GB1087655A - Improvements in or relating to luminescent materials - Google Patents

Improvements in or relating to luminescent materials

Info

Publication number
GB1087655A
GB1087655A GB15950/65A GB1595065A GB1087655A GB 1087655 A GB1087655 A GB 1087655A GB 15950/65 A GB15950/65 A GB 15950/65A GB 1595065 A GB1595065 A GB 1595065A GB 1087655 A GB1087655 A GB 1087655A
Authority
GB
United Kingdom
Prior art keywords
hydrogen
ray
strontium
rays
cathode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB15950/65A
Inventor
Christopher Robin John Leete
Alfred Hamilton Mckeag
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB15950/65A priority Critical patent/GB1087655A/en
Publication of GB1087655A publication Critical patent/GB1087655A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/77342—Silicates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

A luminescent material is composed of silicon, oxygen, one or more of the alkaline earth metals, barium, strontium or calcium, one or both of the halogens fluorine and chlorine and divalent europium, the latter 0.5 to 20%, preferably 1-5%, by weight of the material, the material being excited by U.V. radiation of 2537< >rA and 3650< >rA, by cathode rays and X-rays. A method of manufacturing is described in which the mixture is heated in a reducing atmosphere of hydrogen or hydrogen and nitrogen mixture at a temperature 825 DEG to 975 DEG C. The preferred material is strontium chlorosilicate and an X-ray analysis of the crystal structure is given. The temperature dependence of luminescence is only very slight up to 300 DEG C. Specific starting mixtures are described including Ca + Cl, Ba + Cl, and Sr + F. Incorporation of material in electrical devices, such as high-pressure and low-pressure mercury lamps, X-ray screens and cathode-ray tubes is mentioned.
GB15950/65A 1965-04-14 1965-04-14 Improvements in or relating to luminescent materials Expired GB1087655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB15950/65A GB1087655A (en) 1965-04-14 1965-04-14 Improvements in or relating to luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15950/65A GB1087655A (en) 1965-04-14 1965-04-14 Improvements in or relating to luminescent materials

Publications (1)

Publication Number Publication Date
GB1087655A true GB1087655A (en) 1967-10-18

Family

ID=10068482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15950/65A Expired GB1087655A (en) 1965-04-14 1965-04-14 Improvements in or relating to luminescent materials

Country Status (1)

Country Link
GB (1) GB1087655A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144175A (en) * 1976-05-26 1977-12-01 Dainippon Toryo Co Ltd Luminous element in use of gaseous discharge
US4128498A (en) 1977-03-28 1978-12-05 Dai Nippon Toryo Co., Ltd. Chlorosilicate phosphor
EP0010020A1 (en) * 1978-10-03 1980-04-16 Rhone-Poulenc Industries Luminescent hydrated strontium-fluosilicates, process for their preparation, their use and process for producing black light by means of these compositions
US4220551A (en) * 1978-07-28 1980-09-02 Rhone-Poulenc Industries Novel blue light emitting luminophors
EP0102051A1 (en) * 1982-08-24 1984-03-07 Fuji Photo Film Co., Ltd. Process for the preparation of phosphor
EP0107192A1 (en) * 1982-10-22 1984-05-02 Fuji Photo Film Co., Ltd. Radiation image recording and reproducing method and radiation image storage panel employed for the same
WO2006104860A3 (en) * 2005-03-25 2006-12-21 Sarnoff Corp Metal silicate-silica-based polymorphous phosphors and lighting devices
US7368179B2 (en) 2003-04-21 2008-05-06 Sarnoff Corporation Methods and devices using high efficiency alkaline earth metal thiogallate-based phosphors
CN100555658C (en) * 2005-03-25 2009-10-28 沙诺夫公司 Metal silicate-silica-based polymorphous phosphors and light-emitting device
US7713442B2 (en) 2006-10-03 2010-05-11 Lightscape Materials, Inc. Metal silicate halide phosphors and LED lighting devices using the same
US8906262B2 (en) 2005-12-02 2014-12-09 Lightscape Materials, Inc. Metal silicate halide phosphors and LED lighting devices using the same

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52144175A (en) * 1976-05-26 1977-12-01 Dainippon Toryo Co Ltd Luminous element in use of gaseous discharge
US4128498A (en) 1977-03-28 1978-12-05 Dai Nippon Toryo Co., Ltd. Chlorosilicate phosphor
US4220551A (en) * 1978-07-28 1980-09-02 Rhone-Poulenc Industries Novel blue light emitting luminophors
EP0010020A1 (en) * 1978-10-03 1980-04-16 Rhone-Poulenc Industries Luminescent hydrated strontium-fluosilicates, process for their preparation, their use and process for producing black light by means of these compositions
FR2438012A1 (en) * 1978-10-03 1980-04-30 Rhone Poulenc Ind HYDRATED STRONTIUM FLUOSILICATES, ACTIVE AT DIVALENT EUROPE
EP0102051A1 (en) * 1982-08-24 1984-03-07 Fuji Photo Film Co., Ltd. Process for the preparation of phosphor
EP0107192A1 (en) * 1982-10-22 1984-05-02 Fuji Photo Film Co., Ltd. Radiation image recording and reproducing method and radiation image storage panel employed for the same
US7368179B2 (en) 2003-04-21 2008-05-06 Sarnoff Corporation Methods and devices using high efficiency alkaline earth metal thiogallate-based phosphors
WO2006104860A3 (en) * 2005-03-25 2006-12-21 Sarnoff Corp Metal silicate-silica-based polymorphous phosphors and lighting devices
US7276183B2 (en) * 2005-03-25 2007-10-02 Sarnoff Corporation Metal silicate-silica-based polymorphous phosphors and lighting devices
CN100555658C (en) * 2005-03-25 2009-10-28 沙诺夫公司 Metal silicate-silica-based polymorphous phosphors and light-emitting device
US8906262B2 (en) 2005-12-02 2014-12-09 Lightscape Materials, Inc. Metal silicate halide phosphors and LED lighting devices using the same
US7713442B2 (en) 2006-10-03 2010-05-11 Lightscape Materials, Inc. Metal silicate halide phosphors and LED lighting devices using the same

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