205% efficient silicon solar cell with a low temperature rear side process using laser-fired contacts

The paper presents a rear side structure for crystalline silicon solar cells, which is processed at a maximum temperature of 220 deg C. Using two different material compositions for electrical and optical needs, the layer system has excellent passivation properties, enhances light trapping and allow...

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Bibliographic Details
Published in:Progress in photovoltaics 2006-11, Vol.14 (7), p.653-662
Main Authors: Brendle, W, Nguyen, V X, Grohe, A, Schneiderlochner, E, Rau, U, Palfinger, G, Werner, J H
Format: Article
Language:English
Online Access:Get full text
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Summary:The paper presents a rear side structure for crystalline silicon solar cells, which is processed at a maximum temperature of 220 deg C. Using two different material compositions for electrical and optical needs, the layer system has excellent passivation properties, enhances light trapping and allows for a good ohmic contact. With this structure we achieve an independently confirmed conversion efficiency =20*5% on a 250 m thick silicon solar cell. Due to the fact that the maximum process temperature is 220 deg C, this layer system enables new solar cell concepts.
ISSN:1062-7995
1099-159X
DOI:10.1002/pip.696