Spectral and Time Dependences of the Energy Transfer of Bound Optical Excitations in GaP(N)

T. Niebling, O. Rubel, W. Heimbrodt, W. Stolz, S. D. Baranovskii, P. J. Klar, J. F. Geisz

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Abstract

Low-temperature kinetics of the energy transfer of localized optical excitations in a nitrogen-doped GaP bulk sample with a nitrogen content of 2.1% are studied by means of time-resolved spectroscopy. Both the spectral and time dependences of the photoluminescence decay are described quantitatively on a timescale from nanoseconds to a microsecond by a phenomenological theory of hopping and energy relaxation of localized excitons. The microscopic parameters, which characterize the luminescent states, are determined by comparison between experiment and theory.

Original languageAmerican English
Article numberArticle No. 015217
Number of pages4
JournalJournal of Physics Condensed Matter
Volume20
Issue number1
DOIs
StatePublished - 9 Jan 2008

NREL Publication Number

  • NREL/JA-520-43112

Keywords

  • optical excitation
  • photoluminescence

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