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Molecular Weight Tuning of Organic Semiconductors for Curved Organic–Inorganic Hybrid X‐Ray Detectors
Curved X‐ray detectors have the potential to revolutionize diverse sectors due to benefits such as reduced image distortion and vignetting compared to their planar counterparts. While the use of inorganic semiconductors for curved detectors are restricted by their brittle nature, organic–inorganic h...
Autores principales: | , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8805550/ https://www.ncbi.nlm.nih.gov/pubmed/34755497 http://dx.doi.org/10.1002/advs.202101746 |
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author | Nanayakkara, M. Prabodhi A. Masteghin, Mateus G. Basiricò, Laura Fratelli, Ilaria Ciavatti, Andrea Kilbride, Rachel C. Jenatsch, Sandra Webb, Thomas Richheimer, Filipe Wood, Sebastian Castro, Fernando A. Parnell, Andrew J. Fraboni, Beatrice Jayawardena, K. D. G. Imalka Silva, S. Ravi P. |
author_facet | Nanayakkara, M. Prabodhi A. Masteghin, Mateus G. Basiricò, Laura Fratelli, Ilaria Ciavatti, Andrea Kilbride, Rachel C. Jenatsch, Sandra Webb, Thomas Richheimer, Filipe Wood, Sebastian Castro, Fernando A. Parnell, Andrew J. Fraboni, Beatrice Jayawardena, K. D. G. Imalka Silva, S. Ravi P. |
author_sort | Nanayakkara, M. Prabodhi A. |
collection | PubMed |
description | Curved X‐ray detectors have the potential to revolutionize diverse sectors due to benefits such as reduced image distortion and vignetting compared to their planar counterparts. While the use of inorganic semiconductors for curved detectors are restricted by their brittle nature, organic–inorganic hybrid semiconductors which incorporated bismuth oxide nanoparticles in an organic bulk heterojunction consisting of poly(3‐hexylthiophene‐2,5‐diyl) (P3HT) and [6,6]‐phenyl C71 butyric acid methyl ester (PC(70)BM) are considered to be more promising in this regard. However, the influence of the P3HT molecular weight on the mechanical stability of curved, thick X‐ray detectors remains less well understood. Herein, high P3HT molecular weights (>40 kDa) are identified to allow increased intermolecular bonding and chain entanglements, resulting in X‐ray detectors that can be curved to a radius as low as 1.3 mm with low deviation in X‐ray response under 100 repeated bending cycles while maintaining an industry‐standard dark current of <1 pA mm(−2) and a sensitivity of ≈ 0.17 μC Gy(−1) cm(−2). This study identifies a crucial missing link in the development of curved detectors, namely the importance of the molecular weight of the polymer semiconductors used. |
format | Online Article Text |
id | pubmed-8805550 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-88055502022-02-04 Molecular Weight Tuning of Organic Semiconductors for Curved Organic–Inorganic Hybrid X‐Ray Detectors Nanayakkara, M. Prabodhi A. Masteghin, Mateus G. Basiricò, Laura Fratelli, Ilaria Ciavatti, Andrea Kilbride, Rachel C. Jenatsch, Sandra Webb, Thomas Richheimer, Filipe Wood, Sebastian Castro, Fernando A. Parnell, Andrew J. Fraboni, Beatrice Jayawardena, K. D. G. Imalka Silva, S. Ravi P. Adv Sci (Weinh) Research Articles Curved X‐ray detectors have the potential to revolutionize diverse sectors due to benefits such as reduced image distortion and vignetting compared to their planar counterparts. While the use of inorganic semiconductors for curved detectors are restricted by their brittle nature, organic–inorganic hybrid semiconductors which incorporated bismuth oxide nanoparticles in an organic bulk heterojunction consisting of poly(3‐hexylthiophene‐2,5‐diyl) (P3HT) and [6,6]‐phenyl C71 butyric acid methyl ester (PC(70)BM) are considered to be more promising in this regard. However, the influence of the P3HT molecular weight on the mechanical stability of curved, thick X‐ray detectors remains less well understood. Herein, high P3HT molecular weights (>40 kDa) are identified to allow increased intermolecular bonding and chain entanglements, resulting in X‐ray detectors that can be curved to a radius as low as 1.3 mm with low deviation in X‐ray response under 100 repeated bending cycles while maintaining an industry‐standard dark current of <1 pA mm(−2) and a sensitivity of ≈ 0.17 μC Gy(−1) cm(−2). This study identifies a crucial missing link in the development of curved detectors, namely the importance of the molecular weight of the polymer semiconductors used. John Wiley and Sons Inc. 2021-11-10 /pmc/articles/PMC8805550/ /pubmed/34755497 http://dx.doi.org/10.1002/advs.202101746 Text en © 2021 The Authors. Advanced Science published by Wiley‐VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Articles Nanayakkara, M. Prabodhi A. Masteghin, Mateus G. Basiricò, Laura Fratelli, Ilaria Ciavatti, Andrea Kilbride, Rachel C. Jenatsch, Sandra Webb, Thomas Richheimer, Filipe Wood, Sebastian Castro, Fernando A. Parnell, Andrew J. Fraboni, Beatrice Jayawardena, K. D. G. Imalka Silva, S. Ravi P. Molecular Weight Tuning of Organic Semiconductors for Curved Organic–Inorganic Hybrid X‐Ray Detectors |
title | Molecular Weight Tuning of Organic Semiconductors for Curved Organic–Inorganic Hybrid X‐Ray Detectors |
title_full | Molecular Weight Tuning of Organic Semiconductors for Curved Organic–Inorganic Hybrid X‐Ray Detectors |
title_fullStr | Molecular Weight Tuning of Organic Semiconductors for Curved Organic–Inorganic Hybrid X‐Ray Detectors |
title_full_unstemmed | Molecular Weight Tuning of Organic Semiconductors for Curved Organic–Inorganic Hybrid X‐Ray Detectors |
title_short | Molecular Weight Tuning of Organic Semiconductors for Curved Organic–Inorganic Hybrid X‐Ray Detectors |
title_sort | molecular weight tuning of organic semiconductors for curved organic–inorganic hybrid x‐ray detectors |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8805550/ https://www.ncbi.nlm.nih.gov/pubmed/34755497 http://dx.doi.org/10.1002/advs.202101746 |
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