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Stabilization and Circuit Strategies for Enhanced Vapor Sensing with Polymer Semiconductors

聚合物半导体增强蒸汽传感的稳定性和电路策略

基本信息

批准号：
1807293
负责人：
Howard Katz
金额：
$ 43.85万
依托单位：
Johns Hopkins 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 2021-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1807293&HistoricalAwards=false
关键词：
Stabilization Circuit Strategies Enhanced Vapor

项目摘要

Non-technical: Sensing of gas-phase compounds is essential for monitoring industrial processes, detecting military and security threats, ensuring air quality, and, most recently, aids medical diagnosis. Small, unobtrusive, and low-cost sensors can be deployed throughout an area or a building and incorporated into wearable electronics. Organic semiconductors (OSCs) are attractive for use in vapor sensors as they can be incorporated into simple devices such as resistors or transistors and are compatible with mechanically flexible substrates and low-cost fabrication processes. The chemical properties of OSCs can be tuned to optimize the response to target gases and control the electronic responses of sensors. One major drawback of OSC-based sensors is the tendency of the output current or voltage to drift over time due to environmental effects such as temperature and humidity or in response to non-target gases (interferents). This project will use chemically stable OSCs and employ them in circuit layouts that minimize the influence of interferents and environmental effects. Progress will be made by combining material synthesis with device fabrication and simulation of devices and circuits. Circuits will be developed that preserve sensitivity while minimizing environmental drift; arrays of these circuits will provide increased selectivity. The project will include multiple outreach efforts. Computer modeling opportunities will be offered to undergraduate and high school students from the underserved Appalachian region anchored by Frostburg State University. A related class will be developed and a summer camp for high school students will be held at Frostburg State University. High school interns will be recruited to Johns Hopkins University from a local high school that serves an underrepresented community. Technical: Sensing of gas-phase compounds is essential for monitoring industrial processes, detecting military and security threats, ensuring air quality, and most recently as a tool in medical diagnosis. The smallest, least intrusive, and lowest cost options can be used for widespread deployment throughout a building or geographic zone or incorporated into wearable electronics. Organic semiconductors (OSCs), including molecules and polymers, have multiple advantages for vapor sensors, as they are compatible with simple sensing circuitry, mechanically flexible substrates, and low-cost fabrication processes. They also have well understood chemical tunability and interactions with gaseous analytes for optimal design and control of the electronic responses to the analytes. They may be incorporated into simple resistive devices, or organic field-effect transistors for cascading in logic circuits. One major drawback of OSC-based sensors is the tendency of the output current or voltage to drift over time, related to their responsiveness to interferents and environmental perturbations, such as humidity and temperature change. This proposal will demonstrate the advantages to be gained by using OSCs with greater chemical stability and employing them in circuit layouts that minimize the influence of interferents and make the responses to analytes more pronounced. Progress will be made by combined efforts in material and device fabrication and in simulation of devices and circuits. The combined material sensitivity to analytes and stability against environmental influences will be optimized. Circuits will be developed that preserve analyte signaling while minimizing the environmental drift. Arrays of these circuits will provide increased selectivity. This work will provide an enabling solution to performance requirements for the adoption of OSC-based sensors in commercial technologies. Electronic device simulation opportunities will be offered to undergraduate and high school students from the underserved Appalachian region anchored by Frostburg State University. Undergraduate students will learn semiconductor device physics, develop computer programming skills, and learn modern device simulation software. High school interns will be recruited to Johns Hopkins University from predominantly female-minority Western High School in Baltimore City.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：气相化合物的检测对于监控工业过程、检测军事和安全威胁、确保空气质量以及最近的医疗诊断至关重要。小型、不显眼且低成本的传感器可以部署在整个区域或建筑物中，并集成到可穿戴电子产品中。有机半导体（OSC）对于在蒸气传感器中的使用是有吸引力的，因为它们可以被结合到简单的器件（诸如电阻器或晶体管）中，并且与机械柔性基板和低成本制造工艺兼容。可以调整OSC的化学性质，以优化对目标气体的响应并控制传感器的电子响应。基于OSC的传感器的一个主要缺点是由于温度和湿度等环境影响或响应于非目标气体（干扰物），输出电流或电压随时间漂移的趋势。该项目将使用化学稳定的OSC，并将其用于电路布局中，以最大限度地减少干扰物和环境影响的影响。将材料合成与器件制造以及器件和电路的模拟相结合将取得进展。电路将被开发，保持灵敏度，同时最大限度地减少环境漂移;这些电路的阵列将提供更高的选择性。该项目将包括多项外联工作。计算机建模的机会将提供给本科生和高中学生从服务不足的阿巴拉契亚地区锚由弗罗斯特堡州立大学。将在弗罗斯特堡州立大学开设一个相关课程，并为高中生举办一个夏令营。高中实习生将被招募到约翰霍普金斯大学从当地高中，服务于一个代表性不足的社区。技术支持：气相化合物的检测对于监测工业过程、检测军事和安全威胁、确保空气质量以及最近作为医疗诊断工具至关重要。最小、侵入性最小、成本最低的选项可用于整个建筑物或地理区域的广泛部署，或集成到可穿戴电子设备中。有机半导体（OSC），包括分子和聚合物，对于蒸汽传感器具有多种优势，因为它们与简单的传感电路、机械柔性基板和低成本制造工艺兼容。它们还具有良好的化学可调性和与气态分析物的相互作用，用于对分析物的电子响应的最佳设计和控制。它们可以被合并到简单的电阻器件中，或者有机场效应晶体管中，用于逻辑电路中的级联。基于OSC的传感器的一个主要缺点是输出电流或电压随时间漂移的趋势，这与它们对干扰物和环境扰动（例如湿度和温度变化）的响应有关。该提案将证明通过使用具有更高化学稳定性的OSC并将其用于电路布局中所获得的优势，该电路布局可最大限度地减少干扰物的影响并使对分析物的响应更加明显。在材料和器件制造以及器件和电路模拟方面的共同努力将取得进展。将优化材料对分析物的灵敏度和对环境影响的稳定性。将开发电路，保留分析物信号，同时最大限度地减少环境漂移。这些电路的阵列将提供增加的选择性。这项工作将为在商业技术中采用基于OSC的传感器的性能要求提供一个有利的解决方案。电子设备模拟的机会将提供给本科生和高中生从服务不足的阿巴拉契亚地区锚由弗罗斯特堡州立大学。本科生将学习半导体器件物理，发展计算机编程技能，并学习现代器件仿真软件。高中实习生将从巴尔的摩市以女性为主的西部高中招募到约翰霍普金斯大学。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

期刊论文数量（8）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Simulation of two-transistor parallel and series circuits for gas sensing validated by experimental data

通过实验数据验证的气体传感双晶体管并联和串联电路仿真

DOI：
10.1007/s10825-020-01591-6
发表时间：
2021
期刊：
Journal of Computational Electronics
影响因子：
2.1
作者：
Wondmagegn, W.;Chu, Yingli;Li, Hui;Katz, Howard E.;Huang, Jia
通讯作者：
Huang, Jia

High Signal‐to‐Noise Chemical Sensors Based on Compensated Organic Transistor Circuits

DOI：
10.1002/admt.201900410
发表时间：
2019-08
期刊：
Advanced Materials Technologies
影响因子：
6.8
作者：
Yingli Chu;Hui Li;Jia Huang;H. Katz
通讯作者：
Yingli Chu;Hui Li;Jia Huang;H. Katz

Material and circuit design for organic electronic vapor sensors and biosensors

有机电子蒸汽传感器和生物传感器的材料和电路设计

DOI：
10.1117/12.2530058
发表时间：
2019
期刊：
110960A
影响因子：
0
作者：
Dailey, Jennifer;Li, Hui;Song, Jian;Besar, Kalpana;Jang, Hyun-June;Chu, Yingli;Katz, Howard E.;Shinar, Ruth;Kymissis, Ioannis;List-Kratochvil, Emil J.
通讯作者：
List-Kratochvil, Emil J.

Trap-dominated nitrogen dioxide and ammonia responses of air-stable p-channel conjugated polymers from detailed bias stress analysis