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Self-powered flexible all-perovskite X-ray detectors with high sensitivity and fast response.


ABSTRACT: Perovskite materials have demonstrated superior performance in many aspects of optoelectronic applications including X-ray scintillation, photovoltaic, photodetection, and so on. In this work, we demonstrate a self-powered flexible all-perovskite X-ray detector with high sensitivity and fast response, which can be realized by integrating CsPbBr3 perovskite nanocrystals (PNCs) as the X-ray scintillator with a CH3NH3PbI3 perovskite photodetector. The PNCs scintillator exhibits ultra-fast light decay of 2.81 ns, while the perovskite photodetector gives a fast response time of ∼0.3 μs and high-specific detectivity of ∼2.4×1012 Jones. The synergistic effect of these two components ultimately leads to a self-powered flexible all-perovskite X-ray detector that delivers high sensitivity of 600-1,270 μC/mGyaircm3 under X-ray irradiation and fast radiation-to-current response time.

SUBMITTER: Heo JH 

PROVIDER: S-EPMC8365385 | biostudies-literature |

REPOSITORIES: biostudies-literature

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