Electron gas grid semiconductor radiation detectors

摘要: An electron gas grid semiconductor radiation detector (EGGSRAD) useful for gamma-ray and x-ray spectrometers imaging systems is described. The employs doping of the variation material to form a two-dimensional gas, allow transistor action within detector. This provides superior energy resolution detection sensitivity over conventional “electron-only” detectors which utilize electrode near anode. In first embodiment, EGGSRAD incorporates delta-doped layers adjacent anode produce an internal free well external can be attached. second quantum formed between two layers, forms Two other embodiments are similar embodiment involve graded bandgap by changing composition last increase or decrease conduction band layers.