An Investigation on the effect of substrate temperature on structural, electrical, thermoelectrical and optical properties of WO3 thin films prepared by spray pyrolysis method
Publish Year: 1393
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICNN05_867
تاریخ نمایه سازی: 30 آبان 1394
Abstract:
In this research work we deposited pure tungsten trioxide (WO3) thin film with various substratetemperatures (500, 400, 300 ºC) on glass substrates by spray pyrolysis technique. The FESEM images show that as thegrowth temperature has decreased the surface of the layers became more porous with more intertwined circular strings.Also the XRD spectra of the layers indicated that all grown samples have an amorphous nature. The Seebeck effect andI-V characteristics of the layers showed while all layers have n-type conductivity, the layer with the lower growthtemperature is more conductive than those grown at higher temperatures. These results are well-consistent with theoptical properties of the films including transmittance spectra also the trend of the band gap variations.
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Authors
Fatemeh Rahimi Jafari
Departmentof Physics, Shahrood University, Shahrood, Iran
Hosein Eshghi
Departmentof Physics, Shahrood University, Shahrood, Iran
Zohreh Ghorannevis
Department of Physics, Islamic Azad University of Karaj, Karaj, Iran