Kutniy D. Formation and modification of Me-CdZnTe-Me structures for gamma-radiation detection

Dissertation is devoted to physical and technological aspects of formation of solid-state Me-CdZnTe-Me structures for detection of gamma-radiation and development of methods of purposeful improvement of their electrophysical properties by different modifying influences. Results and novelty: efficiency of gamma-radiation registration in a wide power range by solid-state Me-CdZnTe-Me structures with the ohmic and barrier contacts was estimated; for the first time electrical equivalent scheme was applied for describing of current-voltage characteristic of the solid-state Me-CdZnTe-Me structures; on the basis of this scheme the physical and technological quality criteria of the investigated structures with the ohmic and barrier contacts were defined; for the first time the influence of hydrostatical treatment by pressure of 0,2 GPa on electrophysical and detecting characteristics of solid-state Au-CdZnTe-Au structures was experimentally analyzed. On a basis of the obtained results the technological schemes of production of solid-state Au-CdZnTe-Au structures for gamma-radiation registration in a wide power range were improved. Different modificating treatments were included to the schemes. The Au-CdZnTe-Au structures made under the offered technological patterns are used on "Interatominstrument" Ltd. (Kiev) for creation of dosimetric blocks of gamma-radiation registration.