Patent ID: 8148760

Claim:
A semiconductor radiation detector device, comprising: a bulk layer of semiconductor material, and on the first surface of the bulk layer in the following order: a modified internal gate layer of semiconductor material of second conductivity type, said modified internal gate layer being configured to store signal charges induced in said bulk layer, a barrier layer of semiconductor material of first conductivity type, pixel dopings of semiconductor material of the second conductivity type, adapted to be coupled to at least one pixel voltage in order to create pixels corresponding to pixel dopings, wherein said barrier layer is configured to separate signal charges stored in said modified internal gate layer from charges in said pixel dopings, a first contact of the first conductivity type, wherein said pixel voltage is defined as a potential difference between the pixel doping and the first contact, and means for reading signal charge from said modified internal gate layer using a floating gate configuration, in which a gate of a readout transistor floats in respect of said pixel voltage.