Ultrasensitive 3D Aerosol-Jet-Printed Perovskite X‑ray Photodetector
No Thumbnail Available
Author
Glushkova, anastasiia
Andricevic, Pavao
Smajda, Rita
Nafradi, Balint
Kollar, Marton
Djokic, Veljko
Arakcheeva, Alla
Forro, Laszlo
Pugin, Raphaël
Horvath, Endre
Abstract
X-ray photon detection is important for a wide
range of applications. The highest demand, however, comes
from medical imaging, which requires cost-effective, highresolution
detectors operating at low-photon flux, therefore
stimulating the search for novel materials and new approaches.
Recently, hybrid halide perovskite CH3NH3PbI3 (MAPbI3) has
attracted considerable attention due to its advantageous
optoelectronic properties and low fabrication costs. The
presence of heavy atoms, providing a high scattering crosssection
for photons, makes this material a perfect candidate for
X-ray detection. Despite the already-successful demonstrations of efficiency in detection, its integration into standard
microelectronics fabrication processes is still pending. Here, we demonstrate a promising method for building X-ray detector
units by 3D aerosol jet printing with a record sensitivity of 2.2 × 108 μC Gyair
−1 cm−2 when detecting 8 keV photons at dose
rates below 1 μGy/s (detection limit 0.12 μGy/s), a 4-fold improvement on the best-in-class devices. An introduction of
MAPbI3-based detection into medical imaging would significantly reduce health hazards related to the strongly ionizing Xrays’
photons.
Publication Reference
ACS Nano 2021, 15, 3, 4077–4084
Year
2021-02