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  Greiner, D.; Lauche, J.; Heinemann, M.D.; Hinrichs, V.; Stange, H.; Allaf Navirian, H.; Kalus, C.; Schlatmann, R.; Kaufmann, C.A.: Influence of Residual Gas Composition and Background Pressure in a Multi-Stage Co-evaporation Chamber on the Quality of Cu(In,Ga)Se₂ Thin Films and Their Device Performance. In: 2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC) IEEE, 2016. - ISBN 978-1-5090-2724-8 , p. 1151 - 1156

10.1109/PVSC.2016.7749795
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