A sensitive and robust thin-film x-ray detector using 2D layered perovskite diodes.

ABSTRACT: Solid-state radiation detectors, using crystalline semiconductors to convert radiation photons to electrical charges, outperform other technologies with high detectivity and sensitivity. Here, we demonstrate a thin-film x-ray detector comprised with highly crystalline two-dimensional Ruddlesden-Popper phase layered perovskites fabricated in a fully depleted p-i-n architecture. It shows high diode resistivity of 10¹² ohm·cm in reverse-bias regime leading to a high x-ray detecting sensitivity up to 0.276 C Gy_air ^-1 cm^-3. Such high signal is collected by the built-in potential underpinning operation of primary photocurrent device with robust operation. The detectors generate substantial x-ray photon-induced open-circuit voltages that o

SUBMITTER: Tsai H 

PROVIDER: S-EPMC7148088 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature