Organic radiation detectors for real-time dosimetry

Zachary A. Lamport; Marco R. Cavallari; Michael J. Bardash; Ioannis Kymissis

doi:10.1117/12.2597183

3 August 2021 Organic radiation detectors for real-time dosimetry

Zachary A. Lamport, Marco R. Cavallari, Michael J. Bardash, Ioannis Kymissis

Proceedings Volume 11810, Organic and Hybrid Sensors and Bioelectronics XIV; 118100H (2021) https://doi.org/10.1117/12.2597183
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States

Abstract

Here, we report on an all-organic solid-state radiation dosimeter patterned onto a plastic substrate that allows for real-time measurements communicated over WiFi. The “sense” area and the conductive traces are made using low-conductivity PEDOT:PSS, and measurements are read out by a low-current op-amp. As the detector is subjected to radiation, the ionized air, substrate, and sense area cause a charge accumulation which is then read out as a voltage from the op-amp. OFETs on either side of the sense area allow for the charge to be cleared, allowing for accurate dose measurement without saturation. Additionally, the inclusion of a PEDOT:PSS ground plane as the first layer on the PEN substrate helps to shield the sensor itself from extraneous static. For X-rays, the limit of detection is approximately 5 mRad/min, and for gamma rays the limit is approximately 5 mRad/hr. Through appropriate control of the clearing OFETs, the device is quickly reset to allow for a continuous measurement.

Conference Presentation

Citation Download Citation

Zachary A. Lamport, Marco R. Cavallari, Michael J. Bardash, and Ioannis Kymissis "Organic radiation detectors for real-time dosimetry", Proc. SPIE 11810, Organic and Hybrid Sensors and Bioelectronics XIV, 118100H (3 August 2021); https://doi.org/10.1117/12.2597183

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available