Highly Luminescent Flexible Quantum Dot-Clay Films

Highly luminescent flexible CdSe/ZnS‐clay films with a well‐organized structure can be prepared by simple casting of aqueous dispersions of nanocrystals and clay. Through electrostatic interactions, negatively charged CdSe/ZnS nanocrystals are incorporated into the spaces between the positively char...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2008-08, Vol.20 (16), p.3039-3043
Main Authors: Tetsuka, Hiroyuki, Ebina, Takeo, Mizukami, Fujio
Format: Article
Language:English
Subjects:
clays
luminescence
nanocomposites
quantum dots
thin films
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Summary:Highly luminescent flexible CdSe/ZnS‐clay films with a well‐organized structure can be prepared by simple casting of aqueous dispersions of nanocrystals and clay. Through electrostatic interactions, negatively charged CdSe/ZnS nanocrystals are incorporated into the spaces between the positively charged edges of clay platelets. A substantial enhancement in photoluminescence efficiency is observed by introducing thermal annealing.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200702544