Universität Würzburg, Institut für Organische Chemie und Röntgen Research Center for Complex Material Systems, Am Hubland, 97074 Würzburg, Germany.
Chemistry. 2010 Aug 16;16(31):9366-73. doi: 10.1002/chem.201001153.
The common approach in organic materials science is dominated by the perception that the properties of the bulk materials are virtually determined by the properties of the molecular building blocks. In this Concept Article, we advocate for taking into account supramolecular organization principles for all kinds of organic solid-state materials, irrespective of them being crystalline, liquid crystalline, or amorphous, and discuss a showcase example, that is, the utilization of merocyanine dyes as p-type organic semiconductors in bulk heterojunction (BHJ) solar cells. Despite their extraordinarily large dipole moments, which are considered to be detrimental for efficient charge carrier transport, BHJ organic photovoltaic materials of these dyes with fullerenes have reached remarkable power conversion efficiencies of meanwhile nearly 5%. These at the first glance contradictory properties are, however, well-understandable on the systems chemistry level.
在有机材料科学中，一种常见的方法是基于这样一种观念，即大块材料的性能几乎完全由分子构建块的性能决定。在这篇概念文章中，我们主张考虑各种有机固态材料的超分子组织原则，而不论它们是结晶的、液晶的还是无定形的，并讨论了一个展示性的例子，即使用甲川花菁染料作为体异质结 (BHJ) 太阳能电池中的 p 型有机半导体。尽管这些染料的偶极矩非常大，这被认为不利于有效载流子输运，但这些染料与富勒烯的 BHJ 有机光伏材料的功率转换效率却达到了惊人的近 5%。然而，在系统化学层面上，这些乍一看相互矛盾的性质是可以很好理解的。
