Hybrid semiconductor radiation detectors using conductive polymers

Organic semiconductor radiation detectors have been developed using conductive polymers as sensor materials. Unlike the commonly used inorganic semiconductor detectors, the use of organic semiconductor detectors has facilitated large-scale fabrication of cheap and flexible detectors. In this study, a sensor is fabricated to improve the radiation sensitivity by combining an n-type titanium oxide (TiO2) semiconductor as an additive with a p-type polyaniline (Pani) semiconductor. A maximum detection efficiency of 10% for β -rays was achieved using a new comb-type electrode. We report the performance of the newly developed hybrid sensors, such as the incident rate dependence of detection efficiency and the long-term stability.