Temperature-gradient annealing of CdZnTe under Te overpressure

► Te inclusions are Te-rich CZT melts and contain voids fraction. ► Thermomigration velocity of Te inclusions critically depends on its size. ► Complex defect of Te antisite and Cd vacancies is reasonable deep-level defect. ► Te overpressure annealing does not yield any of the significant structural changes.