Project Acronym: PROXIMA

Full title: Portable RObust X-ray IMAge detector based on a flexible TFT array with organic and metal oxide semiconductors and an X-ray convertor.

Project duration: 31 months (2017-11-01 until 2020-05-31 – revised)
Coordinator: Agfa N.V., Septestraat 27, B-2640 Mortsel, Belgium


Project website address: n/a

Executive summary

A completely new and disruptive X-ray photonic sensor for medical applications will be demonstrated by PROXIMA presenting the following advantages over state of the art: 1) low-cost to facilitate its adoption by low-budget hospitals and in developing countries where healthcare budgets are limited, 2) lightweight and robust allowing it to be easily carried to point of care and remote trauma 3) of high image quality in the low exposure limit to allow for dose reduction 4) conformable to enable advantages in cone-beam CT, tomosynthesis, dental or NDT applications. These benefits will arise by manufacturing the active matrix arrays with a flexible complementary and hybrid thin-film transistor technology consisting of organic and non-critical metal oxide semiconductors with organic dielectrics on plastic substrates and combine it with a flexible X-ray photoconductor.

Main work packages are: 1) the deposition of the n-type metal oxide semiconductor on the plastic substrate, and its integration with the p-type organic semiconductor to form a CMOS type backplane; 2) the development of a pigment in binder (PiB) coated X-ray photoconductor layer and its integration on the backplane; 3) the development of prototype read-out hardware and software to image-wise read-out the X-ray detector prototype. The final demonstrator, as well as intermediate demonstrators based on the combination of an organic p-type backplane and a PiB X-ray photoconductor or a hybrid complementary logic backplane combined with an organic photodiode and a flexible X-ray scintillator as intermediate test frame for the final concept will be evaluated in a medical relevant environment.