Charge separation at nanostructured molecular donor-acceptor interfaces

有机供体和受体分子代表了一类重要的太阳能转换材料。本计画的重点是联合收割机四个小组的专业知识，以解决激子太阳能电池中薄膜和界面形态与光电性质之间的相关性。在第一个资助期内研究了各种不同的原型供体/受体对之后，在项目的第二阶段，我们将把精力集中在选定的、特别有前途的D/A组合上。这种多边方法的目标是开发一个详细的了解结构和电子性能，微观传输现象和宏观参数之间的相关性决定太阳能电池的性能为不同的原型的供体-受体对。这方面的知识将使我们能够控制薄膜的生长与有利的条件，激子和电荷传输的施主和受主相和有效的电荷分离和提取在所涉及的接口。从平面异质结，我们现在将进行到更复杂的结构，包括叉指有机/有机界面和本体异质结，以实现这一目标。我们的工作是共同努力，通过将互补的能力整合到一个联合项目中，调查和关联各个材料及其组合的各个方面。

Organic donor and acceptor molecules represent an important class of materials for solar energy conversion. The focus of this project is to combine the expertise of four groups to address the correlation between film and interface morphology and the photoelectrical properties in excitonic solar cells. Having investigated a variety of different prototypical donor/acceptor pairs during the first funding period, in this second phase of the project we will focus our efforts on selected, particularly promising D/A combinations. The goal of this multilateral approach is to develop a detailed understanding of the correlation between structural and electronic properties, microscopic transport phenomena and macroscopic parameters determining solar cell performance for different prototypes of donor-acceptor pairs. This knowledge will enable us to control the growth of films with favourable conditions for exciton and charge transport in both the donor and acceptor phase and efficient charge separation and extraction at the involved interfaces. From planar heterojunctions we will now proceed to more complex structures, including interdigitated organic/organic interfaces and bulk heterojunctions to achieve this goal. Our work is a concerted effort to investigate and correlate various aspects of the individual materials and their combinations by bringing complementary competencies together in a joint project.