Temperature Dependence of the Optical Properties of a-si:H thin Films for Solar Cells
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Date
1996-06
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Addis Ababa University
Abstract
In the fundamental absorption region, near normal incidence reflectance Rand
transmittance T measurements can provide information about optical properties of thin films [1]
. Temperature dependent optical properties of p - , i - , n - layers of a-Si:H films have been
studied. The behavior of reflectance R and transmittance T as a function of temperature of
a-Si:H thin films is analyzed. From temperature dependence of Rand T the temperature
dependence of the absorption coefficent «(I.) is calculated using Hishikawa relation. From the
temperature dependent absorption coefficient, the variation of the optical energy gap of the films
with temperature is determined. Finally its effect on solar cell applications is discussed
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Keywords
Thin Films for Solar Cells