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
Carbonized Polymer Dots: A Brand New Perspective to Recognize Luminescent Carbon-Based Nanomaterials.
TL;DR: The common characters and complicated relationship of CDs are explored, based on the reasonable classification of graphene quantum dots, carbon quantum dots and carbonized polymer dots, and the important role of polymerization and carbonization during the formation of CDs is emphasized.
Journal ArticleDOI
Far-Red to Near-Infrared Carbon Dots: Preparation and Applications in Biotechnology.
TL;DR: This Review summarizes the recent progress of far-red to near-infrared (NIR) CDs from the preparation and their biological applications and the challenges in designing far- red and NIR CDs and their further applications in biomedical fields are discussed.
Journal ArticleDOI
Time-Dependent Phosphorescence Colors from Carbon Dots for Advanced Dynamic Information Encryption.
Jing Tan,Qijun Li,Qijun Li,Shuai Meng,Yuchen Li,Jian Yang,Yunxia Ye,Zikang Tang,Songnan Qu,Ren Xudong +9 more
TL;DR: In this paper, a multilevel, dynamic phosphorescence colored 3D code is designed for advanced dynamic information encryption based on the unusual phosphorescent properties of the carbon dots (CDs) synthesized by the one-pot hydrothermal treatment of levofloxacin.
Journal ArticleDOI
Carbon quantum dot-based composites for energy storage and electrocatalysis: Mechanism, applications and future prospects
TL;DR: In this paper, a review of recent advances in the fabrication of CQD/GQD based composites for electrochemical systems, their mechanism of action, applications in energy storage (electrochemical capacitors, lithium/sodium ion batteries) and electrocatalysis (oxygen reduction reaction, oxygen/hydrogen evolution reactions, CO2 electroreduction, biofuel cells and electrochemical biosensors) with an analysis of their potential prospects.
Journal ArticleDOI
Electroluminescent Warm White Light-Emitting Diodes Based on Passivation Enabled Bright Red Bandgap Emission Carbon Quantum Dots
Haoran Jia,Zhibin Wang,Ting Yuan,Fanglong Yuan,Xiaohong Li,Yunchao Li,Zhan'ao Tan,Louzhen Fan,Shihe Yang +8 more
TL;DR: Solution‐processed electroluminescent warm‐WLEDs based on the R‐EGP‐CQDs‐NMe2, ‐NEt2, and ‐NPr2 display voltage‐stable warm white spectra with a maximum luminance of 5248–5909 cd m−2 and a current efficiency of 3.65–3.85 cd A−1.2 and show good long‐term operational stability.
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.