New red phosphors enable white LEDs to show both high luminous efficacy and color rendering index

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2019,（13）
• 页码范围: 879-880
• 页数: 2页
• 语种: 英文

摘要

Today,energy saving and emission reduction are two big global issues.Power artificial lighting currently accounts for about 20％ of the total global electricity consumption [1].Solid-state lighting based on light-emitting diodes (LEDs) is bringing about a revolution in energy-efficient lighting,and the lighting industry is transformed into a rapidly growing business sector [2,3].The solid-state lighting technology is basically based on phosphor-converted white LEDs (pc-LEDs),which are commonly fabricated by using the combination of InGaN blue-emitting LED chips and luminescent materials as color converters [4,5].Luminescent materials play a critical role in fabricating high-performance LED devices,which is strongly linked to LED's luminous efficacy,stability,color rendering index (CRI),correlated color temperature (CCT) and operation lifetime [6-8].Therefore,the discovery of more efficient desirable phosphor materials is essential.