Synchrotron-laser pump-probe luminescence spectroscopy: Correlation of electronic defect states with x-ray absorption in wide-gap solids

B. Hamilton, Nigel Poolton, D. A. Evans

Research output: Contribution to journalArticlepeer-review

Abstract

The potential for synchrotron–laser pump–probe luminescence measurements to provide a direct link between the chemical/structural properties of light emitting wide band-gap solids and optically active electronic trapping states is evaluated. Initial results are presented that demonstrate the various excitation and relaxation processes involved, whereby the synchrotron pump provides the chemical/structural information, and the laser probes both radiative and non-radiative electronic trapping states. The examples described here demonstrate that the laser probe may quench, be neutral, or enhance the synchrotron-pumped luminescence of the wide band-gap materials boron nitride, SiO2 and Na0.7Ca0.3Al1.3Si2.7O8, respectively. Consideration is given to the potential of the method to provide a general route to the analysis of single components in heterogeneous systems.
Original languageEnglish
Pages (from-to)1478-1484
Number of pages7
JournalJournal of Physics D: Applied Physics
Volume38
Issue number9
DOIs
Publication statusPublished - Apr 2005

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