Photoluminescence and X-ray Diffraction Analyses of Cadmium Zinc Telluride Crystals

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dc.contributor.authorJamnejad, Ramin
dc.contributor.supervisorTiedje, J. Thomas
dc.date.accessioned2014-05-01T15:44:09Z
dc.date.available2014-05-01T15:44:09Z
dc.date.copyright2014en_US
dc.date.issued2014-05-01
dc.degree.departmentDepartment of Electrical and Computer Engineering
dc.degree.levelMaster of Applied Science M.A.Sc.en_US
dc.description.abstractThis thesis present photoluminescence spectroscopy and X-ray diffraction analyses of four different cadmium zinc telluride samples with different quality and features and similar zinc molar concentration of 10%. Photoluminescence spectroscopy of the samples let us obtain several physical parameters of the samples which are indicators of quality, composition, structure, and impurity levels of the samples. The band gap energy of the samples obtained from the photoluminescence spectra at low temperatures helped us to estimate zinc molar concentration of the samples. Temperature dependence of band gap energy in these samples has been analyzed and exciton-LO phonon interactions in the samples has been analyzed. From temperature dependence of full width at half maximum of the photoluminescence peak several parameters including concentration of impurity centers and inhomogeneity of the samples are determined and compared in order to check the quality of the samples. Thermal quenching of the photoluminescence peak has been analyzed and the processes which are associated with each parameter are determined and discussed. X-ray diffraction analyses of the sample for the location and width of the peaks have been analyzed and several characteristics of the samples including quality, lattice constant and zinc molar concentration of the samples are determined and compared. The parameters that are obtained from these analyses are compared with the ones from the photoluminescence spectra and showed a good agreement between the results of these two non-destructive characterization techniques.en_US
dc.description.proquestcode0605en_US
dc.description.proquestcode0544en_US
dc.description.proquestcode0794en_US
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/5350
dc.languageEnglisheng
dc.language.isoenen_US
dc.rights.tempAvailable to the World Wide Weben_US
dc.subjectPhotoluminescenceen_US
dc.subjectX-ray diffractionen_US
dc.subjectCadmium Zinc Tellurideen_US
dc.titlePhotoluminescence and X-ray Diffraction Analyses of Cadmium Zinc Telluride Crystalsen_US
dc.typeThesisen_US

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