Near-IR photoresponse in new up-converting CdSe/NaYF4:Yb,Er nanoheterostructures.

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Abstract

We report the synthesis of new nanoheterostructures consisting of lanthanide-doped NaYF(4) nanocrystals dendritically decorated with CdSe quantum dots. Strong coupling between NaYF(4):Yb,Er and CdSe leads to up-conversion of near-IR photons and subsequent energy transfer from lanthanide nanocrystals to CdSe. This is manifested in characteristic CdSe emission and leads to pronounced photoconductivity of the films upon sub-band-gap irradiation at 980 nm.

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Journal

Journal ID (iso-abbrev): J. Am. Chem. Soc.

Title: Journal of the American Chemical Society

ISSN (Electronic): 1520-5126

ISSN (Print): 0002-7863

Publication date (Electronic): Jul 7 2010

Volume: 132

Issue: 26

Affiliations

[1 ] Department of Chemistry and Center for Self-Assembled Chemical Structures, McGill University, 801 Sherbrooke Street West, Montréal, QC, Canada H3A 2K6.

Article

DOI: 10.1021/ja103743t

PubMed ID: 20536139

SO-VID: d6a079ac-4b26-45c5-94b1-c8a8c2037590

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