(BZA)2PbBr4:光子计数计算机断层扫描探测器的潜在闪烁体

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2023-11-01 DOI:10.1016/j.jlumin.2023.120012

J. Jasper van Blaaderen , Stefan van der Sar , Djulia Onggo , Md Abdul K. Sheikh , Dennis R. Schaart , Muhammad D. Birowosuto , Pieter Dorenbos

引用次数: 3

摘要

由于近年来探测器技术的发展，光子计数计算机断层扫描（PCCT）已成为一种迅速兴起的医学成像技术。目前的PCCT系统依赖于使用CdTe、CZT或Si半导体探测器将X射线光子直接转换为电荷脉冲。使用与硅光电倍增管（SiPM）耦合的超快闪烁体进行间接检测提供了一种潜在的更直接、更具成本效益的替代方案。在这项工作中，一种新的2D钙钛矿闪烁体，苄基溴化铅（BZA）2PbBr4，被实验表征为温度的函数。该材料在室温下的X射线激发下表现出4.2ns的衰变时间和3700个光子/MeV的光产额。Van der Sar等人开发的模拟工具用于对基于SiPM的（BZA）2PbBr4探测器产生的脉冲串进行建模。（BZA）2PbBr4的快速衰减时间导致了出色的计数率性能以及模拟脉冲中非常低的统计波动。（BZA）2PbBr4的这些特征，加上其成本效益高的合成，使（BZA的）2PbBr4在PCCT中非常有前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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(BZA)2PbBr4: A potential scintillator for photon-counting computed tomography detectors

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.