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53% Efficient Red Emissive Carbon Quantum Dots for High Color Rendering and Stable Warm White‐Light‐Emitting Diodes
Author(s) -
Wang Zifei,
Yuan Fanglong,
Li Xiaohong,
Li Yunchao,
Zhong Haizheng,
Fan Louzhen,
Yang Shihe
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201702910
Subject(s) - color rendering index , phosphor , materials science , optoelectronics , diode , quantum dot , high color , quantum yield , ultraviolet , light emitting diode , rendering (computer graphics) , color temperature , white light , optics , fluorescence , computer graphics (images) , computer science , physics , color image , image (mathematics) , artificial intelligence , image processing
Red emissive carbon quantum dots (R‐CQDs) with quantum yield of 53% is successfully prepared. An ultraviolet (UV)‐pumped CQD phosphors‐based warm white light‐emitting diode (WLED) is realized for the first time and achieves a color rendering index of 97. This work provides a new avenue for the exploration of low cost, environment‐friendly, and high‐performance CQD phosphors‐based warm WLEDs.