Abstract
A deep level in Te-doped Al0.5In0.5P, grown by metal organic chemical vapor deposition, has been studied by deep level transient spectroscopy. The thermal activation energy was 0.24 eV, and the trap concentration was related to Te-dopant concentration. The deep level concentration strongly increased with elevating Te-dopant concentration. Meanwhile, the trap distribution profile also presented the same distribution behavior as the Te concentration profile. Therefore, the deep level in Te-doped AlInP is verified to be a dopant-related defect.
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