Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 528, Issue -, Pages 281-288Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2018.05.101
Keywords
Carbon dots; Red emission; Phosphors; White light-emitting diodes; High color rendering index
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Funding
- National Natural Science Foundation of China [51602304]
- Jilin Province Science and Technology Research [20160520008JH, 20150519003JH, 20140101060JC, 20170101191JC, 20170101042JC]
- State Key Laboratory of Supramolecular Structure and Materials in Jilin University [sklssm201810]
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Exploration of solid-state efficient red emissive carbon dots (CDs) phosphors is strongly desired for the development of high performance CDs-based white light-emitting diodes (WLEDs). In this work, enhanced red emissive CDs-based phosphors with photoluminescence quantum yields (PLQYs) of 25% were prepared by embedding red emissive CDs (PLQYs of 23%) into polyvinyl pyrrolidone (PVP). Because of the protection of PVP, the phosphors could preserve strong luminescence under long-term UV excitation or being mixed with conventional packaging materials. By applying the red emissive phosphors as the color conversion layer, WLEDs with high color rendering index of 92 and color coordinate of (0.33, 0.33) are fabricated. (C) 2018 Elsevier Inc. All rights reserved.
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