Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 122, Issue 25, Pages 13391-13398Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.7b11027
Keywords
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Funding
- NSFC/RGC [N_CityU108/17]
- Research Grants Council of Hong Kong [G-CityU110/14, DAAD 57136466]
- German Academic Exchange Service [G-CityU110/14, DAAD 57136466]
- Alexander von Humboldt Foundation
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Colloidal quantum dots (QDs) are gaining prominence in the lighting and display industry, due to their tunable and saturated emission colors. Their primary application is currently in optical enhancement films for large sized liquid crystal displays, improving the performance in terms of color reproduction and optical efficiency. While most current QD materials in this regard are synthesized and processed in organic media, this work introduces aqueous-based CdTe QDs as a viable alternative for display applications. After discussing relevant aspects of the aqueous synthesis, we demonstrate the fabrication of all-water processed free-standing CdTe QD/polyurethane films, with high flexibility and transparency. Additional introduction of polyhedral oligomeric silsesquioxane results in a better dispersion of the QDs in the polymer matrix and improves the optical properties and especially photo/thermal stabilities of the composites, which is crucial regarding their application in display backlights.
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