Photophysical and structural characterisation of in situ formed quantum dots

Journal article


Bansal, AK, Antolini, F, Sajjad, T, Stroea, L, Mazzaro, R, Ramkumar, SG, Kass, K-J, Allard, S, Scherf, U and Samuel, IDW (2014). Photophysical and structural characterisation of in situ formed quantum dots. Physical Chemistry Chemical Physics. 16 (20), pp. 9556-9564.
AuthorsBansal, AK, Antolini, F, Sajjad, T, Stroea, L, Mazzaro, R, Ramkumar, SG, Kass, K-J, Allard, S, Scherf, U and Samuel, IDW
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.

Year2014
JournalPhysical Chemistry Chemical Physics
Journal citation16 (20), pp. 9556-9564
PublisherRoyal Society of Chemistry
ISSN1463-9076
Digital Object Identifier (DOI)doi:https://www.doi.org/10.1039/C4CP00727A
Publication dates
Print11 Apr 2014
Online11 Apr 2014
Publication process dates
Accepted01 Apr 2014
Deposited04 Feb 2020
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