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.

该项目的目的是开发一种极高的，低噪声的有机光电检测器，以替代低成本辐射探测器系统中的昂贵光电倍增管（PMT）。所提出的设备将使用入射光子作为开关阀来控制有机场效应晶体管的源输出电流。这些光电探测器允许通过在有机半导体 - 电极界面上被困的电气诱导的电荷注入从电极从电极注入到半导体通道的孔子。由于被捕获的电子被入射光子注入，因此每个吸收的光子将导致设备的大量输出电流变化，从而产生很大的明显增益。拟议的光电探测器将提供一种新的机制，以实现与相对低偏差驱动的PMT相当的高增益和低噪声，并且由于较高的特征，包括紧凑的尺寸，稳健性，高增益，低噪声，低噪声，低功耗，低功耗，低成本，以及对闪烁体的光子发射的出色响应性，具有替换PMT的巨大潜力。该项目的成功将产生新一代的固态光电探测器，以实现NSF/国内核检测办公室（DNDO）的资本投资成本目标小于每个检测器/传感器的100美元。 然后，可以将这种新的低成本光电探测器与未来的低成本纳米复合闪光灯集成在一起，从而通过允许在偏远地区部署许多紧凑的，不受欢迎的探测器来实现核/放射学设备或组件材料的检测和隔离，例如，在奔跑的路线上 - 在某些情况下很难进行偷运途径。 这将大大提高国家预防核或放射学攻击的能力。成功执行拟议的研究也将对科学，技术和社会，特别是工业，医疗和其他国防应用具有重要意义。 例如，提高灵敏度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打印电子产品类别中添加另一个新类别的低成本电子设备。此外，本科生将从内布拉斯加州林肯大学的知名本科研究和外展计划中招募，包括内布拉斯加州材料和纳米科学中心的内布拉斯加州本科生（REU）本科生（REU）计划的非常成功的本科创意活动和研究经验（REU）。