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Controlled Growth and Optoelectronic Characterization of Crystalline Oriented Organic P-N Junction Nanostructures

晶体取向有机 P-N 结纳米结构的控制生长和光电表征

基本信息

批准号：
1706633
负责人：
Trisha Andrew
金额：
$ 41.42万
依托单位：
University of Massachusetts Amherst
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2017
资助国家：
美国
起止时间：
2017-08-01 至 2022-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1706633&HistoricalAwards=false
关键词：
Controlled Growth Optoelectronic Characterization Crystalline

项目摘要

Organic semiconductors and their use in electronic devices such as solar cells are in high demand due to low cost fabrication, mechanical flexibility, and use of commonly sourced materials. Organic photovoltaic cells (OPVs) have already demonstrated power conversion efficiencies of 10%. However, to continue producing highly efficient devices, it will be critical to understand and control molecular orientation and microstructure at the interfaces of the device at the material level. The outcome from this program will have a broad impact in research areas striving to understand crystal chemistry, molecular packing, and charge/energy transport at molecular interfaces. This project will result in fundamental knowledge to impact the design of future OPVs that could not be gained through study of conventional devices. The PIs will also leverage their extensive track records of communicating the excitement of interdisciplinary research to a broad scientific community and to the general public. The PIs will encourage broadening participation in STEM by leveraging and participating in a multifaceted internship/mentoring program that targets STEM-major students from Springfield Technical Community College to fortify the number of underrepresented students in chemistry and engineering.The use of organic semiconductors with controlled crystallinity at the nanoscale will have a major impact in accelerating the emerging area of organic electronics, as these highly ordered systems will enable researchers to extract intrinsic charge carrier transport phenomena that cannot be accurately determined from disordered systems common to amorphous and/or polycrystalline films used in mainstream devices. In addition, understanding crystallization mechanisms will enable researchers to produce a variety of architectures for solar cell device applications. The goal of the research project is to grow discrete, oriented, crystalline organic P-N junctions, correlate nanomorphologies to optoelectronic properties and establish experimental methods for probing charge and exciton transport phenomena in these semiconductor nanodevices. Single nanowire level measurements will also define the fundamental limits of performance in these 1-D nanostructured systems. The project will enable one to bridge fundamental science with applied research that will be central to the discovery of potentially new device concepts in areas of nanoscale electronics, such as solar cells, vertical transistors, batteries, and sensors.

有机半导体及其在电子器件如太阳能电池中的用途由于低成本制造、机械灵活性和使用通常来源的材料而具有很高的需求。有机光伏电池（OPV）已经展示了10%的功率转换效率。然而，为了继续生产高效的器件，在材料水平上理解和控制器件界面处的分子取向和微观结构将是至关重要的。该计划的成果将在努力了解晶体化学，分子包装和分子界面的电荷/能量传输的研究领域产生广泛的影响。该项目将产生影响未来OPV设计的基础知识，这些知识无法通过研究传统设备获得。PI还将利用其向广泛的科学界和公众传达跨学科研究的兴奋的广泛记录。PI将通过利用和参与针对斯普林菲尔德技术社区学院STEM专业学生的多方面实习/指导计划，鼓励扩大STEM的参与，以加强化学和工程专业学生的代表性不足。在纳米尺度上具有可控结晶度的有机半导体的使用将对加速有机电子的新兴领域产生重大影响，因为这些高度有序的系统将使研究人员能够提取本征电荷载流子传输现象，而这些现象不能从主流器件中使用的非晶和/或多晶膜所共有的无序系统中准确地确定。此外，了解结晶机制将使研究人员能够为太阳能电池器件应用提供各种架构。该研究项目的目标是生长离散的，定向的，结晶有机P-N结，将纳米形态与光电特性相关联，并建立用于探测这些半导体纳米器件中的电荷和激子传输现象的实验方法。单纳米线水平的测量也将定义这些1-D纳米结构系统的性能的基本限制。该项目将使人们能够将基础科学与应用研究联系起来，这将是发现纳米级电子领域潜在新器件概念的核心，如太阳能电池，垂直晶体管，电池和传感器。