| 摘要 |
PROBLEM TO BE SOLVED: To maintain the electrical characteristics (dark current, defect) of a radiation detector for the long term. SOLUTION: A radiation image detector is formed by laminating a bias electrode 8 for transmitting the electromagnetic wave for recording which carries an image information, a photoconductive layer 5 for recording whose main component being a-Se for generating charges by the irradiation with the electromagnetic wave for recording transmitted through the bias electrode 8, a charge accumulator for accumulating the generated charges, a plurality of reference electrodes 2, and a substrate 1 in this order. In the detector, a first intermediate layer 7 consisting of antimony sulfide, and a second intermediate layer 6 consisting of an a-Se layer containing at least one species from among an alkali metal fluoride, an alkaline earth metal fluoride, an alkali metal oxide, an alkaline earth metal oxide, SiO<SB>x</SB>, GeO<SB>x</SB>(0.5≤x≤1.5 for both x) as a specific material, are laminated and provided between the bias electrode 8 and the photoconductive layer 5 for recording so that the second intermediate layer 6 faces the photoconductive layer 5 for recording, and the average concentration of the specific material in the second intermediate layer 6 is made to be≥0.0003 mol% and≤0.003 mol%. COPYRIGHT: (C)2009,JPO&INPIT
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