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Issue 21, 2012
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Hybrid organic/inorganic semiconductor nanostructures with highly efficient energy transfer

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Abstract

Using electro-static assembly of complementary organic (cyanine dye) and inorganic (quantum dots) building blocks we report on formation of an advanced nanohybrid system with highly efficient nonradiative energy transfer properties. In contrast to previous approaches, formation of J-aggregates in cyanine dye solution was triggered by direct injection of as-synthesized colloidal CdTe quantum dots without any additional surface treatment. The optical properties of formed hybrid aggregates have been investigated by absorption and photoluminescence spectroscopy and fluorescence lifetime imaging microscopy. A quantum dot/J-aggregate system shows the enhanced absorption in visible and ultraviolet parts of the spectrum typical of quantum dots, along with the narrow emission linewidth and fast recombination rate characteristic of the J-band emitters. These quantum dot/J-aggregate hybrid systems may have applications in light harvesting systems with the extended spectral absorption as well as optical sensors and optoelectronic devices.

Graphical abstract: Hybrid organic/inorganic semiconductor nanostructures with highly efficient energy transfer

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Publication details

The article was received on 14 Feb 2012, accepted on 21 Mar 2012 and first published on 22 Mar 2012


Article type: Paper
DOI: 10.1039/C2JM30917C
Citation: J. Mater. Chem., 2012,22, 10816-10820
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    Hybrid organic/inorganic semiconductor nanostructures with highly efficient energy transfer

    D. Savateeva, D. Melnikau, V. Lesnyak, N. Gaponik and Y. P. Rakovich, J. Mater. Chem., 2012, 22, 10816
    DOI: 10.1039/C2JM30917C

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