PHOTOELECTRIC CONVERSION DEVICE AND RADIOGRAPHIC IMAGING DEVICE

摘要

Provided are a photoelectric conversion device having an improved S/N value when an exposure quantity is small, and a radiographic imaging device provided with the photoelectric conversion device. A photoelectric conversion element in the photoelectric conversion device has at least a first electrode, a photoelectric conversion layer and a second electrode on a substrate. In the photoelectric conversion element, a first voltage is constantly applied to the first electrode, and after initialization is performed by applying a second voltage to the second electrode, the second electrode is permitted to be in a floating status, and an electron or a hole generated by light inputted to the photoelectric conversion layer is read from the second electrode. In the photoelectric conversion element, a third electrode is arranged on the same surface as the second electrode, so as to surround the second electrode. When the first voltage is higher than the second voltage, a voltage higher than the second voltage is constantly applied to the third electrode as a third voltage, and when the second voltage is higher than the first voltage, a voltage higher than the first voltage is constantly applied to the third electrode as the third voltage.