A critical consideration of X-ray detectors based on Ga2O3: excitation, carrier transport mechanisms and performance standardization

[2607.12638] A critical consideration of X-ray detectors based on Ga2O3: excitation, carrier transport mechanisms and performance standardization Skip to main content Search Submit Donate Log in Physics > Instrumentation and Detectors arXiv:2607.12638 (physics) [Submitted on 14 Jul 2026] Title: A critical consideration of X-ray detectors based on Ga2O3: excitation, carrier transport mechanisms and performance standardization Authors: Alfred Moore , Daniel A Lamb , Lijie Li , Oliver Fox , Kawal Sawhney , Ciaran Llewelyn , Jon E Evans , Saqib Rafique , Tiantian Chai , John Harrington , Zabeada Aslam , Andrew P Brown , Rik Drummond-Brydson , Yaonan Hou View PDF HTML (experimental) Abstract: X-ray detection underpins a wide range of applications in medicine, security, industrial inspection, scientific research for non-destructive imaging and material analysis. The rapid development of Ga2O3-based X-ray detectors offers a promising pathway toward next-generation detectors with high sensitivity, low noise, and harsh environment applications, benefiting from its intrinsic material properties such as high density, wide band gap energy, and high thermal-chemical stability. However, the underlying device operating mechanisms, including both carrier excitation and transport processes, have not yet been adequately studied, largely due to the misuse of X-ray sources in previous studies. Besides, benchmarking of device characteristics has been problematic due to experimental or data analysis issues, as well as misunderstandings of the applied equations associated with parameter definitions. In this work, we have designed and performed an instructive research work based on epitaxial beta-Ga2O3:Si and its planar Schottky detectors, measured with energy-tuneable monochromatic X-ray beams on a synchrotron beamline, clarifying the device excitation and carrier transport mechanisms with properly benchmarked device performance. In the end, we propose a set of protocols for correctly measuring and analysing the device performance. The proposed protocols are broadly applicable and can be readily extended to other semiconductor X-ray detectors. Comments: 21 pages, 6 figures Subjects: Instrumentation and Detectors (physics.ins-det) ; Materials Science (cond-mat.mtrl-sci) Cite as: arXiv:2607.12638 [physics.ins-det] (or arXiv:2607.12638v1 [physics.ins-det] for this version) https://doi.org/10.48550/arXiv.2607.12638 Focus to learn more arXiv-issued DOI via DataCite Related DOI : https://doi.org/10.1063/5.0346461 Focus to learn more DOI(s) linking to related resources Submission history From: Lijie Li [ view email ] [v1] Tue, 14 Jul 2026 11:16:30 UTC (1,112 KB) Full-text links: Access Paper: View PDF HTML (experimental) TeX Source view license Current browse context: physics.ins-det < prev | next > new | recent | 2026-07 Change to browse by: cond-mat cond-mat.mtrl-sci physics References & Citations INSPIRE HEP SciX Google Scholar Semantic Scholar export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab)

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