Efficient spectrally dynamic blue‐to‐green emission of bipyridine‐based bridged silsesquioxanes for solid‐state lighting | Zendy

Nobre Sónia S. | Zendy; Cattoën Xavier | Zendy; Ferreira Rute A. S. | Zendy; Man Michel Wong Chi | Zendy; Carlos Luis D. | Zendy

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Efficient spectrally dynamic blue‐to‐green emission of bipyridine‐based bridged silsesquioxanes for solid‐state lighting

Author(s) -

Nobre Sónia S.,

Cattoën Xavier,

Ferreira Rute A. S.,

Man Michel Wong Chi,

Carlos Luis D.

Publication year - 2010

Publication title -

physica status solidi (rrl) – rapid research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.786

H-Index - 68

eISSN - 1862-6270

pISSN - 1862-6254

DOI - 10.1002/pssr.200903396

Subject(s) - phosphor , quantum yield , light emitting diode , excited state , silsesquioxane , materials science , optoelectronics , diode , metal , luminance , luminescence , photochemistry , chemistry , fluorescence , optics , polymer , physics , metallurgy , composite material , nuclear physics

We report a metal‐free bpy‐bridged silsesquioxane displaying an efficient and tuneable blue‐to‐green emission (maximum quantum yield and luminance values of 0.22 ± 0.02 cd m –2 and 63 ± 3 cd m –2 , respectively) when excited by commercial InGaN light emitting diodes (LEDs) (385–405 nm). This is the highest quantum yield value reported so far for metal‐free phosphors easily excited by commercial InGaN long‐UV/blue LEDs bringing organic/inorganic hybrids on the way to applications as metal‐free phosphors for smart LED‐based lighting and LED‐addressed displays. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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