FABRICATION OF LOW COST FLEXIBLE SOLAR CELLS USING SOLUTION-BASED COATING TECHNIQUES SOLUTION-BASED COATING TECHNIQUESAuthors: Joseph Weiss, Peter Kariuki, Jasper Chiguma, Jessica Gendron, Babak Arfaei, Peter Borgesen, and Wayne Jones
Company: Binghamton University
Date Published: 10/24/2010 Conference: SMTA International
Test cells were produced by spin coating and subsequent scale-up to R2R compatibility was achieved by redesign and transitioning to stencil printing, screen printing, or slot die coating. Systematic process development, including optimization of wetting behavior through surface treatment and adaptation of material rheology, was employed for each approach before comparing them. Manufacturability and efficiency were balanced through the design of cells as parallel stripes, deposited in a staggered fashion to provide for serial connection. Special consideration is given to the compatibility of a manufacturing approach with the need for rapid protection of newly produced cells by lamination. The performances of cells produced in various experiments were also tracked over time to account for relative reliability. Preliminary results are presented and the strengths and limitations of alternative approaches to manufacturing are discussed.
Key words: flexible electronics, solar cells, solution coating
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