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Concentration and size dependence of the dynamics of the Mn 3d 5 luminescence in wire‐like arrangements of (Zn,Mn)S nanoparticles
Author(s) -
Chen L.,
Kampmann J.,
Klar P. J.,
Heimbrodt W.,
Brieler F. J.,
Fröba M.
Publication year - 2006
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.200564623
Subject(s) - luminescence , photoluminescence , nanoparticle , spectroscopy , excitation , ion , materials science , energy transfer , analytical chemistry (journal) , lattice (music) , chemical physics , chemistry , nanotechnology , physics , optoelectronics , acoustics , organic chemistry , chromatography , quantum mechanics
(Zn,Mn)S nanoparticles with Mn concentrations ranging from 1% to 30% and in a wire‐like arrangement were formed inside mesoporous SiO 2 matrices of various pore diameters. The nanoparticles were characterised using photoluminescence and excitation spectroscopy. It is found, that the Mn 2+ ions are incorporated on cation lattice sites replacing Zn. The decay times of the internal Mn 2+ (3d 5 ) luminescence are studied in detail by time resolved spectroscopy over more than 5 orders of magnitude in intensity. A concentration and a remarkable size dependence of the time behaviour has been observed indicating a geometry dependence of the energy transfer processes within the Mn system. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)