Halide perovskites for direct conversion megavoltage X-ray detectors

Simple item page
dc.contributor.authorKundu, Soumya
dc.contributor.authorO’Connell, Jericho
dc.contributor.authorHart, Alexander
dc.contributor.authorRichtsmeier, Devon
dc.contributor.authorBazalova-Carter, Magdalena
dc.contributor.authorSaidaminov, Makhsud I.
dc.date.accessioned2025-01-23T18:38:36Z
dc.date.available2025-01-23T18:38:36Z
dc.date.issued2022
dc.description.abstractMegavoltage (MV) X-ray detectors used in cancer treatment either suffer from low sensitivity (scintillators) or prohibitively high cost (direct conversion). Here solution-processed direct-conversion MV X-ray detectors are demonstrated based on halide perovskites. The authors’ prototype devices show a sensitivity of ≈0.7 µC Gyair-¹ cm-², high photon-to-carrier conversion efficiency of 42 500%, and a signal-to-noise ratio of ≈1750 to 6 MV X-ray beam of a medical linear accelerator. The detector shows a contrast of over -1.5% per cm of solid water, comparable to state-of-art commercial gadolinium oxysulfide (GOS) MV X-ray scintillators. This work demonstrates the first prototype of low-cost and efficient direct-conversion MV X-ray detectors.
dc.description.reviewstatusReviewed
dc.description.scholarlevelFaculty
dc.description.sponsorshipThis work was supported by New Frontiers in Research Fund—Exploration and University of Victoria Collaborative Health Grant. The authors thank BC Cancer (Provincial Health Services Authority in British Columbia, Canada) for providing the testing facility. The authors thank Jon Eby for developing an X-ray shutter system which enabled high frequency measurements.
dc.identifier.citationKundu, S., O’Connell, J., Hart, A., Richtsmeier, D., Bazalova-Carter, M., & Saidaminov, M. I. (2022). Halide perovskites for direct conversion megavoltage x-ray detectors. Advanced Electronic Materials, 8(12). https://doi.org/10.1002/aelm.202200640
dc.identifier.urihttps://doi.org/10.1002/aelm.202200640
dc.identifier.urihttps://hdl.handle.net/1828/20988
dc.language.isoen
dc.publisherAdvanced Electronic Materials
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.departmentDepartment of Chemistry
dc.subject.departmentDepartment of Physics and Astronomy
dc.titleHalide perovskites for direct conversion megavoltage X-ray detectors
dc.typeArticle

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
kundu_soumya_AdvElectronMater_2022.pdf
Size:
5.04 MB
Format:
Adobe Portable Document Format
Download

Collections

Faculty and Staff Publications
 
University of Victoria Libraries

We acknowledge and respect the Lək̓ʷəŋən (Songhees and Esquimalt) Peoples on whose territory the university stands, and the Lək̓ʷəŋən and W̱SÁNEĆ Peoples whose historical relationships with the land continue to this day.