EAGER: Superlattice-induced polycrystalline and single-crystalline structures in conjugated polymers

EAGER：共轭聚合物中超晶格诱导的多晶和单晶结构

• 批准号: 2203318
• 负责人: Zhenan Bao
• 金额: $ 30万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2203318&HistoricalAwards=false
• 关键词: EAGER; Superlattice; induced; polycrystalline; single

NON-TECHNICAL:Polymer semiconductors are promising for flexible electronics. However, their charge carrier mobilities are limited by the highly disordered thin film morphology and trap-dominated charge transport. Thus, it remains a grand challenge to reduce the disorder and realize the full potential of conjugated polymers for charge transport. The goal of this project is to explore a method for epitaxial growth of polymer semiconductor single crystals with two-dimensional metal halide perovskite (MHP) single crystals as interacting substrates. If successful, it will allow direct measurement of intrinsic intra- and interchain charge transport in polymer semiconductors. With less defects as traps, it may be possible to observe unprecedented charge transport. This work will provide fundamental insights on conjugated polymer heteroepitaxial crystal growth. The techniques investigated here may be further developed in the future for larger-scale assembly and for systematic investigation of the structure-property relationship for charge transport in polymer semiconductors. Breaking the disorder-dominated charge transport limit of conjugated polymers may potentially bring the field to a new level and opens new applications previously not possible for various optoelectronic and sensing applications. The materials investigated here can be readily integrated into teaching, education, and outreach. TECHNICAL:Polymer semiconductors are promising for flexible electronics. However, their charge carrier mobilities are limited by the highly disordered thin film morphology and trap-dominated charge transport. Thus, it remains a grand challenge to reduce the disorder and realize the full potential of conjugated polymers for charge transport. The goal of this project is to explore a method for epitaxial growth of polymer semiconductor single crystals with two-dimensional metal halide perovskite (MHP) single crystals as interacting substrates. If successful, it will allow direct measurement of intrinsic intra- and interchain charge transport in polymer semiconductors. With less defects as traps, it may be possible to observe unprecedented charge transport. Polymer semiconductors will be prepared to systematically investigate structure property relationships for single crystalline structure formation and charge transport. Various types of two-dimensional perovskite single crystals will be used as templates to guide the assembly of organic semiconducting oligomers and polymers. This work will provide fundamental insights on conjugated polymer heteroepitaxial crystal growth. The techniques investigated here may be further developed in the future for larger-scale assembly and for systematic investigation of the structure-property relationship for charge transport in polymer semiconductors. Breaking the disorder-dominated charge transport limit of conjugated polymers may potentially bring the field to a new level and opens new applications previously not possible for various optoelectronic and sensing applications. The materials investigated here can be readily integrated into teaching, education, and outreach. .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.

非技术：聚合物半导体对于柔性电子设备有希望。但是，他们的电荷载体迁移率受到高度无序的薄膜形态和陷阱主导的电荷运输的限制。因此，减少疾病并实现共轭聚合物进行电荷运输的全部潜力仍然是一个巨大的挑战。该项目的目的是探索一种用二维金属卤化物钙钛矿（MHP）单晶作为相互作用的底物的聚合物半导体单晶外延生长的方法。如果成功，它将允许直接测量聚合物半导体中固有的内部和链互动转运。由于陷阱的缺陷较少，因此可以观察到前所未有的电荷运输。这项工作将提供有关共轭聚合物异质晶体生长的基本见解。此处研究的技术可能会在将来进一步开发用于大规模组装，并系统地研究聚合物半导体中电荷运输的结构质能关系。打破共轭聚合物的障碍主导的电荷传输极限可能会使该领域提高到新的水平，并为各种光电和传感应用开放以前无法开设新的应用程序。这里研究的材料可以很容易地纳入教学，教育和外展。技术：聚合物半导体对于柔性电子设备有希望。但是，他们的电荷载体迁移率受到高度无序的薄膜形态和陷阱主导的电荷运输的限制。因此，减少疾病并实现共轭聚合物进行电荷运输的全部潜力仍然是一个巨大的挑战。该项目的目的是探索一种用二维金属卤化物钙钛矿（MHP）单晶作为相互作用的底物的聚合物半导体单晶外延生长的方法。如果成功，它将允许直接测量聚合物半导体中固有的内部和链互动转运。由于陷阱的缺陷较少，因此可以观察到前所未有的电荷运输。聚合物半导体将做好准备，以系统地研究单晶结构形成和电荷传输的结构性质关系。各种类型的二维钙钛矿单晶将用作模板，以指导有机半导体的低聚物和聚合物组装。这项工作将提供有关共轭聚合物异质晶体生长的基本见解。此处研究的技术可能会在将来进一步开发用于大规模组装，并系统地研究聚合物半导体中电荷运输的结构质能关系。打破共轭聚合物的障碍主导的电荷传输极限可能会使该领域提高到新的水平，并为各种光电和传感应用开放以前无法开设新的应用程序。这里研究的材料可以很容易地纳入教学，教育和外展。该奖项反映了NSF的法定任务，并通过使用基金会的智力优点和更广泛的影响审查标准来评估值得支持。