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Up-Scaling of Production Process for Producing Flexible CZTS Photovoltaic Modules
G. Peharz, C. Waldauf, D. Meissner, R. Hüttenbrenner, A. Grader, V. Satzinger, S. Edinger, T. Dimopoulos, E.J. List-Kratochvil, S. Sax, G. Oreski, S. Pötz, A. Neisser
Fabrication, Polymer Film, CZTS
Subtopic: CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells and Modules
Event: 31st European Photovoltaic Solar Energy Conference and Exhibition
Session: 3AO.4.2
1006 - 1009
ISBN: 3-936338-39-6
Paper DOI: 10.4229/EUPVSEC20152015-3AO.4.2
0,00 EUR
Document(s): paper, presentation


At previous EU-PVSEC conferences an innovative technology for making photovoltaic foils was presented which is based on quaternary CZTS (copper zinc tin sulfide) semiconductor powder. In order to accelerate the development of a high speed roll-to-roll production process a cooperation project of several partners from academia and industry was launched in 2014. The overall aim of the project is the demonstration of a technology that allows producing flexible photovoltaic films made of abundant, non-toxic and highly stable material at a web speed of 40 m/min. For this purpose certain technological challenges needs to be tackled such as the development of a printing process which allows for the high speed deposition of a CTZS crystal mono-layer and the metallization in a roll-to-roll process. Furthermore the rear-side opening for contact formation requires a precise and fast “polishing” process of the polymer-semiconductor membrane preferably by a laser ablation process. Finally a process for depositing the TCO front side contact by non-vacuum techniques is developed. The current contribution describes the specification and definition phase of the processes to be used and highlights first successful proof-of-concept experiments. These results constitute important milestones towards the development of a high speed roll-to-roll process, which will enable the production of flexible PV films with a web speed of about 40 m/min and at production costs levels of about 0.30 €/Wp in a mass manufacturing scenario.