Journal
ACS PHOTONICS
Volume 3, Issue 9, Pages 1575-1580Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.6b00485
Keywords
silicon nanocrystals; photoluminescence; polymers; poly(methyl methacrylate); nanocomposites
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Funding
- Marie Curie ITN project ICONE [608099]
- Goran Gustafssons Stiftelse
- Swedish Research Council (VR) through ADOPT Center of Excellence
- University of Alberta
- NSERC
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Solid polymer/Si nanocrystal bulk nanocomposites were fabricated from solutions of alkene- and hydride-terminated silicon nanocrystals (NCs) in toluene. The photoluminescence peak position of hydride-terminated SiNCs before polymerization was tuned by photoassisted hydrofluoric acid etching. Optical properties of obtained PMMA/NC hybrids, such as quantum yield, luminescence lifetime, and dispersion factor, were evaluated over time. Photostability of these transparent bulk polymer/SiNC hybrids over months was confirmed. The emission covers the visible to near-infrared range with a quantum yield of similar to 30-40% for yellow-red nanocomposites.
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