GaAs for X-imaging and particle detectors

Among prospect semiconductor materials for ionizing radiation detectors, GaAs looks very promising due to it high carrier mobility, wide band gap and high density. A comparative analysis of physical and electrical characteristics of GaAs semi-insulating layers (SI-GaAs) fabricated by means of different technological methods is given in this work. The main parameters of detector structures and multi-element detectors based on SI-GaAs are presented.