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Solar cells with efficiencies above 21 % processed from Czochralski grown silicon

: Knobloch, J.; Glunz, S.W.; Biro, D.; Warta, W.; Schäffer, E.; Wettling, W.

Volltext urn:nbn:de:0011-px-341502 (362 KByte PDF)
MD5 Fingerprint: debb83f19d897538c07dd661d4b31fb5
Erstellt am: 9.11.2012

Institute of Electrical and Electronics Engineers -IEEE-:
25th IEEE Photovoltaic Specialists Conference 1996. Proceedings
Washington, DC, 1996
Photovoltaic Specialists Conference <25, 1996, Washington/DC>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()

Czochralski-Si (Cz-Si) of several manufacturers and with resistivities ranging from 1 to 13 Omega cm were processed into solar cells with efficiencies higher than 20% (AM1.5) using the LBSF/PERL processing sequence. The highest efficiency was 21.7%. The investigation of high efficiency Cz-Si solar cells was augmented by computer simulation and a study of the carrier lifetime before and after processing. A small degradation of solar cell performance in the lower resistivity material is discussed. Furthermore, a much simpler processing sequence is presented revealing efficiencies well above 19% on Cz-silicon and 21% on float zone-silicon.