Exciton Transitions in Size-Distributed BiI3 Microcrystallites Embedded in CdI3 Crystals

Article abstract of DOI:10.1143/JPSJ.65.3371

Size-distributed BiI₃ microcrystallites embedded in CdI₂ matrices were formed from melt-grown mixed crystals through the aggregation of BiI₃ molecules by an annealing treatment at a fairly low temperature. Electronic transitions in initially existing two-molecule clusters of BiI₃ were analyzed on the basis of intracation transitions of the metal. The microcrystallites of BiI₃ have a disk-like shape of various radii with the unit layer thickness, which were directly observed by a high resolution electron microscope. Absorption, luminescence luminescence-excitation spectra for the microcrystallites are presented. We observed Stokes-shifted luminescence from the BiI₃ microcrystallites for the first time. The magnitude of Stokes-shifts changes depending on the microcrystallite size. From the results, it is concluded that the exciton-phonon interaction becomes stronger with the decrease of the microcrystallite size.

Full text of DOI:10.1143/JPSJ.65.3371

J. Phys. Soc. Jpn.
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J. Phys. Soc. Jpn.
Downloaded from journals.jps.jp by University of Connecticut on 07/31/18

J. Phys. Soc. Jpn.
Downloaded from journals.jps.jp by University of Connecticut on 07/31/18

J. Phys. Soc. Jpn.
Downloaded from journals.jps.jp by University of Connecticut on 07/31/18

J. Phys. Soc. Jpn.
Downloaded from journals.jps.jp by University of Connecticut on 07/31/18

J. Phys. Soc. Jpn.
Downloaded from journals.jps.jp by University of Connecticut on 07/31/18

J. Phys. Soc. Jpn.
Downloaded from journals.jps.jp by University of Connecticut on 07/31/18

J. Phys. Soc. Jpn.
Downloaded from journals.jps.jp by University of Connecticut on 07/31/18