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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Solid-state fluorescent carbon dots: quenching resistance strategies, high quantum efficiency control, multicolor tuning, and applications
TL;DR: In this paper, the authors summarized the recent advances in the solid-state fluorescence properties of CDs, with special emphasis on the strategies for quenching resistance, methods for high quantum efficiency, and methods for multicolor tuning.
Journal ArticleDOI
Toward Bright Red-Emissive Carbon Dots through Controlling Interaction among Surface Emission Centers
Evgeny V. Kundelev,Nikita V. Tepliakov,Nikita V. Tepliakov,Mikhail Yu. Leonov,Vladimir G. Maslov,Alexander V. Baranov,Anatoly V. Fedorov,Ivan D. Rukhlenko,Ivan D. Rukhlenko,Andrey L. Rogach,Andrey L. Rogach +10 more
TL;DR: It is demonstrated that the CDots' photoluminescence broadens, redshifts, and weakens by two orders of magnitude when the free monomers are substituted by the covalently bridged centers.
Journal ArticleDOI
Eco-friendly synthesis of tunable fluorescent carbon nanodots from Malus floribunda for sensors and multicolor bioimaging
Raji Atchudan,Thomas Nesakumar Jebakumar Immanuel Edison,Suguna Perumal,Nallal Muthuchamy,Yong Rok Lee +4 more
TL;DR: In this paper, a green and economical synthesis of highly fluorescent nitrogen-doped carbon nanodots (N-CNDs) is reported using Malus floribunda (M. floribrunda) fruit and aqueous ammonia as carbon and nitrogen source, respectively by a simple hydrothermal method.
Journal ArticleDOI
Colloidal N-Doped Graphene Quantum Dots with Tailored Luminescent Downshifting and Detection of UVA Radiation with Enhanced Responsivity
TL;DR: In this article, N-doped graphene quantum dots (N-GQDs) have been synthesized with tailored green photoluminescence (PL) under ultraviolet (UV) light excitation.
Journal ArticleDOI
Controllable acidophilic dual-emission fluorescent carbonized polymer dots for selective imaging of bacteria.
Xiaohuan Zhao,Qiuling Tang,Shoujun Zhu,Wenhuan Bu,Mingxi Yang,Xinchan Liu,Yang Meng,Weixian Yu,Hongchen Sun,Bai Yang +9 more
TL;DR: Benefiting from the different emission intensities and emission peaks of R/B-CPDs in different pH conditions, they were used to distinguish between Porphyromonas gingivalis, Streptococcus mutans, Escherichia coli and Staphylococcus aureus in dental plaque biofilms and could enable a new development direction of CPDs based on the design of multi-emission centers.
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.