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Cathodoluminescence Defectoscopy of II–VI Compounds
Author(s) -
Nazarov M.V.
Publication year - 2002
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200201)229:1<323::aid-pssb323>3.0.co;2-3
Subject(s) - cathodoluminescence , materials science , luminescence , scanning electron microscope , annealing (glass) , microelectronics , optoelectronics , analytical chemistry (journal) , mineralogy , optics , chemistry , composite material , physics , chromatography
The quality and reliability of microelectronic materials can be dramatically changed by point and linear defects, which occur in specimens naturally, or which can be deliberately introduced. The control of defect distribution requires a measurement method capable of investigating the defects on a micrometer scale. This article surveys some of the opportunities for the control of defects in solids by using a combination of different cathodoluminescence modes including colour cathodoluminescence (CCL) in the scanning electron microscope (SEM) with computer graphics. The method of cathodoluminescence defectoscopy was applied to microcharacterization of commercial wide‐band‐gap II–VI semiconductors (ZnS, ZnSe) as well as to the thin diffusion layers formed in these materials in the process of annealing. The luminescence topography of the radiative centre distribution at different Al and Bi concentrations was investigated and a model of two‐polar and dissociative diffusion of Zn, Al and Bi from the melt to the crystal volume was proposed.