Charge transfer at organic semiconductor hetero-interfaces: Towards a unified picture in intermediate cases of ground state and excited state scenarios

有机半导体异质界面的电荷转移：在基态和激发态场景的中间情况下获得统一的图像

• 批准号: 239543752
• 负责人: Professor Dr. Wolfgang Brütting
• 金额: --
• 依托单位: Institut für Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/239543752?language=en
• 关键词: Charge; transfer; organic; semiconductor; hetero

In this proposal, we study the charge transfer at organic semiconductor hetero-interfaces using the joint expertise of three groups. Our aim is to obtain a comprehensive understanding of the electronic processes and optical properties involved by combining complementary experimental techniques, including growth and structural studies, electrical transport investigations, optical spectroscopy and analysis of the electronic structure. Interaction between the involved molecules appear both in the ground state and after optical excitation. Suitable material combinations allowing for charge transfer across their mutual interfaces will be identified and the electronic properties of the resulting organic semiconductor heterostructures will be studied. The focus is on the degree of charge transfer, the binding energy and the anisotropy of the charge transfer state, as well as the shape of density of states.

在这个建议中，我们研究了电荷转移在有机半导体异质界面使用三个小组的联合专业知识。我们的目标是通过结合互补的实验技术，包括生长和结构研究，电输运研究，光谱学和电子结构分析，全面了解所涉及的电子过程和光学性质。在基态和光激发后，所涉及的分子之间的相互作用都出现。合适的材料组合允许电荷转移跨越其相互界面将被确定和所得的有机半导体异质结构的电子性质将被研究。重点是电荷转移的程度，结合能和电荷转移态的各向异性，以及态密度的形状。