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Elucidating Physical and Electronic Interactions in Ternary Blend Organic Solar Cells

阐明三元混合有机太阳能电池中的物理和电子相互作用

基本信息

批准号：
1803063
负责人：
Barry Thompson
金额：
$ 31.76万
依托单位：
University of Southern California
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2022-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1803063&HistoricalAwards=false
关键词：
Elucidating Physical Electronic Interactions Ternary

项目摘要

Solar energy is among the most attractive renewable energy sources, providing motivation for fundamental research to enable low-cost technologies that are adaptable for a variety of applications. Among these, thin film organic photovoltaic cells (based on small organic molecules and polymers) are a potentially suitable option. This technology provides a path towards a lightweight, flexible platform for integration of renewable electricity production capacity into building infrastructure. Of the organic solar cells under study, ternary blend cells have demonstrated the potential for state-of-the-art efficiency. In addition, the technology amends itself to simple device fabrication methods that are compatible with existing continuous roll-to-roll processing manufacturing methods. This project will address fundamental research into the mechanisms that govern the active layer of material, the polymer blend, in order to increase efficiency of the resulting device. The project will focus on the complex physical and electronic interactions in the ternary polymer blend mixture that determines the cell's solar conversion efficiency. The research plan of the project is coupled with a cohesive educational plan that benefits community college students as well as University of Southern California (USC) undergraduates and graduate students. Community college students from Cerritos College (Norwalk, CA) will be hosted each summer to participate in the research project. These students are largely from under-represented groups in STEM and many are first generation college students. The project also involves collaborations with laboratories in Germany and Denmark. Undergraduate and graduate students (from Cerritos and USC) will also work closely with the international collaborators, including graduate student exchange for an extended international research experience. Finally, the project includes efforts toward developing write-to-learn pedagogies are being pursued in undergraduate organic chemistry courses at USC with the goal of facilitating learning and student retention. The focus of the fundamental research project is to expand the understanding of the role of miscibility of synergistic components in ternary blend organic solar cells, specifically those based on two donor polymers and one molecular acceptor. Specific interests are centered on how physical relationships influence the open circuit voltage and on the development of a more global picture of favorable electronic interactions between components. The objectives of the project are: to elucidate the fundamental physical and electronic interactions between synergistic components and clarify the mechanism of operation; to establish the limits of effective electronic relationships between synergistic donor components, specifically focusing on the maximum effective highest occupied molecular orbital offset; and to develop rational design rules for synergistic components. This work will be executed through a combination of polymer synthesis, basic electronic and structural characterization, device characterization and theory. Achievement of the stated objectives should lead to an enhanced fundamental understanding of the ternary blend platform and the path to clear design principles for new donor and acceptor components.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

太阳能是最具吸引力的可再生能源之一，为基础研究提供了动力，使低成本技术能够适应各种应用。其中，薄膜有机光伏电池(基于有机小分子和聚合物)是一个潜在的合适选择。这项技术为将可再生电力生产能力整合到建筑基础设施中提供了一条轻便、灵活的平台。在正在研究的有机太阳能电池中，三元混合电池展示了最先进的效率潜力。此外，该技术改进为简单的器件制造方法，与现有的连续卷到卷加工制造方法兼容。该项目将致力于基础研究，以控制材料的活跃层，聚合物混合物，以提高所产生的装置的效率。该项目将专注于三元聚合物混合物中复杂的物理和电子相互作用，这决定了电池的太阳能转换效率。该项目的研究计划与一个连贯的教育计划相结合，使社区大学生以及南加州大学(USC)的本科生和研究生受益。每年夏天，塞里托斯学院(加利福尼亚州诺沃克)的社区学院学生将被招待参加这项研究项目。这些学生主要来自STEM中代表性不足的群体，其中许多是第一代大学生。该项目还涉及与德国和丹麦的实验室合作。本科生和研究生(来自Cerritos和南加州大学)也将与国际合作者密切合作，包括研究生交流，以获得更广泛的国际研究经验。最后，在南加州大学的本科生有机化学课程中，该项目包括努力发展以写为学的教学方法，目的是促进学习和留住学生。基础研究的重点是扩大对三元混合有机太阳能电池中协同组分混溶作用的理解，特别是基于两个给体聚合物和一个分子受体的三元混合有机太阳能电池。具体的兴趣集中在物理关系如何影响开路电压，以及元件之间有利的电子相互作用的更全球图景的发展。该项目的目标是：阐明协同作用组分之间的基本物理和电子相互作用并阐明其作用机制；确定协同作用给体组分之间有效电子关系的限度，特别侧重于最大有效最高占据分子轨道偏移量；以及制定协同作用组分的合理设计规则。这项工作将通过聚合物合成、基本电子和结构表征、器件表征和理论相结合来完成。所述目标的实现应有助于加深对三元混合平台的基本了解，并为新的捐赠者和接受者组件提供明确的设计原则。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

期刊论文数量（7）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Influence of Acceptor Side-Chain Length and Conjugation-Break Spacer Content on the Mechanical and Electronic Properties of Semi-Random Polymers

DOI：
10.1021/acsapm.9b00115
发表时间：
2019-04
期刊：
ACS Applied Polymer Materials
影响因子：
5
作者：
Elizabeth L. Melenbrink;Kristan Hilby;Kartik Choudhary;S. Samal;Negar Kazerouni;John Luke McConn;D. Lipomi;B. Thompson
通讯作者：
Elizabeth L. Melenbrink;Kristan Hilby;Kartik Choudhary;S. Samal;Negar Kazerouni;John Luke McConn;D. Lipomi;B. Thompson

Unprecedented Efficiency Increase in a Ternary Polymer Solar Cell Exhibiting Polymer-Mediated Polymorphism of a Non-Fullerene Acceptor

DOI：
10.1021/acsmaterialslett.2c00823
发表时间：
2022-11
期刊：
ACS Materials Letters
影响因子：
11.4
作者：
Qing Wan;Liwei Ye;B. Thompson
通讯作者：
Qing Wan;Liwei Ye;B. Thompson

Green-Solvent-Processed Amide-Functionalized Conjugated Polymers Prepared via Direct Arylation Polymerization (DArP)

DOI：
10.1021/acs.macromol.9b02014
发表时间：
2019-11
期刊：
Macromolecules
影响因子：
5.5
作者：
Liwei Ye;R. Pankow;Mami Horikawa;Elizabeth L. Melenbrink;Kangying Liu;B. Thompson
通讯作者：
Liwei Ye;R. Pankow;Mami Horikawa;Elizabeth L. Melenbrink;Kangying Liu;B. Thompson

Tuning the surface energies in a family of poly-3-alkylthiophenes bearing hydrophilic side-chains synthesized via direct arylation polymerization (DArP)