2017/09/04 by Jacek Wojtkiewicz, Wojtkiewicz, Jacek, Marek Pilch +1 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Applied Physics (physics.app-ph) #Conducting polymers and applications #FOS: Physical sciences #Organic Electronics and Photovoltaics #Semiconductor materials and interfaces #physics.app-ph
paper · pdf · doi:10.48550/arxiv.1709.01048
arxiv created 2017/09/04 · openalex publication_date 2017/09/04 · arxiv updated 2017/09/05 · openalex created_date 2017/09/15 · openalex updated_date 2026/07/28
Polymer solar cells are considered as very promising candidates for development of photovoltaics of the future. They are cheap and easy to fabricate, however, up to now, they possess fundamental drawback, low effectiveness. In the most popular BHJ (bulk heterojunction) architecture the actual record of efficiency is about 13 percent. One ask the question how fundamental this limitation is. In our paper we propose the simple model which examines the limitations of efficiency by analysis of geometrical aspects of the BHJ architecture. In this paper we considered two dimensional model. We calculated the effective length of the donor-acceptor border in the random mixture of donor and acceptor nanocrystals and further compared it with an ideal comb architecture. It turns out that in the BHJ architecture, this effective length is about 2 times smaller than in the comb architecture.