Engineering efficient contacts for organic electronic devices

有机电子器件的高效接触设计

• 批准号: 1810273
• 负责人: Oana Jurchescu
• 金额: $ 35万
• 依托单位: Wake Forest University
• 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: 2018-08-15 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1810273&HistoricalAwards=false
• 关键词: Engineering; efficient; contacts; organic; electronic

Nontechnical:Organic semiconductors are a novel class of materials that can enable new technologies. Their device applications could impact industries such as energy, transportation, communications and medicine. For such a sweeping revolution to occur, there are performance limits to be overcome. A large number of organic semiconductors with high carrier mobility, a measure of how quickly electrons move through a material, have been made. However, charge injection into organic semiconductors remains a bottleneck to the development of high performance devices. The project will confront this challenge through an integrated approach combining experiment and modelling. The goal of this project is to develop methods to describe charge injection into organic semiconductors and reduce the impact of contacts. These insights can then be used to create innovative device designs. This project will significantly advance the field of organic semiconductor devices, possibly leading to applications that are currently impossible. This project will expose students to state-of the-art semiconductor processing and characterization and prepare them for employment in modern manufacturing. The PI is a dedicated mentor and will offer research opportunities to students in the laboratory setting and integrate research into the classroom. She will also reach out to local high-schools, community colleges, universities, and children's museums. She will continue her efforts to attract and retain under-represented minority students in science by participating in special events organized at conferences and on campus, running campaigns in local schools, and actively participating in formal and informal mentoring.Technical:Organic semiconductors provide an opportunity to augment silicon electronics in non-traditional areas such as clothing, electronic paper, flexible and rollable applications, or bio-integrated applications. With the recent development of very high mobility compounds, the field faces a great challenge: a direct consequence of lowering the resistance of the active electronic layer is that now the contribution of the contact resistance becomes significant. Innovation in device design for reducing the impact of contacts on device performance is urgently needed. The goals of this project are to engineer better devices through minimizing or eliminating the contact effects and to develop a methodology for accurate determination the charge carrier mobility in the presence of severe contact effects. A set of experiments and modelling tasks were designed to allow for a better understanding of charge injection and transport in organic semiconductors, a rigorous device parameter extraction and a drastic reduction in the contact resistance to a level where intrinsic mobility is accessible even for the very high mobility materials. The proposed research is designed to spark new technologies and propel organic semiconductors to ubiquitous electronics that are currently inaccessible. The project will provide an excellent venue for educating students in a diverse and multidisciplinary environment and exposing them to state-of the-art semiconductor processing and characterization techniques. The PI is a dedicated teacher and mentor, and she will actively be involved in each stage of the project besides her students. She will seek different opportunities to provide her students funding necessary to visit national labs and other university labs. Her group will reach out to local high-schools and community colleges, and host visiting students. The PI will dedicate a conscious effort to raising awareness for diversity and inclusion in STEM, through the conferences she is organizing, university and department events, and effectively leading her own research group embedded in these values.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：有机半导体是一种新型材料，可以实现新技术。它们的设备应用可能会影响能源、交通、通信和医药等行业。要实现这样一场彻底的革命，需要克服性能限制。大量具有高载流子迁移率的有机半导体已经被制造出来，载流子迁移率是衡量电子在材料中移动速度的一个指标。然而，电荷注入到有机半导体中仍然是发展高性能器件的瓶颈。该项目将通过实验和建模相结合的综合方法应对这一挑战。该项目的目标是开发方法来描述电荷注入到有机半导体中，并减少接触的影响。这些见解可以用于创建创新的设备设计。该项目将大大推进有机半导体器件领域，可能导致目前不可能的应用。该项目将使学生接触到最先进的半导体加工和表征，并为他们在现代制造业就业做好准备。PI是一个专门的导师，将在实验室环境中为学生提供研究机会，并将研究融入课堂。她还将接触当地的高中，社区学院，大学和儿童博物馆。她将继续努力，通过参加在会议和校园组织的特别活动，在当地学校开展活动，并积极参与正式和非正式的指导，吸引和留住在科学领域代表性不足的少数民族学生。技术：有机半导体提供了一个机会，以增加非传统领域的硅电子产品，如服装，电子纸，灵活和可滚动的应用，或生物集成应用。随着最近非常高的迁移率化合物的发展，该领域面临着巨大的挑战：降低有源电子层电阻的直接后果是现在接触电阻的贡献变得显著。迫切需要在器件设计中进行创新，以减少触点对器件性能的影响。该项目的目标是通过最小化或消除接触效应来设计更好的器件，并开发一种方法来准确确定严重接触效应存在下的电荷载流子迁移率。设计了一组实验和建模任务，以更好地理解有机半导体中的电荷注入和传输，严格的器件参数提取和接触电阻的急剧降低到即使对于非常高的迁移率材料也可以获得本征迁移率的水平。这项拟议中的研究旨在激发新技术，并将有机半导体推向目前无法访问的无处不在的电子产品。该项目将提供一个很好的场所，教育学生在一个多元化和多学科的环境，并让他们接触到最先进的半导体加工和表征技术。PI是一位敬业的教师和导师，她将积极参与项目的每个阶段，除了她的学生。她将寻求不同的机会，为她的学生提供必要的资金，以访问国家实验室和其他大学实验室。她的小组将接触当地的高中和社区大学，并接待来访的学生。PI将致力于通过她组织的会议，大学和部门活动，并有效地领导她自己的研究小组嵌入这些价值观来提高对STEM多样性和包容性的认识。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值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

Humidity sensors based on molecular rectifiers

基于分子整流器的湿度传感器

• DOI: 10.1039/d2nr04498f
• 发表时间: 2022
• 期刊: Nanoscale
• 影响因子: 6.7
• 作者: Sullivan, Ryan P.;Castellanos-Trejo, Eduardo;Ma, Renate;Welker, Mark E.;Jurchescu, Oana D.
• 通讯作者: Jurchescu, Oana D.

High-Photoresponsivity Transistors Based on Small-Molecule Organic Semiconductors

基于小分子有机半导体的高光响应晶体管

• DOI: 10.1021/acsaelm.2c00970
• 发表时间: 2022
• 期刊: ACS Applied Electronic Materials
• 影响因子: 4.7
• 作者: Jagoo, Zafrullah;Lamport, Zachary A.;Jurchescu, Oana D.;McNeil, Laurie E.
• 通讯作者: McNeil, Laurie E.

Molecular Rectifiers on Silicon: High Performance by Enhancing Top-Electrode/Molecule Coupling

• DOI: 10.1021/acsami.9b02315
• 发表时间: 2019-05-22
• 期刊: ACS APPLIED MATERIALS & INTERFACES
• 影响因子: 9.5
• 作者: Lamport, Zachary A.;Broadnax, Angela D.;Jurchescu, Oana D.
• 通讯作者: Jurchescu, Oana D.

Organic thin-film transistors with flame-annealed contacts

• DOI: 10.1088/2058-8585/ab76e1
• 发表时间: 2020-03
• 期刊: Flexible and Printed Electronics
• 影响因子: 3.1
• 作者: Matthew Waldrip;Hamna F. Iqbal;Andrew Wadsworth;I. McCulloch;O. Jurchescu

Large‐Area Uniform Polymer Transistor Arrays on Flexible Substrates: Towards High‐Throughput Sensor Fabrication

柔性基板上的大面积均匀聚合物晶体管阵列：迈向高吞吐量传感器制造

• DOI: 10.1002/admt.202000390
• 发表时间: 2020
• 期刊: Advanced Materials Technologies
• 影响因子: 6.8
• 作者: Zeidell, Andrew M.;Filston, David S.;Waldrip, Matthew;Iqbal, Hamna F.;Chen, Hu;McCulloch, Iain;Jurchescu, Oana D.
• 通讯作者: Jurchescu, Oana D.