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Development of Quantum Dots (QD) based color converters for multicolor display

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Sajjad_2021_Nanomaterials_QD_CC.pdf (1.793Mb)
Date
23/04/2021
Author
Sajjad, Muhammad Tariq
Bansal, Ashu Kumar
Antolini, F
Preis, E
Stroea, L
Toffanin, S
Muccini, Michele
Ortolani, L
Migliori, A
Allard, S
Scherf, U
Samuel, Ifor David William
Funder
European Commission
European Commission
Grant ID
247928
247928
Keywords
Nanocomposite
Energy transfer
Narrow emission
Thermal annealing
Nanocrystal
QC Physics
TK Electrical engineering. Electronics Nuclear engineering
DAS
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Abstract
Many displays involve the use of color conversion layers. QDs are attractive candidates as color converters because of their easy processability, tuneable optical properties, high photoluminescence quantum yield, and good stability. Here, we show that emissive QDs with narrow emission range can be made in-situ in a polymer matrix, with properties useful for color conversion. This was achieved by blending the blue-emitting pyridine based polymer with a cadmium selenide precursor and baking their films at different temperatures. To achieve efficient color conversion, blend ratio and baking temperature/time were varied. We found that thermal decomposition of the precursor leads to highly emissive QDs whose final size and emission can be controlled using baking temperature/time. The formation of the QDs inside the polymer matrix was confirmed through morphological studies using atomic force microscopy (AFM) and transmission electron microscopy (TEM). Hence, our approach provides a cost-effective route to making highly emissive color converters for multi-color displays.
Citation
Sajjad , M T , Bansal , A K , Antolini , F , Preis , E , Stroea , L , Toffanin , S , Muccini , M , Ortolani , L , Migliori , A , Allard , S , Scherf , U & Samuel , I D W 2021 , ' Development of Quantum Dots (QD) based color converters for multicolor display ' , Nanomaterials , vol. 11 , no. 5 , 1089 . https://doi.org/10.3390/nano11051089
Publication
Nanomaterials
Status
Peer reviewed
DOI
https://doi.org/10.3390/nano11051089
ISSN
2079-4991
Type
Journal article
Rights
Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/4.0/).
Description
Funding: This research was funded by European commission under FP7 LAMP project “Laser Induced Synthesis of Polymeric Nanocomposite Materials and Development of Micro-patterned Hybrid Light Emitting Diodes (LED) and Transistors (LET)” (Grant No. 247928)
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  • University of St Andrews Research
URL
https://www.mdpi.com/journal/nanomaterials/special_issues/Nanocrystals_Synthesis
URI
http://hdl.handle.net/10023/23085

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