Flexible but Mechanically Robust Hazy Quantum Dot/Glass Fiber Reinforced Film for Efficiently Luminescent Surface Light Source

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Color conversion films with haze have aroused interest for use in surface light sources for display and lighting applications. Surface patterning or addition of light scattering particles to the color-conversion film induces haze and consequently, improves the photoluminescence (PL) extraction. Herein, a CdSe/CdZnS quantum dots (QDs)-embedded glass fiber reinforced siloxane hybrid (QD-GFRH) film with high haze value is demonstrated, originating from refractive index mismatch between glass fiber and methacrylate-phenyl functionalized siloxane matrix. The hazy QD-GFRH film shows a twofold improvement in PL extraction, as well as robust mechanical properties, such as low thermal expansion (13 × 10−6 K−1) and high deformation resistance (E = 11.8 GPa), compared to conventional polymers. Because QDs are chemically dispersed inside the film by covalent crosslinking with siloxane matrix, the QD-GFRH film exhibits long-term (30 days) thermal and chemical stability against heat and moisture conditions [85 °C/5% relative humidity (RH), and 85 °C/85% RH]. Furthermore, the yellow photoemissive QD-GFRH film, with a smooth surface and large scale (A4 size, 210 mm × 297 mm size), is applied as a color-conversion film on a blue light-emitting diode and it covers a large color gamut (107% relative to National Television System Committee).
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2020-05
Language
English
Article Type
Article
Citation

ADVANCED OPTICAL MATERIALS, v.8, no.10, pp.1902178

ISSN
2195-1071
DOI
10.1002/adom.201902178
URI
http://hdl.handle.net/10203/274346
Appears in Collection
MS-Journal Papers(저널논문)
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