Authors: Amal Aboulhassan, Daniel Baum, Markus Hadwiger
Abstract: Current characterization methods for the bulk heterojunction (BHJ) morphology ”the main material of recent organic photovoltaic solar cells” are limited to the analysis of global fabrication parameters. This reduces the efficiency of the BHJ design process, since it misses critical information about local performance indicators. Moreover, these approaches also do not help with intuitive analysis, which is widely adopted by the domain scientists. In this poster, we propose a novel application that fills this gap through visual characterization and exploration of one local performance indicator: charge transport bottlenecks. We propose a new intuition-based geometric model that correlates structural features with performance bottlenecks. Since our goal is to support the BHJ design, we assess the proposed model via its ability to extract correlations between features and bottlenecks. Moreover, we show that our approach can help reduce the BHJ analysis time from days to minutes.