Avalanche radiation detector

摘要

The avalanche radiation detector has a readout contact (A) on the front surface (VS) surrounded by a central avalanche region (AB). The central avalanche region consists of an n-doped region (DN) surrounded by an annular p-doped control electrode (R). The control electrode sets the electrical field strength in the central avalanche region. It sits on a continuous p-doped layer (DP) with a further p-doped ring (R') underneath. There is a thick n-doped semiconductor substrate (HK) under the central avalanche region. Radiation (h.f) enters the rear side (RS) of the detector through a p-doped electrode (RK).