GB1186366A - Fluorescent Phosphor Composition - Google Patents

Fluorescent Phosphor Composition

Info

Publication number
GB1186366A
GB1186366A GB2682267A GB2682267A GB1186366A GB 1186366 A GB1186366 A GB 1186366A GB 2682267 A GB2682267 A GB 2682267A GB 2682267 A GB2682267 A GB 2682267A GB 1186366 A GB1186366 A GB 1186366A
Authority
GB
United Kingdom
Prior art keywords
produce
europium
phosphor composition
precipitate
strontium
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
GB2682267A
Inventor
Charles Frederic Chenot
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Priority to GB2682267A priority Critical patent/GB1186366A/en
Publication of GB1186366A publication Critical patent/GB1186366A/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
    • C09K11/774—Borates

Landscapes

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

Abstract

1,186,366. Luminescent materials. SYLVANIA ELECTRIC PRODUCTS Inc. 9 June, 1967, No. 26822/67. Addition to 1,115,290. Heading C4S. A strontium fluoroborate phosphor is of formula 5r 0 . 90 to Sr 0 . 99 F 0 . 50 to F 1 . 00 8 3 . 0 to B 4 . 45 O 5 to O 7 . 45 Eu 0 . 005 to Eu 0 . 05 or Sr 1-x F 0À67 B 4 O 6À67 : Eu x , where x is between 0-005 to 0.05. The europium is preferably in the divalent state. In preparation, strontium nitrate, boric acid, and Eu 2 O 3 are dissolved in water at 95‹ C. and an acetone and ammonium hydroxide mixture added to produce a SrO.3B 2 O 2 .5H 2 O plus europium borate precipitate. The dried precipitate with SrF 2 additions is fired in air at 800‹ C., pulverized and refired at 890‹ C. in 1 to 2% hydrogen in nitrogen for instance. Excitation by a low pressure mercury discharge to produce U.V. emission is mentioned.
GB2682267A 1967-06-09 1967-06-09 Fluorescent Phosphor Composition Expired GB1186366A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2682267A GB1186366A (en) 1967-06-09 1967-06-09 Fluorescent Phosphor Composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2682267A GB1186366A (en) 1967-06-09 1967-06-09 Fluorescent Phosphor Composition

Publications (1)

Publication Number Publication Date
GB1186366A true GB1186366A (en) 1970-04-02

Family

ID=10249795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2682267A Expired GB1186366A (en) 1967-06-09 1967-06-09 Fluorescent Phosphor Composition

Country Status (1)

Country Link
GB (1) GB1186366A (en)

Similar Documents

Publication Publication Date Title
GB1208594A (en) Preparation of phosphors
GB1127166A (en) Process for preparing phosphors
GB1289176A (en)
US3431215A (en) Europium activated strontium fluoroborate phosphor
GB1261799A (en) Orthophosphate phosphors
GB1186366A (en) Fluorescent Phosphor Composition
GB1166221A (en) Lithium and Rare-Earth Activated Alkaline-Earth Metal Pyrophosphate Phosphors.
GB1271388A (en) Method of making phosphors
GB1275167A (en) Luminescent materials
GB1205139A (en) Improvements relating to luminescent materials
GB1516463A (en) Cerium-activated yttriumaluminate phosphor of improved efficiency
GB1355094A (en) Europium samarium co-activated strontium fluoroborate phosphor
GB1125180A (en) Improvements in calcium halophosphate phosphors
US3431216A (en) Europium activated strontium haloborate phosphor
GB864343A (en) Improvements in luminescent materials
GB1532465A (en) Phosphors
US2455415A (en) Ultraviolet emitting magnesium pyrophosphate phosphor
GB1257322A (en)
GB1333835A (en) Luminescent materials
GB1110290A (en) Europium-activated yttrium-gadolinium oxide type phosphors
GB1510429A (en) Luminescent materials
GB1137576A (en) Improvements in yttrium orthovanadate phosphor
GB1192951A (en) Improvements in or relating to Luminescent Materials and their manufacture
GB1382530A (en) Magnesium aluminate gallate phosphor
GB1200935A (en) Improvements in rare earth phosphors activated with bismuth

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee