Phosphors, such as new narrow-band red emitting phosphors for solid state lighting

US9546319B2 · kind B2 · utility

Assignee

• KONINIKLIJKE PHILIPS N.V. · NL

Inventors

• Peter Josef Schmidt · Aachen, DE
• Frauke Charlotte Hintze · Eindhoven, NL
• Philipp Pust · Eindhoven, NL
• Volker Weiler · Aachen, DE
• Cora Sieglinde Hecht · Eindhoven, NL
• Sebastian Florian Schmiechen · Eindhoven, NL
• Wolfgang Schnick · Gauting, DE
• Detlef Uwe Wiechert · Alsdorf, DE

Key dates

• Filing date: May 9, 2013
• Grant date: Jan 17, 2017
• Expiry date: Aug 27, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8512
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention provides, amongst others for application in a lighting unit, a phosphor having the formula M1−x−y−zZzAaBbCcDdEeN4−nOn:ESxREy (I), with M=selected from the group consisting of Ca, Sr, and Ba; Z=selected from the group consisting of monovalent Na, K, and Rb; A=selected from the group consisting of divalent Mg, Mn, Zn, and Cd; B=selected from the group consisting of trivalent B, Al and Ga; C=selected from the group consisting of tetravalent Si, Ge, Ti, and Hf; D=selected from the group consisting of monovalent Li, and Cu; E=selected for the group consisting of P, V, Nb, and Ta; ES=selected from the group consisting of divalent Eu, Sm and Yb; RE=selected from the group consisting of trivalent Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; 0≦x≦0.2; 0≦y≦0.2; 0<x+y≦0.4; 0≦z<1; 0≦n≦0.5; 0≦a≦4 (such as 2≦a≦3); 0≦b≦4; 0≦c≦4; 0≦d≦4; 0≦e≦4; a+b+c+d+e=4; and 2a+3b+4c+d+5e=10−y−n+z.