Title:
ALKALINE EARTH METAL SILICATE LUMINOPHORES AND METHOD FOR IMPROVING LONG TERM STABILITY THEREOF
Document Type and Number:
Japanese Patent JP2016029191
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide alkaline earth metal silicate luminophores with improved long term stability, and a method of producing the same.SOLUTION: A luminophore improved in long term stability absorbs radiation in a first wavelength range and emits radiation in a second wavelength range different from the first wavelength range. The luminophore has a particle shape, comprises alkaline earth metal silicate represented by EASiOas a base lattice, and is doped with an activator. The particles have surfaces chemically modified such that at least portions of the surfaces are formed from a chemical compound of the general formula EAZ, (where EAZis formed from EA(PO)and the general formula EAZ(where Zis formed from anions which can be chemically combined with the EA cations and represented by one or more of the chemical formulas SO, CO, CO, SiOand SiF) and v is equal to the ion charge of the anions Z).SELECTED DRAWING: None
Inventors:
WOLFGANG KEMPFERT
SYLKE ROESLER
SVEN ROESLER
DUAN CHENG-JUN
RUDOLF DENNSTEDT
SYLKE ROESLER
SVEN ROESLER
DUAN CHENG-JUN
RUDOLF DENNSTEDT
Application Number:
JP2015234398A
Publication Date:
March 03, 2016
Filing Date:
December 01, 2015
Export Citation:
Assignee:
LEUCHTSTOFFWERK BREITUNGEN
International Classes:
C09K11/08; C09K11/59
Domestic Patent References:
| JPH08319483A | 1996-12-03 | |||
| JPH10330745A | 1998-12-15 | |||
| JP2001089761A | 2001-04-03 | |||
| JP2009132902A | 2009-06-18 | |||
| JP2004327492A | 2004-11-18 | |||
| JP2000303065A | 2000-10-31 | |||
| JP2013507508A | 2013-03-04 |
Attorney, Agent or Firm:
Iwao Yamaguchi