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Issue 20, 2014
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Photophysical and structural characterisation of in situ formed quantum dots

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Abstract

Conjugated polymer–semiconductor quantum dot (QD) composites are attracting increasing attention due to the complementary properties of the two classes of materials. We report a convenient method for in situ formation of QDs, and explore the conditions required for light emission of nanocomposite blends. In particular we explore the properties of nanocomposites of the blue emitting polymer poly[9,9-bis(3,5-di-tert-butylphenyl)-9H-fluorene] together with cadmium sulphide (CdS) and cadmium selenide (CdSe) precursors. We show the formation of emissive quantum dots of CdSe from thermally decomposed precursor. The dots are formed inside the polymer matrix and have a photoluminescence quantum yield of 7.5%. Our results show the importance of appropriate energy level alignment, and are relevant to the application of organic–inorganic systems in optoelectronic devices.

Graphical abstract: Photophysical and structural characterisation of in situ formed quantum dots

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Article information


Submitted
18 Feb 2014
Accepted
01 Apr 2014
First published
11 Apr 2014

This article is Open Access

Phys. Chem. Chem. Phys., 2014,16, 9556-9564
Article type
Paper
Author version available

Photophysical and structural characterisation of in situ formed quantum dots

A. K. Bansal, F. Antolini, M. T. Sajjad, L. Stroea, R. Mazzaro, S. G. Ramkumar, K.-J. Kass, S. Allard, U. Scherf and I. D. W. Samuel, Phys. Chem. Chem. Phys., 2014, 16, 9556
DOI: 10.1039/C4CP00727A

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    [Original citation] - Published by The Royal Society of Chemistry.

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