Distribution of Te inclusions in a CdZnTe wafer and their effects on the electrical properties of fabricated devices

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We quantified the size and concentration of Te inclusions along the lateral- and the growth-directions of a ∼6 mm-thick wafer cut axially along the center of a CdZnTe ingot. We fabricated devices, selecting samples from the center slice outward in both directions, and then tested their response to incident X-rays. We employed, in concert, an automated IR transmission microscopic system and a highly collimated synchrotron X-ray source that allowed us to acquire and correlate comprehensive information on Te inclusions and other defects to assess the material factors limiting the performance of CdZnTe detectors.

Keywords
CdZnTe; Detectors; Te inclusions; Dislocations; Pipes; IR transmission
Source:Sciencedirect

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2015-12-11

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