Ray detector
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United States of America Patent
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Jan 16, 2018
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app pub date -
Jan 4, 2016
filing date -
Aug 14, 2015
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Abstract
Embodiments of the disclosure provide a ray detector, which comprises a ray conversion layer for converting a ray incident on the ray detector into visible light, a photoelectric conversion layer for receiving the visible light and converting it into a charge signal, a pixel array having a plurality of pixels for detecting the charge signal, and a substrate below the photoelectric conversion layer, at least for directly or indirectly carrying the photoelectric conversion layer. The photoelectric conversion layer is made from a two-dimensional semiconductor material. Due to the high carrier mobility of the two-dimensional semiconductor material, it is possible to enable the external signal processing system to detect the charge signal more easily, so that a ray source with low energy can be used for ray detection. Therefore, a ray detector with high sensitivity can be provided, which may reduce the usage cost and be advantageous to saving energy.
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