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.

非技术性：聚合物半导体在柔性电子产品中很有前途。然而，它们的载流子迁移率受到高度无序的薄膜形态和陷阱主导的电荷输运的限制。因此，减少无序并实现共轭聚合物用于电荷传输的全部潜力仍然是一个巨大的挑战。本项目的目标是探索一种以二维金属卤化物钙钛矿（MHP）单晶为相互作用衬底外延生长聚合物半导体单晶的方法。如果成功，它将允许直接测量聚合物半导体中的固有链内和链间电荷传输。由于陷阱缺陷较少，可能观察到前所未有的电荷传输。这项工作将提供共轭聚合物异质外延晶体生长的基本见解。这里研究的技术可能会进一步发展，在未来的大规模组装和系统的调查的结构-性能关系的电荷传输在聚合物半导体。打破共轭聚合物的无序主导的电荷传输限制可能会将该领域带到一个新的水平，并打开以前不可能用于各种光电和传感应用的新应用。这里调查的材料可以很容易地融入教学，教育和推广。技术：聚合物半导体有望用于柔性电子产品。然而，它们的载流子迁移率受到高度无序的薄膜形态和陷阱主导的电荷输运的限制。因此，减少无序并实现共轭聚合物用于电荷传输的全部潜力仍然是一个巨大的挑战。本项目的目标是探索一种以二维金属卤化物钙钛矿（MHP）单晶为相互作用衬底外延生长聚合物半导体单晶的方法。如果成功，它将允许直接测量聚合物半导体中的固有链内和链间电荷传输。由于陷阱缺陷较少，可能观察到前所未有的电荷传输。聚合物半导体将被制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被用作模板来引导有机半导体低聚物和聚合物的组装。这项工作将提供共轭聚合物异质外延晶体生长的基本见解。这里研究的技术可能会进一步发展，在未来的大规模组装和系统的调查的结构-性能关系的电荷传输在聚合物半导体。打破共轭聚合物的无序主导的电荷传输限制可能会将该领域带到一个新的水平，并打开以前不可能用于各种光电和传感应用的新应用。这里调查的材料可以很容易地融入教学，教育和推广。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。