Direct detection of 5-MeV protons by flexible organic thin-film devices

Ilaria Fratelli, Andrea Ciavatti, Enrico Zanazzi, Laura Basiricò, Massimo Chiari, Laura Fabbri, John E. Anthony, Alberto Quaranta, Beatrice Fraboni

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


The direct detection of 5-MeV protons by flexible organic detectors based on thin films is here demonstrated. The organic devices act as a solid-state detector, in which the energy released by the protons within the active layer of the sensor is converted into an electrical current. These sensors can quantitatively and reliably measure the dose of protons impinging on the sensor both in real time and in integration mode. This study shows how to detect and exploit the energy absorbed both by the organic semiconducting layer and by the plastic substrate, allowing to extrapolate information on the present and past irradiation of the detector. The measured sensitivity, S = (5.15 ± 0.13) pC Gy-1, and limit of detection, LOD = (30 ± 6) cGy s-1, of the here proposed detectors assess their efficacy and their potential as proton dosimeters in several fields of application, such as in medical proton therapy.

Original languageEnglish
Article numbereabf4462
JournalScience advances
Issue number16
StatePublished - Apr 14 2021

Bibliographical note

Publisher Copyright:
© 2021 American Association for the Advancement of Science. All rights reserved.

ASJC Scopus subject areas

  • General


Dive into the research topics of 'Direct detection of 5-MeV protons by flexible organic thin-film devices'. Together they form a unique fingerprint.

Cite this