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
Full-color fluorescent carbon quantum dots
Liang Wang,Liang Wang,Weitao Li,Luqiao Yin,Yijian Liu,Huazhang Guo,Jiawei Lai,Yu Han,Gao Li,Ming Li,Jianhua Zhang,Robert Vajtai,Pulickel M. Ajayan,Minghong Wu +13 more
TL;DR: The universal electron-donating/withdrawing group engineering approach for synthesizing tunable emissive CQDs will facilitate the progress of carbon-based luminescent materials for manufacturing forward-looking films and devices.
Journal ArticleDOI
Bright high-colour-purity deep-blue carbon dot light-emitting diodes via efficient edge amination
Fanglong Yuan,Ya-Kun Wang,Geetu Sharma,Yitong Dong,Xiaopeng Zheng,Peicheng Li,Andrew Johnston,Golam Bappi,James Z. Fan,Hao Kung,Bin Chen,Makhsud I. Saidaminov,Makhsud I. Saidaminov,Kamalpreet Singh,Oleksandr Voznyy,Osman M. Bakr,Zheng-Hong Lu,Edward H. Sargent +17 more
TL;DR: In this article, deep-blue high-colour-purity light-emitting materials are developed by using amine-based edge passivation, and they exhibit a maximum luminance of 5,240 cd m−2 and an external quantum efficiency of 4%.
Journal ArticleDOI
The fluorescence mechanism of carbon dots, and methods for tuning their emission color: a review
TL;DR: In this review, the studies performed in the past 5 years on the relationship between the fluorescence mechanism and modes for modulating the emission color of CDs are summarized and the applications of such CDs in sensors and assays are outlined.
Journal ArticleDOI
Insights into photoluminescence mechanisms of carbon dots: advances and perspectives
TL;DR: In this paper, a review of photoluminescence (PL) mechanisms of CDs is presented, highlighting the structural diversity of CDs and the potential applications of CDs in bioimaging, light-emitting diodes, and sensing.
Journal ArticleDOI
Near-infrared emissive carbon dots with 33.96% emission in aqueous solution for cellular sensing and light-emitting diodes
TL;DR: In this paper, near-infrared emissive carbon dots (CDs) were synthesized by hydrothermal method and the as-prepared CDs exhibited a relatively high quantum yield (QY) of 33.96% in an aqueous solution, and the peak toward the near infrared fluorescence reached 685 nm.
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.