Highly efficient all-nitride phosphor-converted white light emitting diode

被引：532

作者：

Mueller-Mach, R

Mueller, G

Krames, MR

Höppe, HA

Stadler, F

Schnick, W

Juestel, T

Schmidt, P

机构：

[1] Univ Munich, Dept Chem & Biochem, D-81377 Munich, Germany

[2] Lumileds Lighting US, LLC, San Jose, CA 95131 USA

[3] Univ Freiburg, Inst Inorgan & Analyt Chem, D-79104 Freiburg, Germany

[4] Univ Appl Sci Munster, D-48565 Steinfurt, Germany

[5] Philips Res Labs, D-52066 Aachen, Germany

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2005年 / 202卷 / 09期

关键词：

D O I：

10.1002/pssa.200520045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The development and demonstration of a highly efficient warm-white all-nitride phosphor-converted light emitting diode (pc-LED) is presented utilizing a GaN based quantum well blue LED and two novel nitrogen containing luminescent materials, both of which are doped with Eu2+. For color conversion of the primary blue the nitridosilicates M2Si5N8 (orange-red) and MSi2O2N2 (yellow-green), with M = alkaline earth, were employed, thus achieving a high luminous efficiency (25 lumen/W at I W input), excellent color quality (correlated color temperature CCT = 3200 K, general color rendering index Ra > 90) and the highest proven color stability of any pc-LED obtained so far. Thus, these novel all-nitride LEDs are superior to both incandescent and fluorescent lamps and may therefore become the next generation of general lighting sources.

引用

页码：1727 / 1732

页数：6