GB1537330A - Luminescent materials - Google Patents

Luminescent materials

Info

Publication number
GB1537330A
GB1537330A GB14769/76A GB1476976A GB1537330A GB 1537330 A GB1537330 A GB 1537330A GB 14769/76 A GB14769/76 A GB 14769/76A GB 1476976 A GB1476976 A GB 1476976A GB 1537330 A GB1537330 A GB 1537330A
Authority
GB
United Kingdom
Prior art keywords
heating
april
luminescent
luminescent materials
bivalency
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
GB14769/76A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1537330A publication Critical patent/GB1537330A/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
    • C09K11/77344—Aluminosilicates

Landscapes

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

Abstract

1537330 Luminescent materials and uses thereof PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 12 April 1976 [15 April 1975] 14769/76 Heading C4S A luminescent material comprises a divalent Eu activated fluorophlogopite of formula Me#Ba and/or Sr, up to 25 mole per cent of Si may be replaced by an equimolar quantity of Ge and 1 # x # 0; 0À25 # (p+q) # 0À01; 0À25 # p # 0 and 0À25 # q # 0. Excitation may be by long or short wave U.V. radiation or electrons. Emission wavelengths and half value widths are given. The phosphors may be employed in luminescent screens in low or high pHg discharge lamps, particular applications being specified. Preparations may be by heating oxides or compounds decomposable to same. Excesses of fluorine and silicate, e.g. SiF 4 or SiO 2 and NH 4 F, may be used. Heating may be above the m.p. but is preferably below, and in several steps. At least the final heating is in a weakly reducing atmosphere to ensure bivalency of the Eu. Detailed examples are included.
GB14769/76A 1975-04-15 1976-04-12 Luminescent materials Expired GB1537330A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7504440A NL7504440A (en) 1975-04-15 1975-04-15 LUMINESCENT SCREEN.

Publications (1)

Publication Number Publication Date
GB1537330A true GB1537330A (en) 1978-12-29

Family

ID=19823578

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14769/76A Expired GB1537330A (en) 1975-04-15 1976-04-12 Luminescent materials

Country Status (7)

Country Link
JP (1) JPS5927786B2 (en)
BE (1) BE840702A (en)
CA (1) CA1082910A (en)
DE (1) DE2614255C2 (en)
FR (1) FR2307863A1 (en)
GB (1) GB1537330A (en)
NL (1) NL7504440A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102925145A (en) * 2011-08-12 2013-02-13 东贝光电科技股份有限公司 aluminate compound fluorescent powder

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597511A (en) * 1992-12-31 1997-01-28 Osram Sylvania Inc. Phosphor and method of making same
US5306441A (en) * 1992-12-31 1994-04-26 Gte Products Corporation Method of preparing fluoroplogopite phosphor
US5616285A (en) * 1992-12-31 1997-04-01 Osram Sylvania Inc. Phosphor and method of making same
US5567351A (en) * 1992-12-31 1996-10-22 Osram Sylvania Inc. Phosphor and method of making same
US5567352A (en) * 1992-12-31 1996-10-22 Osram Sylvania Inc. Phosphor and method of making same
US5531926A (en) * 1992-12-31 1996-07-02 Osram Sylvania Inc. Phosphor and method of making same
US5531928A (en) * 1992-12-31 1996-07-02 Osram Sylvania Inc. Phosphor and method of making same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE789747A (en) * 1971-10-07 1973-04-05 Philips Nv LUMINESCENT SCREEN

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102925145A (en) * 2011-08-12 2013-02-13 东贝光电科技股份有限公司 aluminate compound fluorescent powder

Also Published As

Publication number Publication date
CA1082910A (en) 1980-08-05
JPS51124684A (en) 1976-10-30
FR2307863B1 (en) 1980-03-21
NL7504440A (en) 1976-10-19
DE2614255A1 (en) 1976-10-28
BE840702A (en) 1976-10-13
FR2307863A1 (en) 1976-11-12
JPS5927786B2 (en) 1984-07-07
DE2614255C2 (en) 1984-12-06

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Legal Events

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