RED LIGHT FLUORESCENT MATERIAL, METHOD FOR PRODUCING THE SAME, AND WHITE LIGHT FLUORESCENCE DEVICE

• Main Authors: CHIU CHUANG-HUNG, MO CHI-NENG, CHIN TOMEI
• Format: Patent
• Language: English
• Published: 14.10.2010
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS; DYES; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

PROBLEM TO BE SOLVED: To provide a red light-emitting fluorescent material suitable for emitting red light by being excited with a first light. SOLUTION: The red light-emitting fluorescent material is characterized by the chemical formula (1): A3B2C3(MO4)8:Eu3+(in the formula, A represents Li, Na, K, Rb, Cs or Ag; B represents Mg, Ca, Sr or Ba; C represents Y, Gd or La; M represents Mo, W or a combination of Mo and W). The red light-emitting fluorescent material has high luminance and good color purity. In addition, since the component of the red light-emitting fluorescent material is an oxide, the fluorescent material has advantages of good chemical stability and long lifetime. COPYRIGHT: (C)2011,JPO&INPIT