Quantum dot/J-aggregate blended films for light harvesting and energy transfer.
basic_science · Level V
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- Record sourced from PubMed, PMID 20863072.
- Also identified by DOI 10.1021/nl1018639.
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Abstract
This paper describes the solution preparation of thin films composed of quantum dots and thiacyanine J-aggregates, making use of the size tunable emission of quantum dots and the narrow, intense absorption of J-aggregates in the solid state. These blended films exhibit 90% energy transfer efficiency from J-aggregates to quantum dots and can uniformly cover a large area. Because the presence of the J-aggregates enhances the QD photoluminescence intensity by 2.5-fold over QDs alone, these solid state materials may be useful in downconversion applications or in fundamental investigations of light harvesting.