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.

有机供体和受体分子代表了太阳能转换的一类重要材料。该项目的重点是结合四个小组的专业知识来解决薄膜和界面形态与激子太阳能电池光电特性之间的相关性。在第一个资助期间调查了各种不同的原型捐赠者/接受者对后，在项目的第二阶段，我们将把工作重点放在选定的、特别有前途的 D/A 组合上。这种多边方法的目标是详细了解结构和电子特性、微观输运现象和宏观参数之间的相关性，这些参数决定不同供体-受体对原型的太阳能电池性能。这些知识将使我们能够控制薄膜的生长，为供体和受体相中的激子和电荷传输提供有利的条件，并在相关界面处实现有效的电荷分离和提取。我们现在将从平面异质结转向更复杂的结构，包括叉指有机/有机界面和体异质结以实现这一目标。我们的工作是通过将互补的能力整合到一个联合项目中，共同努力调查和关联各种材料及其组合的各个方面。