Q-Cells Se

Jörg Isenberg

Jörn Suthues

Jean Patrice Rakotoniaina

Jörg Müller

Martin Bivour

The invention relates to a method and device for characterizing wafers during the production of solar cells. Characterizing wafers includes a) providing a wafer and carrying out a production process with the wafer for producing a solar cell or a plurality of solar cells; b) carrying out a wet chemical step with the wafer during the production process, wherein the wet chemical step decreases an influence of the wafer surface on a lifetime of charge carriers in the wafer; c) irradiating the wafer with light for creating the charge carriers in the wafer during the wet chemical step or after the wet chemical step; d) determining the lifetime of the charge carriers created in step c); and e) characterizing the wafer by means of the lifetime determined in step d).

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Leipzig, Germany

Jörg Isenberg