53% Efficient Red Emissive Carbon Quantum Dots for High Color Rendering and Stable Warm White‐Light‐Emitting Diodes
Zifei Wang, Fanglong Yuan, Xiaohong Li, Yunchao Li, Haizheng Zhong, Louzhen Fan, Shihe Yang
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.
Topics & Concepts
Color rendering indexPhosphorMaterials scienceOptoelectronicsDiodeQuantum dotHigh colorQuantum yieldUltravioletLight-emitting diodeWhite lightColor temperatureRendering (computer graphics)OpticsFluorescenceComputer graphics (images)Computer scienceColor imagePhysicsImage processingArtificial intelligenceImage (mathematics)Carbon and Quantum Dots ApplicationsNanocluster Synthesis and ApplicationsCaching and Content Delivery