Photodetector array

Abstract

There is provide a photodetector array of a stacked film, which comprises a plurality of first electrodes formed on a substrate and extending in parallel in a first direction, a plurality of second electrodes extending in parallel in a second direction crossing the first electrodes, a first organic thin film diode and a second organic thin film diode disposed between each of the first electrodes and each of the second electrodes, and an intermediate connection electrode layer serving as a common anode or a common cathode. The intermediate connection electrode layer connects the first organic thin film diode and the second organic thin film diode by backward-diode connection. At least either the first electrodes or the second electrodes are transparent with light passing therethrough, the first organic thin film diode is a photoresponsive organic diode, and the second organic thin film diode is an organic rectifier diode. The intermediate connection electrode layer operates so that, with respect to the first organic thin film diode and the second organic thin film diode connected thereto, positive holes are transferred as the common anode and electrons are transferred as the common cathode. With this photodetector array, a sheet-type two-dimensional optical image scanner that has a large surface area, and is flexible and bendable, can be easily produced using an organic semiconductor material.

Dependencies are inferred from the claim text.