Abstract

Considering the influence of surface plasmons of the silver nano-layer, the spectrum characteristics of Si/Ag/Si nano-composite film structure are obtained and discussed. The transmittance and reflectivity of incident light at the interfaces, are analyzed as functions of the light wavelength and its incident angle. The results show that the transmittance profiles are decided by light wavelength, its incident angle and the silver nano-layer thickness. When the incidence angle θ of the light beam is 30°, 45°, 60°, respectively, and silver layer thickness d 2 =10nm, the reflectivity and transmittance as a function of incident light wavelength at the interface are presented. The transmittance Tr(λ) spectra are almost coincident with the solar spectrum., desired to improve the photocurrent conversion efficiency of silicon film solar cell.

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