PROBLEM TO BE SOLVED: To provide a mechanism for achieving a radiation detection device having superior characteristics by preventing a decrease in emission from phosphor particles.SOLUTION: A radiation detection device 100 includes: a sensor substrate 105 with a pixel area 113 having a plurality of arrayed pixels 113a for detecting incident light as an electrical signal and a phosphor layer 103 that is formed above the pixel area 113 of the sensor substrate 105 to convert radiation into light. The phosphor layer 103 comprises a plurality of phosphor particles that convert radiation into light and a member which is made of a material that exhibits a refractive index higher than that of the phosphor particles and no luminescence, is at least partially in contact with surfaces of the phosphor particles, and has a diffuse reflectance higher than that of the phosphor particles.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】蛍光体粒子の発光の減少を抑制して、優れた特性を有する放射線検出装置を実現する仕組みを提供する。【解決手段】入射した光を電気信号として検出する画素113aが複数配設された画素領域113が形成されたセンサー基板105と、センサー基板105の画素領域113の上方に配置され、放射線を光に変換する蛍光体層103とを有する放射線検出装置100において、蛍光体層103を、放射線を光に変換する複数の蛍光体粒子と、蛍光体粒子よりも高い屈折率を呈するとともにルミネッセンスを呈さない材料からなり、蛍光体粒子の表面の少なくとも一部と接触し、蛍光体粒子よりも高い拡散反射率を呈する部材とを含み形成する。【選択図】図1
