Free-standing micropatternable nanocomposites as efficient colour converting filters for light emitting devices
Abstract
Three different families of chemically engineered rod-shaped CdSe/CdS colloidal nanocrystals have been embedded into a poly(methyl methacrylate) matrix to realize a set of color-tunable photoluminescent filters for RGB light emitting devices, which demonstrate excellent optical transparency (in the range of wavelengths not corresponding to nanocrystal absorption), efficient photoluminescence and good thermal-and photo-stability. Accurate morphological and optical characterization of nanocomposite foils is provided as a function of nanorod size and content, and their color conversion properties are investigated in combination with a blue-emitting LED source. This approach combines the tunable optical features of inorganic quantum-confined light emitters with the facile processability of the polymeric host and offers a highly versatile design tool, which can be exploited in a wide spectrum of lighting and photonic devices. The preparation procedure reported here is even compatible with the implementation of an engineered array of microlens on the front-end surface of the nanocomposite foil and thus makes possible a tailored control of the color-converted photometric pattern.
Autore Pugliese
Tutti gli autori
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Pareo P.; Carbone L.; Mariano F.; Zacheo A.; Accorsi G.; Arima V.; Gigli G.; Manca M.
Titolo volume/Rivista
JOURNAL OF MATERIALS CHEMISTRY C
Anno di pubblicazione
2016
ISSN
2050-7526
ISBN
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Numero di citazioni Wos
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Settori ERC
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Codici ASJC
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