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The Optical Properties of (CuInSTe) Thin Films | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 22, Issue 5, 2011, Pages 211-221 | ||
| Author | ||
| Bushra A.Hassan | ||
| Abstract | ||
| Optical properties of (CuInSTe) thin films with different thickness (300, 500, and 700nm) prepared under vacuum at room temperature. The optical transmission spectrums of films of quaternary thin film (CuInTeS) aremeasured in the wavelength range (950–1400 nm) by spectrophotometer. It is observed that refractive index (n), real dielectric constant (ε1), extinction coefficient (k), imaginary dielectric constant (ε2) increase with the increasing of thickness and decrease with increasing of wavelength (λ). The absorption coefficient (α) increases with photon energy (hν). It is found that the optical energy gap (Eg) of (CuInSTe) thin films decreases but then increases with increasing of sample thickness. The results are explained in terms of variation of the transmittance of the prepared samples with thickness. | ||
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