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- W4225103621 abstract "In this paper, we develop a novel energy-resolved X-ray detector based on the CuIn1-xGaxSe2 (CIGS) photoelectric conversion layer. The effect of Ga content on the crystal phase and the dark current of the photoelectric conversion layer has been studied. Furthermore, the photoelectric conversion capability of the CIGS thin film layer is optimized by the surface passivation process including the sulfurization treatment and Al2O3 treatment, achieving a low dark current of 90 nA/cm2 and high specific detectivity of 2.3 × 1014 Jones. The optimized CIGS photoelectric conversion layer and the Gd2O2S scintillator are used in the X-ray detector. The directions of the incident X-ray propagation and the induced fluorescence signal propagation are mutually perpendicular, thus the effective thickness of the scintillator is substantially increased without sacrificing the resolution of the sensor. In addition, the X-ray response of the detector is evaluated, the pixels at different X-ray penetration depths show obvious differences in absorption, contributing its ability of energy-resolution. The sensitivity of the prepared indirect X-ray detector is ∼8 μCGyair−1cm2 at an irradiation intensity of ∼6.5 mGyair/s. This work offers a new strategy to fabricate high performance energy-resolved X-ray detectors." @default.
- W4225103621 created "2022-04-30" @default.
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- W4225103621 date "2022-07-01" @default.
- W4225103621 modified "2023-10-16" @default.
- W4225103621 title "A novel energy-resolved radiation detector based on the optimized CIGS photoelectric absorption layer" @default.
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- W4225103621 doi "https://doi.org/10.1016/j.jpowsour.2022.231520" @default.
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