X-ray detector and method for producing an x-ray detector

Abstract

An X-ray detector for a tomography device is disclosed, including a plurality of detector elements, each including a photodiode and a scintillator fixed to the optically active surface of the photodiode by a connecting medium. In at least one embodiment, the optically active surface of the photodiode has a nanostructure, which forms a transition region having gradually progressing refractive indices between a refractive index of the connecting medium and a refractive index of the photodiode. Reflections at the optical transition of connecting medium/photodiode and also optical crosstalk to adjacent detector elements are greatly reduced in this way. Such an X-ray detector therefore has a higher luminous efficiency, with which a signal-to-noise ratio and a spatial resolution of the X-ray detector are improved. At least one embodiment of the invention additionally relates to a method for producing an X-ray detector having the properties mentioned.

Dependencies are inferred from the claim text.