Semester
Spring
Date of Graduation
2001
Document Type
Thesis
Degree Type
MS
College
Eberly College of Arts and Sciences
Department
Physics and Astronomy
Committee Chair
Nancy C. Giles.
Abstract
In this thesis, I present a detailed study of Cd1-xZn xTe crystals with 0 ≤ x ≤ 0.14 using photoluminescence (PL) spectroscopy in the temperature range from 5 K to 300 K with the purpose of: (1) identifying various radiative transitions that are signatures of various point defects in bulk CdZnTe, (2) determining the zinc concentration in these crystals, and (3) identifying the nature of room-temperature PL. PL spectra at 5 K was used to determine the bandgap and hence the zinc concentrations. In the current state-of-the-art CZT grown for radiation detectors, it is common to observe 5-K PL spectra dominated by donor-bound exciton emission (D 0, X). Also, a deep acceptor-bound exciton (A0, X) related to a complex associated with Cd vacancies is usually detected. Thus, it was of interest to determine whether the "new" trend in bulk CZT growth would produce a different conclusion about the origin of the 300-K PL.
Recommended Citation
Jain, Swati, "Photoluminescence study of cadmium zinc telluride" (2001). Graduate Theses, Dissertations, and Problem Reports. 1252.
https://researchrepository.wvu.edu/etd/1252