Development of Radiation Detectors using Semiconductor Perovskite Materials.

1)研究背景的简要描述，包括潜在的影响：安全和医疗环境中使用的辐射探测器是使用对电离辐射敏感的材料制成的，这些材料会产生光或电荷，这些光或电荷可以被收集来创建有意义的数据，例如诊断X射线图像。最近对钙钛矿材料的研究强调了它们在X射线探测方面的潜力，因为它们具有高吸收系数，优异的电学性能和相对较低的生产成本等优点。这项研究将进一步研究这些特性，以便开发使用钙钛矿材料的3D可打印辐射探测器。这样的检测器在简单、鲁棒的辐射检测器可以用于安全目的的环境中将是有益的，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射治疗等领域，其中患者特定的探测器可能是可行的。2）目的和目标：该项目的最终目标是为使用钙钛矿材料（如CsPbBr 3）制成的功能性辐射探测器奠定基础，该材料可扩展，易于生产，并采用低成本材料制成。我们的目标是开发一种3D打印辐射探测器，通过研究一种载有辐射敏感钙钛矿材料的导电材料的实用性。特别是，我们正在探索使用FDM 3D打印，这种材料既具有导电性，又能在电离辐射的存在下产生电流。我们希望通过将实验室合成的钙钛矿材料添加到商业上可用于3D打印的碳载导电丝中来实现这一目标。我们将与萨里大学合作生产含钙钛矿的导电丝，并广泛地验证其性能。这些细丝将用于3D打印方法，以生产能够检测辐射的设备。其他工作可能包括蒙特卡罗模拟，可以帮助验证基于钙钛矿的辐射探测器的灵敏度。3）研究方法的新奇：本研究将包括实验和模拟方法。实验组件将来自钙钛矿材料的开发，并将其与3D打印细丝相结合。它还将包括用于表征所生产材料的实验。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，因为我们评估了材料的辐射探测能力。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。这个博士生奖学金由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.