Modeling of CdZnTe properties and parameters of γ-radiation detectors based on it

Abstract

By means of computer modeling, the carrier lifetime and mobility, as well as the resistivity of Cd_xZn_1–xTe:Cl material, were investigated in order to determine the optimal combination of these properties and the molar fraction of CdTe that would provide maximum charge collection efficiency in γ-radiation detectors based on this material. A typical impurity composition, independent of the preparation method, was taken as the starting point. It is shown that the studied material must be inhomogeneous, and an approximate distribution of its properties in the interelectrode space of the detector has been established.