Engineering efficient contacts for organic electronic devices

有机电子器件的高效接触设计

基本信息

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

项目摘要

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：有机半导体是一类可以实现新技术的新型材料。他们的设备应用可能会影响能源、交通、通信和医药等行业。要发生这样一场彻底的革命，需要克服一些性能限制。已经制造了大量具有高载流子迁移率的有机半导体，载流子迁移率是电子在材料中移动速度的衡量标准。然而，有机半导体的电荷注入仍然是高性能器件发展的瓶颈。该项目将通过实验和建模相结合的综合方法来应对这一挑战。该项目的目标是开发描述有机半导体电荷注入并减少接触影响的方法。这些见解可用于创建创新的设备设计。该项目将显着推进有机半导体器件领域的发展，可能实现目前不可能的应用。该项目将使学生接触最先进的半导体加工和表征，并为他们在现代制造业的就业做好准备。 PI 是一位敬业的导师，将为学生提供实验室研究机会，并将研究融入课堂。她还将联系当地的高中、社区学院、大学和儿童博物馆。她将继续努力通过参加会议和校园组织的特别活动、在当地学校开展活动以及积极参与正式和非正式的指导来吸引和留住科学领域代表性不足的少数族裔学生。技术：有机半导体提供了机会增强硅电子在非传统领域的应用，例如服装、电子纸、柔性和可卷曲应用或生物集成应用。随着近年来迁移率极高的化合物的发展，该领域面临着巨大的挑战：降低活性电子层电阻的直接后果是接触电阻的贡献变得显着。迫切需要在器件设计方面进行创新，以减少接触对器件性能的影响。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，并开发一种在存在严重接触效应的情况下准确确定载流子迁移率的方法。设计了一组实验和建模任务，以便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以及接触电阻的大幅降低，达到即使对于非常高的本征迁移率也能实现的水平。流动性材料。拟议的研究旨在激发新技术，并将有机半导体推向目前无法使用的无处不在的电子产品。该项目将为在多元化和多学科环境中教育学生并让他们接触最先进的半导体加工和表征技术提供一个绝佳的场所。 PI是一位敬业的老师和导师，除了学生之外，她也会积极参与项目的每个阶段。她将寻求不同的机会为学生提供参观国家实验室和其他大学实验室所需的资金。她的小组将联系当地的高中和社区大学，并接待来访的学生。 PI 将通过她正在组织的会议、大学和院系活动，并有效地领导自己的研究小组融入这些价值观，有意识地努力提高 STEM 多样性和包容性的意识。该奖项反映了 NSF 的法定使命，并已通过使用基金会的智力优点和更广泛的影响审查标准进行评估，认为值得支持。

项目成果

期刊论文数量（16）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

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：
2022-12
期刊：
Nanoscale
影响因子：
6.7
作者：
Sullivan, Ryan P.;Castellanos;Ma, Renate;Welker, Mark E.;Jurchescu, Oana D.
通讯作者：
Jurchescu, Oana D.

Organic thin-film transistors with flame-annealed contacts

具有火焰退火触点的有机薄膜晶体管

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：
Waldrip, Matthew;Iqbal, Hamna F;Wadsworth, Andrew;McCulloch, Iain;Jurchescu, Oana D
通讯作者：
Jurchescu, Oana D

Contact Resistance in Organic Field‐Effect Transistors: Conquering the Barrier

有机场中的接触电阻——效应晶体管：克服障碍

DOI：
10.1002/adfm.201904576
发表时间：
2019-09-19
期刊：
Advanced Functional Materials
影响因子：
19
作者：
Matthew Waldrip;O. Jurchescu;D. Gundlach;E. Bittle
通讯作者：
E. Bittle

Organic single crystals of charge-transfer complexes: model systems for the study of donor/acceptor interactions

电荷转移复合物的有机单晶：研究供体/受体相互作用的模型系统

DOI：
10.1039/d1mh01214b
发表时间：
2022-01
期刊：
Materials Horizons
影响因子：
13.3
作者：
Goetz, Katelyn P.;Iqbal, Hamna F.;Bittle, Emily G.;Hacker, Christina A.;Pookpanratana, Sujitra;Jurchescu, Oana D.
通讯作者：
Jurchescu, Oana D.

Intermolecular charge transfer enhances the performance of molecular rectifiers

分子间电荷转移增强分子整流器的性能

DOI：
10.1126/sciadv.abq7224
发表时间：
2022-08-05
期刊：
Science Advances
影响因子：
13.6
作者：
Sullivan, Ryan P.;Morningstar, John T.;Castellanos-Trejo, Eduardo;Bradford, Robert W.;Hofstetter, Yvonne J.;Vaynzof, Yana;Welker, Mark E.;Jurchescu, Oana D.
通讯作者：
Jurchescu, Oana D.