Development of Quantum Dot (QD) Based Color Converters for Multicolor Display.

Journal article


Sajjad, T., Bansal, A.K., Antolini, F., Preis, E., Stroea, L., Toffanin, S., Muccini, M., Ortolani, L., Migliori, A., Allard, S., Scherf, U. and Samuel, I. (2021). Development of Quantum Dot (QD) Based Color Converters for Multicolor Display. Nanomaterials. 11 (5). https://doi.org/nano11051089
AuthorsSajjad, T., Bansal, A.K., Antolini, F., Preis, E., Stroea, L., Toffanin, S., Muccini, M., Ortolani, L., Migliori, A., Allard, S., Scherf, U. and Samuel, I.
AbstractMany 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.
Keywordsenergy transfer; nanocomposite; nanocrystal; narrow emission; thermal annealing
Year2021
JournalNanomaterials
Journal citation11 (5)
PublisherMDPI
ISSN2079-4991
Digital Object Identifier (DOI)https://doi.org/nano11051089
https://doi.org/10.3390/nano11051089
Funder/ClientEuropean Commission
Publication dates
Online23 Apr 2021
Publication process dates
Accepted15 Apr 2021
Deposited17 May 2021
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Open
Licensehttps://creativecommons.org/licenses/by/4.0/
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