Patent ID: 6495817
Filing Date: 2002-12-17
Classification: H01L,Y02E

Abstract:
A radiation detecting apparatus having a radiation sensitive semiconductor layer for generating carriers, i.e. electron-hole pairs, in response to incident radiation, a voltage application electrode formed on a front surface of the semiconductor layer for receiving a bias voltage applied thereto, carrier collection electrodes formed on a back surface of the semiconductor layer, and charge storing capacitors and charge reading switching elements connected to the carrier collection electrodes, the switching elements being normally turned off, charges accumulating in the capacitors as a result of the incident radiation being read as radiation detection signals through the switching elements turned on, wherein:said radiation sensitive semiconductor layer is an amorphous semiconductor layer; a carrier selective high resistance film is formed between said amorphous semiconductor layer and said voltage application electrode to entirely cover a surface of said amorphous semiconductor layer; and an electrodeless region of said carrier selective high resistance film extends throughout a circumference of said amorphous semiconductor layer between edges of said voltage application electrode and edges of said amorphous semiconductor layer.