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Radiation Induced Luminescence from Dipoles Immersed in a Solid with a Rough Surface
Author(s) -
Nkoma J. S.
Publication year - 1989
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/pssb.2221530140
Subject(s) - dipole , luminescence , surface roughness , amplitude , radiation , surface (topology) , surface finish , physics , bounded function , optics , zero order , rough surface , condensed matter physics , materials science , first order , geometry , quantum mechanics , mathematics , mathematical analysis , composite material
Luminescence is modelled as radiation from an oscillating dipole immersed in a solid with a rough surface. Maxwell's equations are solved and the zero order and first order electric fields in the roughness amplitude are obtained. It is found that the first order contribution becomes comparable to the zero order contribution only when the roughness amplitude is large, of the order of 1000 nm. The effects of dipoles oriented parallel and normal to the z ‐axis are compared. The results are applied to a system of GaP with a rough surface and bounded by vacuum.