Field-shaping multi-well avalanche detector for direct conversion amorphous selenium

摘要

A field shaping multi-well avalanche detector and method for fabrication thereof are disclosed. The field shaping multi-well avalanche detector provides stable avalanche multiplication gain in direct conversion amorphous selenium radiation detectors. The detector provides stable avalanche multiplication gain by eliminating field hot-spots using high-density avalanche wells with insulated wells and field-shaping within each well.

主权项

1. A detector comprising:
a common electrode; a pixel electrode; a plurality of insulators; a plurality of wells; a substrate; a plurality of first grid electrodes; a plurality of second grid electrodes; and an electron blocking and hole transport layer provided on the plurality of insulators and the pixel electrode, wherein amorphous selenium (a-Se) separates the plurality of insulators from the common electrode, wherein a pair of a first grid electrode and a second grid electrode is provided within each of the plurality of insulators, and wherein the plurality of first grid electrodes and the plurality of second grid electrodes form micro-strip grids with the plurality of wells therebetween.