Electrical Resistivity, Thermoelectric Power and I-V Characteristics of Sb-Se Thin Films at Different Compositions
U. P. Shinde1, R. S. Gosavi2

1U. P. Shinde*, Dept. of Electronic Science, L.V.H. Art’s, Science & Commerce College, Panchavati, Nashik, (M.S.), India.
2R. S. Gosavi, Dept. of Electronic Science, Art’s, Science & Commerce College, Rahuri, Dist. Ahmednagar- 413705 (M.S.), India.
Manuscript received on April 20, 2020. | Revised Manuscript received on April 30, 2020. | Manuscript published on May 10, 2020. | PP: 894-896 | Volume-9 Issue-7, May 2020. | Retrieval Number: G5717059720/2020©BEIESP | DOI: 10.35940/ijitee.G5717.059720
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Sb-Se thin films of varying composition have been deposited on glass substrates at room temperature. These films were annealed at temperature interval of 50 0K. The electrical resistivity (ρ) and thermoelectric power (α) of same films were measured. The resistance of semiconducting films decreases rapidly on heating showing negative temperature coefficient of resistance (T.C.R.). The composition dependent resistivity shows exponential change, sharp fall of resistivity may be attributed due to increase of metallic ‘Sb’ in Sb-Se thin films. The composition dependent activation energy of Sb-Se thin films has been calculated. The activation energy (∆E) of semiconducting films was found to increase with selenium concentration. For different compositions thermoelectric power (α) increases upto 70 at. wt.% of Se concentration and then slowly decreases. The I-V characteristics of Sb-Se thin films were measured using copper (Cu) contacts. The films show ohmic conduction for different applied voltages as well as various concentrations of Selenium (Se) in Sb-Se thin films.
Keywords: Sb-Se, substrate, composition, thin films, resistivity, activation energy. thermoelectric power, Voltage.
Scope of the Article: Economics of Energy Harvesting Communications