Silicon ribbons for solar cells grown from powder by the SSP method

Author

Eyer, A. ; Räuber, A. ; Schillinger, N. ; Grabmaier, J.G.

Author_Institution

Fraunhofer Inst. fuer Solare Energiesysteme, Freiburg, West Germany

fYear

1988

fDate

1988

Firstpage

1565

Abstract

The design of a machine for semicontinuous production of 100-mm wide silicon ribbons is presented. As the grain selection takes place at the beginning of zone melting, continuous processing instead of single-sheet processing is reasonable and leads to fairly wide grains (on the order of 10-20 mm) extending over the whole length of the ribbon. Grain structure and defects are revealed by etching techniques. Due to the high intragrain defect density there is a significant effect of hydrogen passivation which is demonstrated by EBIC and LBIC measurements. The best solar cells made from silicon sheets from powder (SSP) material showed efficiencies above 13%.

Keywords

elemental semiconductors; semiconductor growth; silicon; solar cells; zone melting; 100 mm; 13 percent; EBIC; H passivation; LBIC; SSP method; Si ribbons; defects; etching; fairly wide grains; grain structure; high intragrain defect density; powder; semiconductor; semicontinuous production; single-sheet processing; solar cells; zone melting; Density measurement; Design methodology; Etching; Hydrogen; Passivation; Photovoltaic cells; Powders; Production; Sheet materials; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference, 1988., Conference Record of the Twentieth IEEE

Conference_Location

Las Vegas, NV, USA

Type

conf

DOI

10.1109/PVSC.1988.105973

Filename

105973