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

Chun Sun; Yu Zhang; Kai Sun; Claas Reckmeier; Tieqiang Zhang; XiaoYu Zhang; Jun Zhao; Changfeng Wu; William W. Yu; Andrey L. Rogach

doi:10.1039/c5nr03014e

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

Chun Sun, Yu Zhang^*, Kai Sun, Claas Reckmeier, Tieqiang Zhang, XiaoYu Zhang, Jun Zhao, Changfeng Wu^*, William W. Yu, Andrey L. Rogach

^*Corresponding author for this work

Centre for Functional Photonics

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

177 Citations (Scopus)

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.

Original language	English
Pages (from-to)	12045-12050
Journal	Nanoscale
Volume	7
Issue number	28
Online published	15 Jun 2015
DOIs	https://doi.org/10.1039/c5nr03014e
Publication status	Published - 28 Jul 2015

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title = "Combination of carbon dot and polymer dot phosphors for white light-emitting diodes",

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.",

author = "Chun Sun and Yu Zhang and Kai Sun and Claas Reckmeier and Tieqiang Zhang and XiaoYu Zhang and Jun Zhao and Changfeng Wu and Yu, {William W.} and Rogach, {Andrey L.}",

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TY - JOUR

T1 - Combination of carbon dot and polymer dot phosphors for white light-emitting diodes

AU - Sun, Chun

AU - Zhang, Yu

AU - Sun, Kai

AU - Reckmeier, Claas

AU - Zhang, Tieqiang

AU - Zhang, XiaoYu

AU - Zhao, Jun

AU - Wu, Changfeng

AU - Yu, William W.

AU - Rogach, Andrey L.

PY - 2015/7/28

Y1 - 2015/7/28

N2 - 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.

AB - 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.

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84936929615&origin=recordpage

U2 - 10.1039/c5nr03014e

DO - 10.1039/c5nr03014e

M3 - RGC 21 - Publication in refereed journal

SN - 2040-3364

VL - 7

SP - 12045

EP - 12050

JO - Nanoscale

JF - Nanoscale

IS - 28

ER -

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

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