A radiation detector assembly, in some aspects, includes a detector
substrate and a detector matrix array disposed on the detector substrate.
A scintillator material is disposed on the detector matrix array and a
moisture resistant layer is disposed on the scintillator material. The
moisture resistant layer includes a plurality of sub-layers. The assembly
also includes a protective cover disposed over the detector substrate and
the moisture resistant layer, and an adhesive material disposed between
the detector substrate and the cover. The adhesive material in some
configurations is disposed so that it is not in contact with the moisture
resistant layer.