Light scattering at textured back contacts for n-i-p thin-film silicon solar cells

The angular resolved light scattering at textured back contacts for n-i-p thin-film silicon solar cells is investigated experimentally in air. These results are compared to simulations performed by a scalar model for reflection with excellent agreement. Furthermore, light scattering is modeled for t...

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Bibliographic Details
Published in:	Journal of applied physics 2012-04, Vol.111 (8), p.083101-083101-5
Main Authors:	Bittkau, K, Böttler, W, Ermes, M, Smirnov, V, Finger, F
Format:	Article
Language:	eng
Subjects:	Light scattering Mathematical models Photovoltaic cells Reflection Silicon Solar cells Surface layer Texture Thin films
Online Access:	Get full text
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Summary:	The angular resolved light scattering at textured back contacts for n-i-p thin-film silicon solar cells is investigated experimentally in air. These results are compared to simulations performed by a scalar model for reflection with excellent agreement. Furthermore, light scattering is modeled for the transmission and reflection inside the silicon solar cell. It is found that the reflection at the back contact dominates the light scattering in the absorber layer. From these simulations, a quantity is derived that successfully predicts the external quantum efficiencies of solar cells on different textures.
ISSN:	0021-8979 1089-7550