Volume : V, Issue : XI, November - 2016

Annealing effect on electrical properties of CdS thin films by spray pyrolysis

Y. D. Tembhurkar

Abstract :

 Spray pyrolysis technique to prepare CdS thin films on glass substrate has been used. Semiconducting CdS thin films have been deposited onto a biological glass substrate at temperature 3000C and films annealed for one hour. SEM study revealed that the grain size increases as the films annealed. From Hot probe method, the material has been found to exhibit p–type conductivity. Semiconducting nature of the films is observed from the four–probe resistivity measurement for the temperature ranging from 300 K to 573 K. the activation energy values calculated as 0.045 eV and 0.94 eV for the temperature range 300 K to 450 K and 450 K to 573 K respectively. The Arrhenius plot shows shallow levels from cadmium or sulphur interstials are found to extrinsic conductivity near room temperature, where as deep strap states influence at higher temperature. The annealed films indicate that the atoms are arrange in the crystal in regular manner. The SEM study shows that grain size of the films increases as films annealed.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Y. D. Tembhurkar, Annealing effect on electrical properties of CdS thin films by spray pyrolysis, International Journal of Scientific Research, Volume : 5 | Issue : 11 | November 2016

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