Dynamics of exciton diffusion in organic semiconductor materials

有机半导体材料中激子扩散动力学

• 批准号: 1006566
• 负责人: Russell Holmes
• 金额: $ 44.1万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-01 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1006566&HistoricalAwards=false
• 关键词: Dynamics; exciton; diffusion; organic; semiconductor

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.

技术：该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。该项目的方法旨在关联的激子扩散进行了稳态和超快光谱以及基于设备的结果的调查。这些研究预计能够确定最有前途的和准确的手段，表征激子扩散，也阐明了分子结构和单线态-三线态激子的扩散物种和机制的系统间交叉的作用。后者将有助于澄清磷光材料在OPV中可以发挥的潜在作用。非技术性：该项目涉及材料科学专题领域的基础研究问题，与电子学和光子学的技术相关性-该项目的基本科学研究结果预计将大大有助于替代能源的开发。此外，PI还优先重视对小学、高中、本科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的作用。将开展多个项目，包括3至12年级学童的教育推广，高中生的暑期研究经验，通过明尼苏达大学（UMN）本科生研究机会计划（UROP）和MRSEC REU计划等项目为本科生提供研究机会，以及将研究成果融入化学工程和材料科学与化学的本科生和研究生课程。PI还将通过UMN界面和材料工程研究工业合作伙伴关系（IPrime）向行业传播拟议工作的结果，该合作伙伴关系为行业专业人士提供与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，为学生提供向成员公司展示他们研究的机会。该项目的研究和教育活动代表了对学生和更广泛的社区教育的重要贡献，无论是在UMN内外。