Design Rules for Donors in Bulk‐Heterojunction Solar Cells—Towards 10 % Energy‐Conversion Efficiency

作者：Marcus Scharber, D. Mühlbacher, Markus Koppe, Patrick Denk, Christoph Waldauf, A. J. Heeger, Christoph Josef Brabec · 发表于：Advanced Materials · 年份：2006 · DOI：10.1002/adma.200501717 · 被引用次数：5208 · 研究领域：Organic Electronics and Photovoltaics、Conducting polymers and applications、Semiconductor materials and interfaces

For bulk-heterojunction photovoltaic cells fabricated from conjugated polymers and a fullerene derivative, the relation between the open-circuit voltage (Voc) and the oxidation potential for different conjugated polymers is studied. A linear relation between Voc and the oxidation potential is found (see figure). Based on this relation, the energy-conversion efficiency of a bulk-heterojunction solar cell is derived as a function of the bandgap and the energy levels of the conjugated polymer.