Compensation and trapping in large bandgap semiconductors: Tuning of the defect system in CdZnTe
2009
Abstract We investigated theoretically the compositional dependences of deep-level ionization energies, and its possible influence on compensation, and photosensitivity in large bandgap semiconductors. Experimentally, it was illustrated in a semi-insulating Cd 1− x Zn x Te ingot grown by the vertical Bridgman method, whose properties can be explained by the increase in the C-band extrema on an absolute energy scale with an increase of the Zn content, and by the nature of a deep-donor level that is contingent upon the host-crystal's defect states.
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