So if I got things right, the X-ray converter would have to be many layers of p-n junctions that work like a stack of highly transparent solar cells on top of each other.
But the concern is that the energetic X-rays themselves would be destroying the delicate layered structure by breaking important chemical bonds, shorting out the junctions and rendering the expensive device useless after a short time of exposure?

But our hopes are in the fact that X_ray conversion is such a novel field of research that we cannot yet rely on existing knowledge to either confirm or deny its feasability.