AN INNOVATIVE MULTIPLE PULSE REVERSE BIAS MENDING TECHNIQUE FOR THIN FILM SOLAR CELL MODULES

摘要

The invention relates to a process for burning the shunt paths generated in the manufacture of thin film solar cell modules, being manufactured by carrying-out the steps of depositing on a clean glass substrate a transparent conducting oxide (TCO) layer followed by patterning the TCO-layer by laser scriber; loading the patterned TCO-substrate into a vacuum deposition chamber, depositing semiconductor layers on the substrate inside the vacuum deposition chamber; and depositing a metal layer which is patterned adapting a masking and etching technique, the process for burning the shunt-paths generated during the manufacturing steps of the modules, comprising the steps of disposing a plurality of probes on the modules such that the probes are enabled to contact the positive and negative contacts of a cell; applying a fixed forward bias voltage across the tips of the probes corresponding to that of a double-junction amorphous silicon cell;measuring the leakage current of the forward bias in the cell; and changing the mode of the pulses from forward to reverse bias pulses without removing the probes from the module, if the leakage current exceeds a predetermined value.