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Investigation of rapid thermal firing for high efficiency of large area multi-crystalline Si solar cells

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4 Author(s)
Nakatani, M. ; Nakatsugawa Works, Mitsubishi Electr. Corp., Itami ; Karakida, Shoichi ; Morikawa, H. ; Arimoto, S.

We have developed a simplified mass-production process for high efficiency polycrystalline Si solar cells. In this paper, we review some of the important fundamental results to contribute to high efficiency for simplified process. As a new attempt to get high efficiency, we tried to rapid firing of the silver paste instead of the ordinary slow firing. As a result of optimization of peak firing temperature, keeping time at the peak temperature, heating rate and cooling rate, rapid-firing cell produced about 0.4% higher absolute efficiency than the conventional slow firing cell. This viewpoints shows that 17% efficiency will be expected in the mass-production line when further brushing up of each process without increasing process steps and adding expensive equipments

Published in:

Photovoltaic Energy Conversion, Conference Record of the 2006 IEEE 4th World Conference on  (Volume:1 )

Date of Conference:

May 2006

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