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Cd 1– x Mn x S Diluted Magnetic Semiconductors as Nanostructured Guest Species in Mesoporous Thin‐Film Silica Host Media
Author(s) -
Kouzema A. V.,
Fröba M.,
Chen L.,
Klar P. J.,
Heimbrodt W.
Publication year - 2005
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200400115
Subject(s) - materials science , mesoporous material , mesoporous silica , photoluminescence , raman spectroscopy , thin film , transmission electron microscopy , semiconductor , magnetic semiconductor , nanoparticle , chemical engineering , nanotechnology , aqueous solution , mesoporous organosilica , analytical chemistry (journal) , optoelectronics , chemistry , optics , organic chemistry , physics , engineering , catalysis
Abstract Recently, we demonstrated the possibility of synthesizing ordered nanowires of diluted magnetic II/VI semiconductors inside the channels of mesoporous silica host structures. Here, we expand this procedure from mesoporous powders to mesoporous thin films. Diluted magnetic semiconductors Cd 1– x Mn x S were synthesized within the pores of mesoporous thin‐film silica host structures by a wet‐impregnation technique using an aqueous solution of the respective metal acetates, followed by drying steps and a conversion to sulfide by thermal H 2 S treatment. The presence of Cd 1– x Mn x S nanoparticles inside the pores was proved by powder X‐ray diffraction, infrared and Raman spectroscopy, and transmission electron microscopy. Photoluminescence excitation measurements clearly demonstrate the quantum size effect of the incorporated nanostructured guest species. The quality of the nanoparticles incorporated into the mesoporous films is comparable to that of those inside the mesoporous powders.