Abstract

A geometrically weighted trapezoidal CdZnTe detector has been probed along the bottom and sides with a collimated 60 keV 241 Am gamma-ray source. The results clearly show that electrons are being transported to the anode from all locations along the device bottom as well as along the sides below the grid area. Spectral differences are apparent, and the best charge transport originates from areas irradiated along the device cathode. Spectral differences are suspected to result from two major effects; charge transport interference from material non-uniformity effects and internal electric field effects.

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