Improvement of the Efficiency of Silicon Solar Cells by Electrochemical Passivation of High Leakage Current Areas in the pn-Junction

  1. Dr. K. Grassie2,
  2. Prof. Dr. E. Teuckhoff3,
  3. Prof. Dr. G. Wegner4,
  4. Prof. Dr. J. Hausselt5 and
  5. Prof. Dr. H. Hanselka6
  1. M. H. Al-Rifai,
  2. J. Carstensen and
  3. H. Föll

Published Online: 27 APR 2006

DOI: 10.1002/3527607420.ch46

Functional Materials, Volume 13

Functional Materials, Volume 13

How to Cite

Al-Rifai, M. H., Carstensen, J. and Föll, H. (2006) Improvement of the Efficiency of Silicon Solar Cells by Electrochemical Passivation of High Leakage Current Areas in the pn-Junction, in Functional Materials, Volume 13 (eds K. Grassie, E. Teuckhoff, G. Wegner, J. Hausselt and H. Hanselka), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607420.ch46

Editor Information

  1. 2

    Philips Forschungslaboratorium, Postfach 500145, 52085 Aachen, Germany

  2. 3

    Siemens AG, Postfach 3240, 91050 Erlangen, Germany

  3. 4

    Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany

  4. 5

    Forschungszentrum Karlsruhe, Postfach 3640, 76201 Karlsruhe, Germany

  5. 6

    Institut für Mechanik, Otto-von-Guericke-Universität Magdeburg, Universitätsplatz 2, 39160 Magdeburg, Germany

Author Information

  1. Faculty of Engineering, Christian-Albrechts University of Kiel, Kaiserstr. 2, D-24143 Kiel, Germany.http://www.techfak.uni-kiel.de/matwis/amat/

Publication History

  1. Published Online: 27 APR 2006
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527302543

Online ISBN: 9783527607426

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Keywords:

  • functional materials;
  • efficiency of silicon solar cells;
  • electrochemical passivation of high leakage current areas in the pn-junction

Summary

The efficiency of silicon solar cells can be strongly degraded by localized defects. Characterizing silicon solar cells locally by a new method (CELLO), problematic areas are detected and subsequently disconnected from the cell by cutting through grid and p-n-junction around the defect. Applying anodic bias to the solar cells in contact to a KOH electrolyte allows to completely passivate the surface states introduced by this procedure. Although the total area of the solar cell is decreased by this procedure, the efficiency of the complete solar cell can be increased.