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19.9 % efficient bifacial n-type solar cell produced by co-diffusion-cobin

: Rothhardt, P.; Meier, S.; Jiang, K.; Wolf, A.; Biro, D.

Fulltext urn:nbn:de:0011-n-3112906 (151 KByte PDF)
MD5 Fingerprint: 6f1ab579873ac4b5f883f48cb48e97a8
Created on: 5.11.2014

Bokhoven, T.P. ; European Commission:
29th European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2014 : Proceedings of the international conference held in Amsterdam, The Netherlands, 22 - 26 September 2014, DVD
München: WIP, 2014
ISBN: 3-936338-34-5
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <29, 2014, Amsterdam>
Conference Paper, Electronic Publication
Fraunhofer ISE ()
PV Produktionstechnologie und Qualitätssicherung; Silicium-Photovoltaik; Dotierung und Diffusion; Oberflächen: Konditionierung; Passivierung; Lichteinfang; Kontaktierung und Strukturierung; n-type; bifacial; Co-Diffusion

We present co-diffused bifacial n-type solar cells (CoBiN) with peak efficiencies of 19.9 %. The codiffusion process is based on a high temperature step in an atmosphere containing POCl3 and a BSG/SiOx layer stack deposited by atmospheric pressure chemical vapor deposition. Secondary ion mass spectroscopy measurements show that the reaction of POCl3 with the SiOx layer results in the formation of a PSG layer converting a fraction of the SiOx layer. Electrochemical capacitance voltage measurements do not detect an influence of POCl3 on the boron emitter.