Upgraded CdZnTe Based on the Infrared Attenuation Spectrum
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According to the infrared attenuation spectrum, we can know the conduction type and major point defect of CdZnTe crystals. Based on point defect modelling, an appropriate modus of atmosphere annealing was described in this paper. In this paper, annealing with Cd pressure control technology was used to upgrade p-CdZnTe and n-CdZnTe, respectively. Characterizations reveal that the optical and electrical performance of the CZT crystals is patently improved after annealing. Employment of the infrared attenuation spectrum as the annealing guideline has been verified to be feasible and effectual in this paper.
KeywordsCdZnTe infrared attenuation spectrum free carrier absorption atmosphere annealing
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This work was financially supported by the National Natural Science Foundation of China (Nos. 11675099, 11775139 and 11505109), Innovation Program of Shanghai Municipal Education Commission, China (No. 12ZZ096), and the Shanghai Leading Academic Discipline Project of Shanghai Municipal Education Commission (No. S30107).
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