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Visible transparent white light emitting ink from a Ce3+ sensitized monodispersed Tb,Sm co-doped LaF3@C-dot nanocomposite

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Abstract

Bright white light emission (CIE values 0.32 and 0.33) has been achieved by a single excitation source (254 nm) from a monodispersed nanocomposite composed of Ce3+, Tb3+ and Sm3+ doped LaF3 nanocrystals (NCs) and N-doped C-dots where Ce3+ acts as an excellent sensitizer. Controlled deposition of the C-dots onto the surface of the LaF3 NCs impedes conventional aggregation induced quenching (AIQ) of the C-dots in solid state. The transparent colloidal ink was coated onto an UV chip to fabricate a white light emitting diode (WLED) with a luminous efficacy of 8.72 lm W−1.

Graphical abstract: Visible transparent white light emitting ink from a Ce3+ sensitized monodispersed Tb,Sm co-doped LaF3@C-dot nanocomposite

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Publication details

The article was received on 12 Sep 2018, accepted on 19 Nov 2018 and first published on 19 Nov 2018


Article type: Communication
DOI: 10.1039/C8CC07423B
Citation: Chem. Commun., 2018, Advance Article
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    Visible transparent white light emitting ink from a Ce3+ sensitized monodispersed Tb,Sm co-doped LaF3@C-dot nanocomposite

    S. Ghosh, C. Pal, S. Paul, M. Saha, D. Barman and S. K. De, Chem. Commun., 2018, Advance Article , DOI: 10.1039/C8CC07423B

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