Dynamics of exciton diffusion in organic semiconductor materials

技术：本项目旨在识别和更好地理解有机光伏材料中的激子扩散机制。该项目方法寻求使用稳态和超快光谱以及基于设备的结果进行激子扩散的相关研究。这些研究有望确定最有前途和最准确的激子扩散表征方法，并阐明分子结构和单三重态激子系统间交叉对激子扩散种类和机制的作用。后者将有助于澄清磷光材料在opv中可能发挥的潜在作用。非技术：该项目涉及与电子和光子学技术相关的材料科学主题领域的基础研究问题——该项目的基础科学发现有望对替代能源的开发提供重大帮助。此外，pi还优先考虑对小学、高中、本科生和研究生进行有关能源问题的教育，以及材料在可再生能源系统中可以发挥的作用。将开展多个项目，包括为3至12年级的学生提供教育推广，为高中生提供暑期研究经验，通过明尼苏达大学（UMN）本科研究机会计划（UROP）和MRSEC REU计划等项目为本科生提供研究机会。以及将研究成果整合到化学工程和材料科学与化学的本科和研究生课程中。pi还将通过UMN界面和材料工程研究工业伙伴关系（IPrime）向工业界传播拟议工作的结果，这为工业界的专业人士提供了与UMN研究人员合作的机会。pi通常帮助共同组织和参加IPrime年会，为学生提供向会员公司展示研究成果的机会。项目研究和教育活动对联合国大学内外的学生和更广泛社区的教育作出了重要贡献。

Technical: This project aims for identification and greater understanding of the exciton diffusion mechanism in organic photovoltaic materials. The project approach seeks to correlate investigations of exciton diffusion carried out using steady-state and ultrafast spectroscopies as well as device based results. These studies are expected to be able to identify the most promising and accurate means of characterizing exciton diffusion, and to also elucidate the role of molecular structure and singlet-triplet exciton intersystem crossing on the diffusing species and mechanism. The latter will assist in clarification of the potential role phosphorescent materials can play in OPVs. Non-technical: The project addresses basic research issues in a topical area of materials science with technological relevance in electronics and photonics--the basic scientific findings of the project are expected to assist significantly with the development of alternative energy sources. Additionally, the PIs have made a priority of the education of elementary, high school, undergraduate and graduate students on issues relating to energy, and the role materials can play in renewable energy systems. Multiple programs will be undertaken including educational outreach for school children in the 3rd through 12th grades, summer research experience for high school students, research opportunities for undergraduate students through programs including the University of Minnesota (UMN) Undergraduate Research Opportunities Program (UROP) and MRSEC REU programs, as well as the integration of research results into undergraduate and graduate classes in Chemical Engineering and Materials Science and Chemistry will be undertaken. The PIs will also disseminate results of the proposed work to industry through the UMN Industrial Partnership for Research in Interfacial and Materials Engineering (IPrime), which provides opportunities for professionals in industry to collaborate with researchers at the UMN. The PIs typically help co-organize and participate in the IPrime annual meeting, which offers students the opportunity to present their research to member companies. The project research and education activities represent an important contribution to the education of students and the wider community both at and beyond the UMN.