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Technology path to the industrial production of highly efficient and thin c-Si solar cells

 
: Preu, R.; Biro, D.; Emanuel, G.; Grohe, A.; Hofmann, M.; Huljic, D.M.; Reis, I.E.; Rentsch, J.; Schneiderlöchner, E.; Sparber, W.; Wolke, W.; Willeke, G.

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Preprint urn:nbn:de:0011-n-342065 (1.2 MByte PDF)
MD5 Fingerprint: 91f9b19ee2b654db5ecd4b960f144104
Erstellt am: 26.10.2012


Kurokawa, K. ; Institute of Electrical and Electronics Engineers -IEEE-:
3rd World Conference on Photovoltaic Energy Conversion 2003. Proceedings. Vol.B : Joint conference of 13th PV Science & Engineering Conference, 30th IEEE PV Specialists Conference, 18th European PV Solar Energy Conference ; Osaka International Congress Center "Grand Cube", Osaka, Japan, 11 - 18 May 2003
Osaka, 2003
ISBN: 4-9901816-1-1
S.1451-1454
World Conference on Photovoltaic Energy Conversion (WCPEC) <3, 2003, Osaka>
PV Science and Engineering Conference <13, 2003, Osaka>
PV Specialists Conference <30, 2003, Osaka>
European PV Solar Energy Conference <18, 2003, Osaka>
Englisch
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()

Abstract
Higher efficiencies and thinner wafers are the most prominent approaches in solar cell technology to significantly reduce the Wp-price. Plasma etching, dielectric passivation, fast thermal and laser processing have been identified as key technologies to reach these targets. This paper gives an up-to-date overview of the achievements in improving and upscaling these technologies at Fraunhofer ISE. A complete dry and inline solar cell process with a textured front and passivated surfaces is proposed. A key to this process is the laser fired contact technology, which has been successfully transferred to a new system, enabling laser process times of just a few seconds while maintaining efficiencies of 21% on high-efficiency cell structures. In-line diffusion using the walking string transport yields higher carrier lifetimes in comparison to the standard metal belt systems enabling highly-efficient cell processing.

: http://publica.fraunhofer.de/dokumente/N-34206.html