Self-powered In2Se3/PtSe2 photodetector with broadband and fast response

Article Multidisciplinary Sciences

Solution-grown BiI/BiI3 van der Waals heterostructures for sensitive X-ray detection

Renzhong Zhuang et al.

Summary: In order to reduce radiation health risks, X-ray detectors need to be operated at minimal doses during X-ray security examination or medical inspection, which requires high sensitivity and low detection limits. This study presents the realization of highly sensitive X-ray detectors based on an environmentally friendly solution-grown thick BiI/BiI3/BiI van der Waals heterostructure. These detectors show anisotropic X-ray detection response, with a sensitivity of up to 4.3 x 10(4) μC Gy(-1) cm(-2) and a detection limit as low as 34 nGy s(-1). Additionally, the BixIy detectors demonstrate high environmental and hard radiation stabilities.

NATURE COMMUNICATIONS (2023)

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Article Chemistry, Physical

Ultra-sensitive flexible Ga2O3 solar-blind photodetector array realized via ultra-thin absorbing medium

Yancheng Chen et al.

Summary: A Ga2O3 solar-blind photodetector with ultra-thin absorbing medium and multiple-beam interference structure has been developed for high-performance detection of ultra-weak signals, showing little decay in performance even at low light intensities. The flexible photodetector array can perform functions such as imaging, spatial distribution of light source intensity, and real-time light trajectory detection. These results provide a promising route for high-performance solar-blind photodetectors for ultra-weak light detection.

NANO RESEARCH (2022)

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Article Materials Science, Multidisciplinary

Ultrasensitive WSe2/α-In2Se3 NIR Photodetector Based on Ferroelectric Gating Effect

Hyeok Jun Jin et al.

Summary: The study developed a photodetector utilizing a 2D semiconductor and 2D ferroelectric semiconductor to enhance sensitivity in the infrared wavelength range. Through the ferroelectric gating effect, dark current was suppressed and photoresponsivity was increased, contributing to an ultrasensitive characteristic in the near-infrared wavelength range.

ADVANCED MATERIALS TECHNOLOGIES (2021)

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Article Nanoscience & Nanotechnology