Track membranes with embedded semiconductor nanocrystals: structural and optical examinations

We studied the optical properties of poly(ethylene terephthalate) ion track membranes of 1.5, 0.5 and 0.05 µm pores impregnated with luminescent semiconductor CdSe/ZnS nanocrystals of different diameters (2.5 and 5 nm). The nanocrystals were embedded from their colloidal solutions in toluene by the...

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Bibliographic Details
Published in:Nanotechnology 2011-11, Vol.22 (45), p.455201-1-7
Main Authors: Orlova, A O, Gromova, Yu A, Savelyeva, A V, Maslov, V G, Artemyev, M V, Prudnikau, A, Fedorov, A V, Baranov, A V
Format: Article
Language:English
Subjects:
Cadmium selenides
Colloids
Intermetallics
Membranes
Nanocrystals
Porosity
Semiconductors
Zinc sulfides
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Summary:We studied the optical properties of poly(ethylene terephthalate) ion track membranes of 1.5, 0.5 and 0.05 µm pores impregnated with luminescent semiconductor CdSe/ZnS nanocrystals of different diameters (2.5 and 5 nm). The nanocrystals were embedded from their colloidal solutions in toluene by the immersion of a membrane in a colloidal solution. Localization of quasi-isolated weakly interacting CdSe/ZnS nanocrystals in a loosened layer on the track pore wall surface along with the existence of empty pores was demonstrated. We observed also the spatial separation of nanocrystals of 2.5 and 5 nm in size along the 50 nm pores.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/22/45/455201