Charge separation at nanostructured molecular donor-acceptor interfaces

纳米结构分子供体-受体界面的电荷分离

• 批准号: 65983783
• 负责人: Professor Dr. Wolfgang Brütting
• 金额: --
• 依托单位: Arbeitsgruppe Supramolekulare Systeme
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/65983783?language=en
• 关键词: Charge; separation; nanostructured; molecular; donor

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.

有机给体和受体分子是一类重要的太阳能转换材料。这个项目的重点是结合四个小组的专业知识来解决激子太阳能电池中薄膜和界面形态与光电性能之间的关系。在第一个资助期调查了各种不同的原型供体/受体对后，在这个项目的第二阶段，我们将把我们的努力集中在选定的、特别有希望的D/A组合上。这种多边方法的目标是详细了解不同原型的施主-受主对的结构和电子性质、微观输运现象和决定太阳能电池性能的宏观参数之间的关系。这一知识将使我们能够控制薄膜的生长，使其在施主和受主相中都具有激子和电荷传输的有利条件，并在相关的界面上有效地分离和提取电荷。我们现在将从平面异质结到更复杂的结构，包括交叉型有机/有机界面和体相异质结来实现这一目标。我们的工作是通过在一个联合项目中将互补的能力聚集在一起，共同努力调查和关联个别材料及其组合的各个方面。