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P. Bommersbach, L. Arzel, M. Tomassini, E. Gautron, C. Leyder, M. Urien, D. Dupuy and N. Barreau Influence of Mo back contact porosity on co-evaporated Cu(In,Ga)Se2 thin film properties and related solar cell Progress in Photovoltaics: Research and Applications 21

Version of Record online: 26 OCT 2011 | DOI: 10.1002/pip.1193

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The properties of the Mo back contact in Cu(In,Ga)Se2-thin film solar cell grown on soda-lime glass strongly impact the performance of the devices. This figure plots the cell parameters for different Mo porosity to sodium; the efficiency varies by 3 abs.% only by changing this back contact property. This evolution can be explained through the combination of improving J0 and decreasing Rsh with increasing Cu(In,Ga)Se2 sodium content.

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