This invention relates to a new synthetic porous crystalline material, designated MCM-70, having, in its calcined form, the x-ray diffraction pattern of Table 1 above. With such a planar image detector, an improved ratio of active detector surface to total detector surface is achieved. The structure further includes a dielectric layer having a first portion over the interconnect structure and a second portion within the TSV, wherein the first portion and the second portion comprise a same material.