ARI-MA: Trap-Triggered Organic Field Effect Transistor as Low-Cost, Uncooled, Highly Sensitive Solid-State Photodetectors for Radiation Sensing

ARI-MA：陷阱触发有机场效应晶体管，作为用于辐射传感的低成本、非冷却、高灵敏度固态光电探测器

• 批准号: 1348272
• 负责人: Jinsong Huang
• 金额: $ 15万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-10-01 至 2015-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1348272&HistoricalAwards=false
• 关键词: ARI; MA; Trap; Triggered; Organic

The goal of this project is to develop a type of extremely high-gain, low-noise organic photodetector as a replacement for expensive photomultiplier tubes (PMTs) for applications in the low-cost radiation detectors systems. The proposed device will use the incident photon as a switching valve to control the source-drain output current of organic field effect transistors. These photodetectors allow dramatic changing of the hole injection from electrode into semiconductor channel by the trapped-electrons-induced charge injection at the organic semiconductor-electrode interface. Because the trapped electrons are injected by the incident photons, each absorbed photon will cause a large output current change in the devices, producing a very large apparent gain. The proposed photodetector will provide a new mechanism to achieve a high gain and low noise comparable to that of PMTs driven by relative low bias, and has substantial potential to replace PMTs due to superior characteristics including compact size, robustness, high gain, low noise, low power consumption, low cost, and excellent responsivity to the photon emission from scintillator. The success of this project will yield a new generation of solid-state photodetectors to achieve the NSF/Domestic Nuclear Detection Office (DNDO)'s capital investment cost goals of less than $100 per detector/sensor. This new, low-cost photodetector may then be integrated with future low-cost nanocomposite scintillators, enabling the detection and interdiction of nuclear/radiological devices or component materials by allowing for deployment of many compact, unobtrusive detectors in remote areas - such as smuggling routes - where persistent manned surveillance would be difficult. This will significantly improve the nation?s ability to prevent nuclear or radiological attacks. Successful execution of the proposed research will also have significant importance for science, technology, and society, particularly in industrial, medical, and other defense applications. For example, an increased sensitivity photodetector would reduce the radiation dose exposed to the patient in computerized tomography scanning. This project will also add another new category of low-cost electronic device into the emerging class of printable electronics. Further, undergraduate students will be recruited from well-known undergraduate research and outreach programs at the University of Nebraska-Lincoln, including the highly successful Undergraduate Creative Activities and Research Experiences Program (UCARE) and Research Experience for Undergraduates (REU) program in the Nebraska Center of Materials and Nanoscience.

本计画的目标是研制一种高增益、低杂讯的有机光侦测器，以取代昂贵的光电倍增管，应用于低成本的辐射侦测系统。所提出的器件将利用入射光子作为开关阀来控制有机场效应晶体管的源漏输出电流。这些光电探测器允许通过在有机光电探测器-电极界面处的捕获电子诱导的电荷注入来戏剧性地改变从电极到半导体沟道的空穴注入。由于被俘获的电子是由入射光子注入的，每个被吸收的光子都会引起器件中很大的输出电流变化，从而产生非常大的表观增益。该光电探测器将提供一种新的机制来实现与由相对低的偏压驱动的PMT相比的高增益和低噪声，并且由于具有包括紧凑的尺寸、鲁棒性、高增益、低噪声、低功耗、低成本和对闪烁体的光子发射的优异响应度的上级特性，具有替代PMT的实质性潜力。该项目的成功将产生新一代固态光电探测器，以实现NSF/国内核探测办公室（DNDO）的资本投资成本目标，即每个探测器/传感器的投资成本低于100美元。 这种新的、低成本的光电探测器可以与未来的低成本纳米复合材料探测器集成，通过允许在偏远地区部署许多紧凑的、不显眼的探测器来实现对核/放射性装置或部件材料的探测和阻断--例如走私路线--在这些地区，持续的有人监视是困难的。 这会显着改善国家吗？防止核或放射性袭击的能力。拟议研究的成功执行对科学、技术和社会也具有重要意义，特别是在工业、医疗和其他国防应用方面。 例如，增加灵敏度的光电探测器将减少在计算机断层扫描中暴露于患者的辐射剂量。该项目还将在新兴的可印刷电子产品类别中增加另一类新的低成本电子设备。此外，本科生将从内布拉斯加大学林肯分校的知名本科生研究和推广计划中招募，包括内布拉斯加州材料和纳米科学中心非常成功的本科生创意活动和研究经验计划（UCARE）和本科生研究经验（REU）计划。