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Issue 43, 2017
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Synthesis of highly stable quantum-dot silicone nanocomposites via in situ zinc-terminated polysiloxane passivation

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Abstract

Quantum dot (QD) silicone nanocomposites are promising luminescent materials for developing high performance light-emitting diodes (LEDs). However, their practical application still faces a critical issue of strong fluorescence quenching in commercial silicone, which is normally induced by the agglomeration of QDs and the impurities such as a Pt-catalyst and oxygen in the silicone matrices. This article reports the development of zinc-terminated polydimethylsiloxane (Zn-PDMS) to passivate CdSe/CdS/ZnS QDs via an in situ approach. The Zn-PDMS passivation protects the QDs from reacting with impurities and provides the mono-dispersion of QDs in silicone resin, leading to over 80% quantum efficiency as well as effective anti-quenching properties for the QD–silicone nanocomposite under an ambient atmosphere. A high performance warm-white LED prototype with direct on-chip packaging using the as-prepared QDs is developed.

Graphical abstract: Synthesis of highly stable quantum-dot silicone nanocomposites via in situ zinc-terminated polysiloxane passivation

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Supplementary files

Article information


Submitted
22 Jul 2017
Accepted
03 Oct 2017
First published
04 Oct 2017

Nanoscale, 2017,9, 16836-16842
Article type
Paper

Synthesis of highly stable quantum-dot silicone nanocomposites via in situ zinc-terminated polysiloxane passivation

Y. Xie, C. Geng, X. Liu, S. Xu, W. Xing, X. Zhang, Z. Zhang, Y. Zhang and W. Bi, Nanoscale, 2017, 9, 16836
DOI: 10.1039/C7NR05370C

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