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The optical parameters and photoconductivity of CdxIn1Se9−x chalcogenide thin films

✍ Scribed by A. Abdel-Aal

Book ID
103886836
Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
270 KB
Volume
392
Category
Article
ISSN
0921-4526

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✦ Synopsis

An investigation of the optical properties of amorphous thin films of Cd x In 1 Se 9Àx alloy (x ¼ 1-5 at%) prepared by the thermal evaporation technique was carried out. The different optical parameters of thin films were studied by the transmission and reflection measurements at normal incidence. The absorption data revealed the existence of allowed indirect and allowed direct transitions. The spectral behavior of the refractive index (n) shows anomalous dispersion in wavelength corresponding to energy (2-3 eV), while for higher wavelengths, it shows normality dispersion for all compositions in agreement with the amorphous films. The single oscillator strength S o and its position l o were determined and absorption properties in the band-to-band range were studied. Photosensitivity and photoconductivity properties of Cd x In 1 Se 9Àx thin films were reviewed.

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