| 摘要 |
A photo-conductive layer for constituting a radiation imaging panel, which photo-conductive layer is capable of recording radiation image information as an electrostatic latent image, contains Bi<SUB>4</SUB>M<SUB>3</SUB>O<SUB>12</SUB>, in which M represents at least one kind of element selected from the group consisting of Ge, Si, and Ti. The photo-conductive layer may be formed with a coating technique or as a sintered film. The photo-conductive layer has a large effect of collecting formed electric charges and enhanced sensitivity, and is capable of yielding an image with good graininess characteristics.
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