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; I. D. W. Samuel

doi:10.1039/c4cp00727a

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, I. D. W. Samuel^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	9556-9564
Number of pages	9
Journal	Physical Chemistry Chemical Physics
Volume	16
Issue number	20
DOIs	https://doi.org/10.1039/c4cp00727a
Publication status	Published - 11 Apr 2014

Keywords

Organic-inorganic nanocomposites
Energy-transfer
Solar-cells
Emitting polymers
Charge separation
Nanocrystals
Nanoparticles
CDSE
Precursors
Devices

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10.1039/c4cp00727a

Bansal_2014_PCCP_Photophysical
© Royal Society of Chemistry 2014. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (http://creativecommons.org/licenses/by/3.0/).
Final published version, 2.86 MB

Challening the Limits of Photonics: stru: Challenging the Limits of Photonics: Structured Light
Dholakia, K. (PI), Krauss, T. F. (CoI) & Samuel, I. D. W. (CoI)
EPSRC
1/06/12 → 31/05/17
Project: Standard
EU FP7 'LAMP' Grant Agreement-247928: EU FP7 'LAMP' (FP7-ICT-2009-4)
Samuel, I. D. W. (PI)
European Commission
1/06/10 → 31/05/13
Project: Standard

Cite this

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title = "Photophysical and structural characterisation of in situ formed quantum dots",

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.",

keywords = "Organic-inorganic nanocomposites, Energy-transfer, Solar-cells, Emitting polymers, Charge separation, Nanocrystals, Nanoparticles, CDSE, Precursors, Devices",

author = "Bansal, {A. K.} and F. Antolini and Sajjad, {M. T.} and L. Stroea and R. Mazzaro and Ramkumar, {S. G.} and Kass, {K. -J.} and S. Allard and U. Scherf and Samuel, {I. D. W.}",

note = "The authors acknowledge financial support from FP7 project “Laser Induced Synthesis of Polymeric Nanocomposite Materials and Development of Micro-patterned Hybrid Light Emitting Diodes (LED) and Transistors (LET)” – LAMP project (G.A. 247928). AKB and IDWS also acknowledge financial support from EPSRC Programme grant “Challenging the limits of photonics: Structured light” EP/J01771X/1.",

year = "2014",

month = apr,

day = "11",

doi = "10.1039/c4cp00727a",

language = "English",

volume = "16",

pages = "9556--9564",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "ROYAL SOC CHEMISTRY",

number = "20",

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T1 - Photophysical and structural characterisation of in situ formed quantum dots

AU - Bansal, A. K.

AU - Antolini, F.

AU - Sajjad, M. T.

AU - Stroea, L.

AU - Mazzaro, R.

AU - Ramkumar, S. G.

AU - Kass, K. -J.

AU - Allard, S.

AU - Scherf, U.

AU - Samuel, I. D. W.

N1 - The authors acknowledge financial support from FP7 project “Laser Induced Synthesis of Polymeric Nanocomposite Materials and Development of Micro-patterned Hybrid Light Emitting Diodes (LED) and Transistors (LET)” – LAMP project (G.A. 247928). AKB and IDWS also acknowledge financial support from EPSRC Programme grant “Challenging the limits of photonics: Structured light” EP/J01771X/1.

PY - 2014/4/11

Y1 - 2014/4/11

N2 - 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.

AB - 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.

KW - Organic-inorganic nanocomposites

KW - Energy-transfer

KW - Solar-cells

KW - Emitting polymers

KW - Charge separation

KW - Nanocrystals

KW - Nanoparticles

KW - CDSE

KW - Precursors

KW - Devices

U2 - 10.1039/c4cp00727a

DO - 10.1039/c4cp00727a

M3 - Article

SN - 1463-9076

VL - 16

SP - 9556

EP - 9564

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 20

ER -

Photophysical and structural characterisation of in situ formed quantum dots

Abstract

Keywords

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Projects

Challening the Limits of Photonics: stru: Challenging the Limits of Photonics: Structured Light

EU FP7 'LAMP' Grant Agreement-247928: EU FP7 'LAMP' (FP7-ICT-2009-4)

Cite this