Red emitting phosphor materials for use in LED and LCD applications

US7358542B2 · kind B2 · utility

Assignee

• LUMINATION LLC · US

Inventors

• Emil Radkov · Kyle, US
• Anant Achyut Setlur · Niskayuna, US
• Alok Mani Srivastava · San Francisco, US
• Holly Ann Comanzo · Niskayuna, US
• Ljudmil Slavchev Grigorov · Sofia, BG
• Thomas Francis McNulty · Ballston Lake, US
• Daniel Doxsee · Sagamore Hills, US
• William Winder Beers · Chesterland, US

Key dates

• Filing date: Feb 2, 2005
• Grant date: Apr 15, 2008
• Expiry date: Feb 11, 2025

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/8515
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Phosphor compositions including those having the formulas A2-xEuxW1-yMoyO6, where A is selected from Y, Gd, Lu, La, and combinations thereof; and where 0.5≦x≦1.0, 0.01≦y≦1.0; MmOnX, wherein M is selected from the group of Sc, Y, a lanthanide, an alkali earth metal and mixtures thereof; X is a halogen; 1≦m≦3; and 1≦n≦4, and wherein the lanthanide doping level can range from 0.1 to 40% spectral weight; and Eu3+ activated phosphate or borate phosphors. Also disclosed are light emitting devices including a light source and at least one of the above phosphor compositions.