Volume : 2, Issue : 1, January - 2013
Study of optical parameters of Chemical Bath deposited Cd1– xZnx S thin films
Ravangave L. S. , Biradar U. V.
Abstract :
The Chemical Bath Deposition Method (CBD) was employed for deposition of Cd1–xZnx S (x=0,.0, 0.2, 0.4, 0.6,0.8 1.0) thin films. The Chemically deposited Cd1–xZnx S thin films were characterized by using UV–Visible spectrophotometer. Transmission spectra show the blue shifting of absorption edge. The maximum 78% transmittance was observed in the x=0.8 composition. The reflection in the blue portion of the incident spectrum was decreased as the Zn content increased. The (αhυ)2 versus photon energy (hυ) curves shows tuning of band gap with Zn content. The observed band gap was 3.9 eV in the x=0.8 composition. The effect of composition on refractive index, absorption index and other optical dispersion parameters were also investigated. The calculated values of average excitation energy Eo approximately obey the empirical relation (Eo =1.2 Eg ) obtained from single oscillator model.
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Download PDF Journal DOI : 10.15373/2249555XCite This Article:
Ravangave L. S. ,Biradar U. V. Study of optical parameters of Chemical Bath deposited Cd1-xZnxS thin films Global Journal For Research Analysis, Vol: 2, Issue: 1 January 2013