Journal ArticleDOI
53% Efficient Red Emissive Carbon Quantum Dots for High Color Rendering and Stable Warm White-Light-Emitting Diodes
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TLDR
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.Abstract:
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.read more
Citations
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Journal ArticleDOI
Bright tricolor ultrabroad-band emission carbon dots for white light-emitting diodes with a 96.5 high color rendering index
TL;DR: In this paper, tricolor ultrabroad-band (109-120 nm) emissive CDs (Tri-CDs) with a quantum yield up to 21-64% by a one-pot solvothermal route.
Journal ArticleDOI
Great enhancement of red emitting carbon dots with B/Al/Ga doping for dual mode anti-counterfeiting
Kang Yuan,Xinghua Zhang,Xiang Li,Ruohan Qin,Yahui Cheng,Lanlan Li,Xiaojing Yang,Xiaofei Yu,Zunming Lu,Hui Liu +9 more
TL;DR: In this paper, group IIIA (B, Al, Ga) elements are introduced to improve the quantum yield of RCDs and the QY has been significantly increased from 0.29% to 12.02% (forty one times), 1.99% (seven times) and 1.53% (five times) for B-CDs, Al-CD, and Ga-CD.
Journal ArticleDOI
Facile synthesis of porous nitrogen doped carbon dots (NCDs)@g-C3N4 for highly efficient photocatalytic and anti-counterfeiting applications
Xue-Chun Yang,Yun-Ling Yang,Shao-Lin Zhang,Yu-Feng Liu,Si-Jie Fu,Meng Zhu,Jian-Feng Hu,Zhi-Jun Zhang,Jing-Tai Zhao +8 more
TL;DR: In this article, a novel porous nitrogen doped carbon dots (NCDs)@g-C3N4 composite was successfully synthesized by a facile hydrothermal approach.
Journal ArticleDOI
The synthesis of green fluorescent carbon dots for warm white LEDs
TL;DR: In this paper, green fluorescent carbon dots (CDs) were synthesized with pyrogallic acid as carbon source by solvothermal method in N,N-dimethylformamide (DMF) to promote the formation of large conjugated sp2-domain in CDs.
Journal ArticleDOI
Red Phosphorescent Carbon Quantum Dot Organic Framework-Based Electroluminescent Light-Emitting Diodes Exceeding 5% External Quantum Efficiency.
Yuxin Shi,Zhibin Wang,Ting Meng,Ting Yuan,Ruihao Ni,Yunchao Li,Xiaohong Li,Yang Zhang,Zhan'ao Tan,Shengbin Lei,Louzhen Fan +10 more
TL;DR: In this article, the synthesis of red (625 nm) phosphorescent carbon quantum dot organic frameworks (CDOFs) with a quantum yield of up to 42.3% and realization of high efficiency red phosphorescent electroluminescent LEDs are reported.
References
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Journal ArticleDOI
Quantum-sized carbon dots for bright and colorful photoluminescence.
Ya-Ping Sun,Bing Zhou,Yi Lin,Wei Wang,K. A. Shiral Fernando,Pankaj Pathak,Mohammed J. Meziani,Barbara A. Harruff,Xin Wang,Haifang Wang,Pengju G. Luo,Hua Yang,Muhammet E. Köse,Bailin Chen,L. Monica Veca,Su-Yuan Xie +15 more
TL;DR: It is reported that nanoscale carbon particles (carbon dots) upon simple surface passivation are strongly photoluminescent in both solution and the solid state.
Journal ArticleDOI
Highly Photoluminescent Carbon Dots for Multicolor Patterning, Sensors, and Bioimaging
Shoujun Zhu,Qingnan Meng,Lei Wang,Junhu Zhang,Yubin Song,Han Jin,Kai Zhang,Hongchen Sun,Hai-Yu Wang,Bai Yang +9 more
TL;DR: A facile and highoutput strategy for the fabrication of CDs, which is suitable for industrial-scale production and is almost equal to fluorescent dyes, is discussed.
Journal ArticleDOI
Full-Color Light-Emitting Carbon Dots with a Surface-State-Controlled Luminescence Mechanism.
TL;DR: Carbon dots with tunable photoluminescence (PL) and a quantum yield of up to 35% in water were hydrothermally synthesized in one pot and separated via silica column chromatography, and these separated CDs emitted bright and stable luminescence in gradient colors under a single-wavelength UV light.
Journal ArticleDOI
Red, Green, and Blue Luminescence by Carbon Dots: Full‐Color Emission Tuning and Multicolor Cellular Imaging
TL;DR: The facile preparation and unique optical features make these CDs potentially useful in numerous applications such as light-emitting diodes, full-color displays, and multiplexed (UC)PL bioimaging.
Journal ArticleDOI
Carbon and Graphene Quantum Dots for Optoelectronic and Energy Devices: A Review
TL;DR: In this article, recent exciting progresses on CD and GQD-based optoelectronic and energy devices, such as light emitting diodes (LEDs), solar cells (SCs), photodetctors (PDs), photocatalysis, batteries, and supercapacitors are highlighted.