| 摘要 |
A radiation detector comprises a voltage applying electrode, a photo-conductor layer, and a charge collecting electrode, which are overlaid one upon another. A selective charge transporting layer is located between the voltage applying electrode and the photo-conductor layer, the selective charge transporting layer having characteristics such that the selective charge transporting layer blocks electric charges having a polarity identical with the polarity of the voltage applying electrode and transports electric charges having a polarity opposite to the polarity of the voltage applying electrode. The selective charge transporting layer takes on the form of a thick film at a position corresponding to an edge region of the voltage applying electrode.
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