Volume 6, 2015
|Number of page(s)||5|
|Published online||15 June 2015|
Grain boundary assisted photocurrent collection in thin film solar cells
1 Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
2 Weierstraß-Institut für Angewandte Analysis und Stochastik, Mohrenstr. 39, 10117 Berlin, Germany
Received: 25 February 2015
Accepted: 22 May 2015
Published online: 15 June 2015
The influence of absorber grain boundaries on the photocurrent transport in chalcopyrite based thin film solar cells has been calculated using a two dimensional numerical model. Considering extreme cases, the variation in red response is more expressed than in one dimensional models. These findings may offer an explanation for the strong influence of buffer layer preparation on the spectral response of cells with small grained absorbers.
© Harndt et al., published by EDP Sciences, 2015
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