固态照明用稀土荧光粉和无机量子点:机遇与挑战

白光发光二极管(w-LED)固态照明器件具有使用寿命长、环保节能、体积小及安全性高等优点,经过10多年的发展已基本取代传统白炽灯、荧光灯而成为新一代照明光源。 荧光转换材料作为w-LED中的核心材料,直接影响着器件的性能指标。 因此,开发高性能荧光转换材料对进一步提升w-LED器件性能至关重要。 本文围绕稀土荧光粉和无机量子点这两类固态照明用无机发光材料进行介绍,综述了w-LED用稀土荧光粉的结构设计、组成及发光性能调控等方面的进展,代表性地介绍了以ZnS为代表的硫族化合物、铅卤钙钛矿和碳点3类典型的光致发光量子点及其w-LED的设计与光谱调控研究工作,最后提出了稀土荧光粉和无机量子点作为固态照明用荧光转换材料所存在的机遇和挑战。

Rare Earth Doped Phosphors and Inorganic Quantum Dots for Solid State Lighting:Opportunity and Challenge

White light-emitting diode(w-LED) has the advantages of long service life, environmental protection, energy saving and high safety, which has basically replaced traditional incandescent and fluorescent lamp after development of more than ten years and is considered to be the new generation lighting source. As the core material of w-LED, fluorescence conversion material directly affects the performance of the device. Therefore, the development of high-performance fluorescent conversion materials is of great importance to further enhance the performance of w-LED devices. This review mainly describes the rare-earth phosphors and inorganic quantum dots which used in solid-state lighting device. We summarize the progress of the structural design, composition and photoluminescent tuning of rare-earth phosphors and typically introduce the design and photoluminescence tuning of chalcogenide quantum dots represented by ZnS, perovskite quantum dots and carbon dots used in w-LED. Finally, the future development including the opportunity and challenge of the fluorescent conversion materials for solid state lighting is prospected.