AUTHOR=Adam Getachew , Munkhbat Battulga , Denk Patrick , Ulbricht Christoph , Hrelescu Calin , Scharber Markus C. TITLE=Different Device Architectures for Bulk-Heterojunction Solar Cells JOURNAL=Frontiers in Materials VOLUME=3 YEAR=2016 URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2016.00039 DOI=10.3389/fmats.2016.00039 ISSN=2296-8016 ABSTRACT=

We report different solar cell designs which allow a simple electrical connection of subsequent devices deposited on the same substrate. By arranging the so-called standard and inverted solar cell architectures next to each other, a serial connection of the two devices can easily be realized by a single compound electrode. In this work, we tested different interfacial layer materials, such as polyethylenimine and PEDOT:PSS, and silver as a non-transparent electrode material. We also built organic light-emitting diodes applying the same device designs demonstrating the versatility of applied layer stacks. The proposed design should allow the preparation of organic bulk-heterojunction modules with minimized photovoltaically inactive regions at the interconnection of individual devices.