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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Surface metal-ion-functionalized carbon dots and their application in pH sensing
TL;DR: In this paper, surface metal-ion-functionalized CDs by treating solvothermally synthesized CDs with alkali metal aqueous solutions (LiOH, NaOH or KOH) were applied to pH sensing.
Journal ArticleDOI
Gram-Scale Room-Temperature Synthesis of Solid-State Fluorescent Carbon Nanodots for Bright Electroluminescent Light Emitting Diodes.
Mengyun Zheng,Hao-Yuan Jia,Biao Zhao,Cheng Shan Zhang,Qi Dang,Huanyu Ma,Kunxiang Xu,Zhan'ao Tan +7 more
TL;DR: In this paper , a rapid one-step room temperature synthetic strategy is introduced to prepare highly emissive solid-state-fluorescent CDs (RT-CDs), where a strong oxidizing agent, potassium periodate (KIO4 ), is adopted as a catalyst to facilitate the cyclization of o-phenylenediamine and 4-dimethylamino phenol in aqueous solution at room temperature for only 5min.
Journal ArticleDOI
Fluorescent carbon dot as an optical amplifier in modern agriculture
TL;DR: In this paper , the authors summarize the applications of CDs in modern agriculture as an optical amplifier based on the CDs' exposure methods to plants with soil cultivation, hydroponic cultivation, foliar feeding, and light-harvesting film.
Journal ArticleDOI
Highly stable yellow-emitting fluorescent film based on graphene quantum dots for white laser-emitting devices
TL;DR: In this paper, a green-emitting graphene quantum dots (GQDs) with a high crystallization degree were prepared by a two-step solvothermal method, and the quantum yield was up to 47.09% which is higher than that of other GQDs synthesized by top-down methods.
Journal ArticleDOI
High Stability Carbon Dots Phosphor and Ultra-High Color Rendering Index White Light-Emitting Diodes
TL;DR: In this article , a new kind of carbon dots based phosphor was developed for light emitting diodes (LED) by adsorbing carbon dots to starch particles, the bonding mechanism is based on hydrogen bonding of surface functional groups of carbon dot and starch particles.
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.