Pan Pacific Symposium Conference Proceedings


SOLAR CELLS ON ULTRA-THIN CRYSTALLINE SILICON

Authors: Robert Mertens, Ph.D.
Company: IMEC & K.U.Leuven
Date Published: 1/26/2010   Conference: Pan Pacific Symposium


Abstract: Possible avenues for cost reduction of crystalline silicon photovoltaics are reviewed. Driving forces in this process are the use of less grams of Si per Wp and the reduction of the manufacturing cost. A possible crystalline Si PV roadmap as viewed by IMEC is discussed. Two important developments are treated in more detail. The first development deals with the stress-induced lift-off method (SLIM) for kerf-loss free wafering of ultra-thin (40 to 50 micron) crystalline Si foils. A second lift-off method to create even thinner (a few micron thick) Si foils is the empty space in Si method. Both techniques require new techniques for handling these ultra-thin Si foils and new assembly methods for the photovoltaic modules.

Key words: crystalline silicon, solar cells, cost reduction, road map.



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