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Issue 28, 2015
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Combination of carbon dot and polymer dot phosphors for white light-emitting diodes

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Abstract

We realized white light-emitting diodes with high color rendering index (85–96) and widely variable color temperatures (2805–7786 K) by combining three phosphors based on carbon dots and polymer dots, whose solid-state photoluminescence self-quenching was efficiently suppressed within a polyvinyl pyrrolidone matrix. All three phosphors exhibited dominant absorption in the UV spectral region, which ensured the weak reabsorption and no energy transfer crosstalk. The WLEDs showed excellent color stability against the increasing current because of the similar response of the tricolor phosphors to the UV light variation.

Graphical abstract: Combination of carbon dot and polymer dot phosphors for white light-emitting diodes

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Publication details

The article was received on 08 May 2015, accepted on 08 Jun 2015 and first published on 15 Jun 2015


Article type: Paper
DOI: 10.1039/C5NR03014E
Citation: Nanoscale, 2015,7, 12045-12050

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    Combination of carbon dot and polymer dot phosphors for white light-emitting diodes

    C. Sun, Y. Zhang, K. Sun, C. Reckmeier, T. Zhang, X. Zhang, J. Zhao, C. Wu, W. W. Yu and A. L. Rogach, Nanoscale, 2015, 7, 12045
    DOI: 10.1039/C5NR03014E

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