Patent ID: 7679158

Claim:
A radiation image detector, comprising: i) a base plate, ii) a reference electrode constituted of a plurality of electrodes, iii) a recording photoconductive layer, which contains a-Se as a principal constituent, iv) a crystallization preventing layer, which is constituted of an a-Se layer containing at least one kind of element selected from the group consisting of As, Sb, and Bi, and v) a bias electrode, the reference electrode, the recording photoconductive layer, the crystallization preventing layer, and the bias electrode being overlaid in this order on the base plate, a thermal deformation preventing layer being located between the recording photoconductive layer and the crystallization preventing layer, the thermal deformation preventing layer being constituted of an a-Se layer containing at least one kind of specific substance selected from the group consisting of a metal fluoride, a metal oxide, SiO x , and GeO x , where x represents a number satisfying 0.5≦x≦1.5.