Organic radiation detectors

有机辐射探测器

• 批准号: ST/F006667/1
• 负责人: Paul Sellin
• 金额: $ 10.81万
• 依托单位: University of Surrey
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FF006667%2F1
• 关键词: Organic; radiation; detectors

Organic materials are currently poised to revolutionise a wide range of technologies, covering applications which include carbon-based electronics, polymer-based displays, biological and chemical sensors, and smart materials. Such materials, including conjugated polymer and carbon nanotube (CNT) nanocomposites, potentially offer a range of unique properties that challenge conventional semiconductor based devices and technologies. Organic materials also potentially offer significant advantages for use as radiation detectors, although very little work has been done in this area to date. Some of the key advantages of organic radiation detectors include; a low-cost large-area detector technology, good radiation hardness, and the ability to fabricate organic detectors in unconventional geometries such as flexible sheets. There has been very little work done to date to develop organic radiation detectors to date - with the exception of a 18 month pilot study carried out by the applicants to demonstrate the feasibility of organic detector devices. This project produced two key results from test detectors fabricated from conjugated semiconducting polymer; (1) the successful fabrication of 'thick' (eg. up to 20 um) Schottky diodes with good rectifying electrical properties, (2) the high sensitivity of these devices to X-ray irradiation. These devices did not operate in photon counting mode, which was due primarily to limitations in the charge transport performance of the polymer layers. The work resulted in an international patent filing and publication in Applied Physics Letters. In this proposal we will carry out a targeted 12 month study to study a range of polymer materials specifically in terms of their charge transport properties and their sensitivity to radiation. The principle aim is to identify, from the latest generation of polymers, the best candidate materials for detector device fabrication. It is then anticipated to apply for a full PIPSS award to carry out the commercialisation of this technology.

有机材料目前正准备彻底改变各种技术，涵盖碳基电子产品，聚合物显示器，生物和化学传感器以及智能材料等应用。这些材料，包括共轭聚合物和碳纳米管（CNT）纳米复合材料，潜在地提供了一系列独特的性能，挑战了传统的基于半导体的器件和技术。有机材料还潜在地提供用作辐射探测器的显著优点，尽管迄今为止在该领域中所做的工作很少。有机辐射探测器的一些关键优势包括：低成本的大面积探测器技术，良好的辐射硬度，以及以非常规几何形状（如柔性片材）制造有机探测器的能力。迄今为止，除了申请人进行的18个月的试点研究以证明有机检测器设备的可行性之外，迄今为止在开发有机辐射检测器方面所做的工作很少。该项目产生了两个关键结果，从测试探测器制造的共轭半导体聚合物;（1）成功制造的'厚'（如。高达20 μ m）肖特基二极管具有良好的整流电性能，（2）这些设备的高灵敏度的X射线照射。这些装置不以光子计数模式操作，这主要是由于聚合物层的电荷传输性能的限制。这项工作导致了一项国际专利申请，并在应用物理快报上发表。在本提案中，我们将进行一项为期12个月的有针对性的研究，以研究一系列聚合物材料的电荷传输特性和对辐射的敏感性。主要目的是从最新一代聚合物中确定用于检测器设备制造的最佳候选材料。然后，预计将申请一个完整的PIPSS奖，以进行这项技术的商业化。