Photoluminescence efficiencies and yields in disordered systems

The photoluminescence efficiency and yield of a simple system consisting of a single radiative centre surrounded by a random distribution of non-radiative centres are considered. It is shown that the ensemble averages for both these quantities are identical and given by a double integral. Upper and...

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Bibliographic Details
Published in:Solid state communications 1983, Vol.46 (4), p.291-293
Main Author: Searle, T.M.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Photoluminescence
Physics
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Summary:The photoluminescence efficiency and yield of a simple system consisting of a single radiative centre surrounded by a random distribution of non-radiative centres are considered. It is shown that the ensemble averages for both these quantities are identical and given by a double integral. Upper and lower limits on this average are derived, and it is shown that the lower limit also provides a rapidly evaluated approximation to the exact average for most realistic transfer functions, which is accurate to within about 10%, over at least five orders of magnitude fall of efficiency.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(83)90654-3