), real dielectric constant (e 0 ) decreases with wavelength (l) while extinction coefficient (k), imaginary dielectric constant ( 00 ) increases with wavelength (l). The absorption coefficient (a) increases with photon energy (hn).

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