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Tissue equivalent curved organic X‐ray detectors utilizing high atomic number polythiophene analogues
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dc.contributor.author | Nanayakkara, M. Prabodhi A. | |
dc.contributor.author | He, Qiao | |
dc.contributor.author | Ruseckas, Arvydas | |
dc.contributor.author | Karalasingam, Anushanth | |
dc.contributor.author | Matjacic, Lidija | |
dc.contributor.author | Masteghin, Mateus G. | |
dc.contributor.author | Basiricò, Laura | |
dc.contributor.author | Fratelli, Ilaria | |
dc.contributor.author | Ciavatti, Andrea | |
dc.contributor.author | Kilbride, Rachel C. | |
dc.contributor.author | Jenatsch, Sandra | |
dc.contributor.author | Parnell, Andrew J. | |
dc.contributor.author | Fraboni, Beatrice | |
dc.contributor.author | Nisbet, Andrew | |
dc.contributor.author | Heeney, Martin | |
dc.contributor.author | Jayawardena, K. D. G. Imalka | |
dc.contributor.author | Silva, S. Ravi P. | |
dc.date.accessioned | 2023-11-15T11:30:28Z | |
dc.date.available | 2023-11-15T11:30:28Z | |
dc.date.issued | 2023-11-02 | |
dc.identifier | 296451290 | |
dc.identifier | 628627f2-d122-4182-8ecd-551a24b774a6 | |
dc.identifier | 85175373713 | |
dc.identifier.citation | Nanayakkara , M P A , He , Q , Ruseckas , A , Karalasingam , A , Matjacic , L , Masteghin , M G , Basiricò , L , Fratelli , I , Ciavatti , A , Kilbride , R C , Jenatsch , S , Parnell , A J , Fraboni , B , Nisbet , A , Heeney , M , Jayawardena , K D G I & Silva , S R P 2023 , ' Tissue equivalent curved organic X‐ray detectors utilizing high atomic number polythiophene analogues ' , Advanced Science , vol. Early View , 2304261 . https://doi.org/10.1002/advs.202304261 | en |
dc.identifier.issn | 2198-3844 | |
dc.identifier.other | Jisc: 1458269 | |
dc.identifier.other | ORCID: /0000-0001-9114-3522/work/146964146 | |
dc.identifier.uri | https://hdl.handle.net/10023/28708 | |
dc.description | Funding: K.D.G.I.J., and S.R.P.S. gratefully acknowledge support from SilverRay Ltd. and EPSRC for this work (EP/R025304/1). M.P.A.N. acknowledges support from Advanced Technology Institute & DoC-CAT studentship, University of Surrey. M.G.M. acknowledges support from the University of Surrey/Advanced Technology Institute via URS/ORS studentship. M.G.M acknowledges support from the Engineering and Physical Research Council (Grant number EP/V036327/1). K.D.G.I.J. acknowledges support from the Equality Foundation of Hong Kong and the Royal Society (RGS∖R1∖211403). L.B., A.C., I.F. and B.F. acknowledge funding from INFN through the CSN5 FIRE project. M.H. acknowledges support from Royal Society and the Wolfson Foundation (Royal Society Wolfson Fellowship). | en |
dc.description.abstract | Organic semiconductors are a promising material candidate for X-ray detection. However, the low atomic number (Z) of organic semiconductors leads to poor X-ray absorption thus restricting their performance. Herein, the authors propose a new strategy for achieving high-sensitivity performance for X-ray detectors based on organic semiconductors modified with high –Z heteroatoms. X-ray detectors are fabricated with p-type organic semiconductors containing selenium heteroatoms (poly(3-hexyl)selenophene (P3HSe)) in blends with an n-type fullerene derivative ([6,6]-Phenyl C71 butyric acid methyl ester (PC70BM). When characterized under 70, 100, 150, and 220 kVp X-ray radiation, these heteroatom-containing detectors displayed a superior performance in terms of sensitivity up to 600 ± 11 nC Gy−1 cm−2 with respect to the bismuth oxide (Bi2O3) nanoparticle (NP) sensitized organic detectors. Despite the lower Z of selenium compared to the NPs typically used, the authors identify a more efficient generation of electron-hole pairs, better charge transfer, and charge transport characteristics in heteroatom-incorporated detectors that result in this breakthrough detector performance. The authors also demonstrate flexible X-ray detectors that can be curved to a radius as low as 2 mm with low deviation in X-ray response under 100 repeated bending cycles while maintaining an industry-standard ultra-low dark current of 0.03 ± 0.01 pA mm−2. | |
dc.format.extent | 17 | |
dc.format.extent | 4249720 | |
dc.language.iso | eng | |
dc.relation.ispartof | Advanced Science | en |
dc.subject | Flexible | en |
dc.subject | Heteroatom | en |
dc.subject | Organic electronics | en |
dc.subject | Photonics | en |
dc.subject | X-ray detectors | en |
dc.subject | QC Physics | en |
dc.subject | RR-NDAS | en |
dc.subject.lcc | QC | en |
dc.title | Tissue equivalent curved organic X‐ray detectors utilizing high atomic number polythiophene analogues | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | 10.1002/advs.202304261 | |
dc.description.status | Peer reviewed | en |
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