Development of Radiation Detectors using Semiconductor Perovskite Materials.

1)研究背景的简要描述，包括潜在影响：用于安全和医疗环境的辐射探测器是使用对电离辐射敏感的材料制成的，电离辐射产生光或电荷，可以收集以创建有意义的数据，如诊断x射线图像。最近对钙钛矿材料的研究强调了它们在x射线检测方面的潜力，因为它们具有高吸收系数、优异的电性能和相对较低的生产成本等优点。本研究将进一步研究这些特性，以开发使用钙钛矿材料的3D可打印辐射探测器。这种探测器在简单、坚固的辐射探测器可用于安全目的的环境中是有益的，例如在港口或隧道中监测电离辐射。未来还可以看到3D打印探测器应用于放疗等领域，在这些领域，可能需要针对患者的探测器。2)目的和目标：该项目的最终目标是为使用钙钛矿材料（如CsPbBr3）制成的功能辐射探测器奠定基础，该探测器可扩展，易于生产，并且使用低成本材料制成。我们的目标是通过研究装载放射性敏感钙钛矿材料的导电材料的实用性，开发一种3D可打印的辐射探测器。特别是，我们正在探索使用FDM 3D打印的灯丝，这种灯丝既导电，又会在电离辐射的存在下产生电流。我们希望通过将在实验室合成的钙钛矿材料添加到可用于3D打印的碳负载导电细丝中来实现这一点。我们将与萨里大学合作，生产含钙钛矿的导电细丝，并广泛表征其性能。这些细丝稍后将用于3D打印方法，以生产能够检测辐射的设备。额外的工作可能包括蒙特卡罗模拟，可以帮助表征钙钛矿辐射探测器的灵敏度。3)研究方法的新颖性：本研究将包括实验和模拟方法。实验部件将来自钙钛矿材料的开发，并将这些材料与3D打印细丝相结合。它还将包括表征所生产材料的实验。当我们评估材料的辐射探测能力时，可能的模拟工作将包括计算沉积到钙钛矿负载材料中的剂量。4)与STFC的战略和研究领域保持一致：STFC支持物理和材料科学的研究，这项研究将扩大我们对钙钛矿材料及其现实世界安全和医疗应用的了解。5)任何涉及的公司或合作者：该博士研究生由NuSec（核安全科学网络）资助。我们将与萨里大学合作，他们将允许我们进入他们的实验室进行钙钛矿合成，以及他们的一些定制材料表征设置。

1) Brief description of the context of the research including potential impact:Radiation detectors used in security and medical contexts are made using materials sensitive to ionisation radiation that produce light or an electrical charge that can be gathered to create meaningful data such as a diagnostic x-ray image. Recent studies of perovskite materials have highlighted their potential for x-ray detection due to their high absorption coefficients, excellent electrical properties and relatively low cost of production among other things.This study will further investigate these properties in order to develop a 3D printable radiation detector using perovskite materials. Such a detector would be beneficial in environments where simple, robust radiation detectors could be used for security purposes, e.g. monitoring ionising radiation at ports or in a tunnel. The future could also see 3D printable detectors applied in fields such as radiotherapy where patient-specific detectors may be desirable.2) Aims and Objectives:The ultimate objective of this project is to lay the foundations for a functioning radiation detector made using perovskite material such as CsPbBr3 that is scalable, easily producible and made with low-cost materials. We aim to develop a 3D printable radiation detector by investigating the practicality of a conductive material that has been loaded with radiosensitive perovskite material.In particular, we are exploring the use of FDM 3D printing with a filament that is both conductive and will produce an electric current in the presence of ionising radiation. We hope to do this by adding perovskite material that has been synthesised in a lab to the carbon-loaded conductive filaments commercially available for 3D printing.We will be working with the University of Surrey to produce perovskite-containing conductive filaments and to extensively characterise their properties. These filaments will later be used for 3D printing methods in order to produce a device capable of radiation detection.Additional work may include Monte Carlo simulations that can help characterise the sensitivity of Perovskite-based radiation detectors.3) Novelty of Research Methodology:This study will include experimental and simulation methodologies. Experimental components will come from the development of perovskite materials and combining these with 3D printable filaments. It will also include experiments for characterising the materials produced.Possible simulation work will involve calculations of dose deposited into the perovskite-loaded material as we assess the material's radiation detecting capabilities.4) Alignment to STFC's strategies and research areas:STFC supports research in physics and materials science and this study will expand our knowledge of perovskite materials and their real-world security and medical applications.5) Any companies or collaborators involved:This PhD studentship has been funded by NuSec (Nuclear Security Science Network). We will be collaborating with the University of Surrey, who will be allowing us access to their laboratory for the purposes of Perovskite synthesis, as well as some of their custom material characterisation setups.