Date of Award
1997
Document Type
Thesis
Publication Status
Version of Record
Submission Date
October 2026
Thesis/Dissertation Advisor [Chair]
Medina, Fernando D.
Abstract
Zn1-x is a ternary alloy belonging to a class of materials known as Diluted Magnetic Semiconductors (DMS's). Single-crystal samples of this material possesses a cubic (zinc-blende) structure for x<0.30 and a hexagonal (wurtzite) structure for 0.30 300 K. Three emission bands are detected and are named the YEL (centered ~2.12 eV), ORA (centered 1.91 --> 1.98 eV) and IR bands. The shift of the YEL band is observed and related to the d-d interaction of the Mn^+2 ions and to thermal lattice expansion. The electron-phonon interaction is used to explain the broadening of the YEL band. A model is proposed to explain the existence of the ORA band and the shift of its energy with temperature and Mn concentration. This model for the first time provides a detailed explanation of the anomalous behavior of the energy gap of this material for low Mn concentrations.
Extent
129 p.
Recommended Citation
Xue, Jun, "Photoluminescence analysis of zinc(1-x) manganese(x) selenium" (1997). Electronic Theses and Dissertations 1990 - 1999. 1206.
https://digitalcommons.fau.edu/etd_general_4/1206
Identifier
FADT15388
Comments
Thesis (M.S.)--Florida Atlantic University, 1997.|Thesis (M.S.)--Florida Atlantic University, 1997.