Surfaces and interfaces of luminescent polymer mixed ionic/electronic conductors

发光聚合物混合离子/电子导体的表面和界面

• 批准号: RGPIN-2020-04026
• 负责人: Gao, Jun
• 金额: $ 2.48万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=716777
• 关键词: Surfaces; interfaces; luminescent; polymer; mixed

Surfaces and interfaces of luminescent polymer mixed ionic/electronic conductors Our interdisciplinary research program focuses on polymer mixed ionic/electronic conductors (MIECs) composed of luminescent conjugated polymers and solid polymer electrolytes. In our Laboratory of Organic Photonics and Iontronics (LOPI), we fabricate various sample structures from scratch, and perform electrical transport, optical imaging, voltammetry, spectroscopy and modelling studies to better understand electrochemical doping and its dramatic effect on the electronic structures and optical properties of luminescent CPs. By introducing bipolar electrodes into the polymer MIEC, we pioneered an inter-disciplinary field of research, solid-state bipolar electrochemistry rich in unexplored surface and interface sciences. Our long-term vision for MIECs is a class of high performance, low-cost, printed devices enabled by a deep understanding of the complex material system. MIECs derived from polymers, organic small molecules, ionic transition metal complexes, or perovskites are emerging materials with potential applications in light-emitting devices, photovoltaic solar cells, transistors and energy storage. Polymer MIECs are particularly attractive because they have the mechanical and processing advantages of polymers as well as being optically and electrically interesting. In its most useful form, the polymer MIEC is electrochemically p- and n-doped in situ to form a light-emitting polymer p-n junction that can also produce a photovoltaic response when the ions are immobilized by cooling. By discharging a doped MIEC, electrical energy can be extracted. The proposed research aims to fill the knowledge gaps that still exist in polymer MIECs and MIEC-based devices such as the light-emitting electrochemical cells. The short-term objectives are to develop a thorough understanding of (1) the frozen polymer p-n junction in its doping concentration, conductivity profile, electronic structure, electroluminescent properties and transient response; (2) the interfacial phenomena between a luminescent conjugated polymer and a solid polymer electrolyte; and (3) the dramatic effects of bipolar electrodes and bipolar electrode arrays on doping and junction formation. Our long-term research goal works towards designing more efficient and long-lasting MIECs by answering the fundamental questions about MIEC surfaces and interfaces. To carry out the proposed research, we will leverage our 20 plus years of research experience in the relevant fields, state-of-the-art facilities, innovative research methodology and techniques, and excellence in HQP training. The proposed research will train undergraduate and graduate researchers on highly valuable technical, communication, and leadership skills that will prepare them for a successful career in academia or the high-tech industry.

发光聚合物混合离子/电子导体的表面和界面 我们的跨学科研究计划着重于聚合物混合离子/电子导体（MIEC），由发光共轭聚合物和固体聚合物电解质组成。在我们的有机光子学和离子形成实验室（LOPI）中，我们从头开始制造各种样品结构，并进行电运输，光学成像，伏安法，光谱和建模研究，以更好地了解电化学兴奋剂及其对发光CPS的电子结构和光学特性的巨大效应。通过将双极电极引入聚合物MIEC中，我们开创了研究的跨学科领域，富含未探索的表面和界面科学的固态双极电化学。我们对MIEC的长期愿景是一类高性能，低成本的印刷设备，通过对复杂材料系统的深刻了解来实现。 源自聚合物，有机小分子，离子过渡金属复合物或钙钛矿的MIEC是新兴材料，在发光设备，光伏太阳能电池，晶体管和能量存储中具有潜在应用。聚合物MIEC特别有吸引力，因为它们具有聚合物的机械和处理优势以及光学和电气有趣的。在最有用的形式中，聚合物MIEC在原位上是电化学的P-和N掺杂的，形成了发光的聚合物P-N结，当离子通过冷却固定时，该连接也可以产生光伏响应。通过排放掺杂的MIEC，可以提取电能。 拟议的研究旨在填补聚合物MIEC和基于MIEC的设备（例如发光电化学细胞）中仍然存在的知识空白。短期目标是对（1）在其掺杂浓度，电导率曲线，电子结构，电发光特性和瞬时响应中彻底了解（1）冷冻聚合物P-N连接； （2）发光共轭聚合物和固体聚合物电解质之间的界面现象； （3）双极电极和双极电极阵列对掺杂和连接形成的戏剧作用。我们的长期研究目标致力于通过回答有关MIEC表面和接口的基本问题来设计更高效，更持久的MIEC。 为了进行拟议的研究，我们将利用我们在相关领域，最先进的设施，创新的研究方法和技术以及HQP培训方面的20多年研究经验。拟议中的研究将培训本科和研究生研究人员的高价技术，沟通和领导能力，这将为他们在学术界或高科技行业的成功职业做好准备。