GB1419169A - Luminescent materials - Google Patents

Luminescent materials

Info

Publication number
GB1419169A
GB1419169A GB2406973A GB2406973A GB1419169A GB 1419169 A GB1419169 A GB 1419169A GB 2406973 A GB2406973 A GB 2406973A GB 2406973 A GB2406973 A GB 2406973A GB 1419169 A GB1419169 A GB 1419169A
Authority
GB
United Kingdom
Prior art keywords
screens
luminescent
alkaline earth
examples
luminescent materials
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
GB2406973A
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 GB1419169A publication Critical patent/GB1419169A/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
    • C09K11/7732—Halogenides
    • C09K11/7733—Halogenides with alkali or alkaline earth metals

Landscapes

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

Abstract

1419169 Luminescent materials and uses thereof PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 21 May 1973 [24 May 1972] 24069/73 Heading C4S A luminescent alkaline earth metal fluorohalide activated by divalent Eu is of the tetragonal structure and of the formula where 0#y#0À20, x+y+p#1, a+b#1 and 0.001#p#0À20. Further optional concentrations are given, with uses in luminescent screens, Hg vapour lamps (e.g. high or low pressure, the latter for photochemical processes such document reproduction and hardening lacquers), X- ray intensifier screens in combination with photographic material and c.r.t.s (e.g. double coated screens in which the first is electron excited to emit U.V. to exite the second layer) short and long U.V. and electron excitation is also instanced. Preferably Ca is not present. Fabrication may be by heating a halide mix, or by starting with oxides or carbonates of the alkaline earth metals and Eu, and ammonium halides. Examples are described with successive heatings (500‹ to 900‹ C.) in a weakly reducing atmosphere of nitrogen and 0À1 to 10% vol. of hydrogen. Tables I and II (not shown) include thirty one specific phosphor examples.
GB2406973A 1972-05-24 1973-05-21 Luminescent materials Expired GB1419169A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7206945A NL7206945A (en) 1972-05-24 1972-05-24

Publications (1)

Publication Number Publication Date
GB1419169A true GB1419169A (en) 1975-12-24

Family

ID=19816106

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2406973A Expired GB1419169A (en) 1972-05-24 1973-05-21 Luminescent materials

Country Status (10)

Country Link
JP (1) JPS5128591B2 (en)
AU (1) AU5593573A (en)
BE (1) BE799896A (en)
CA (1) CA1003206A (en)
DE (1) DE2324926A1 (en)
ES (1) ES415008A1 (en)
FR (1) FR2185667B1 (en)
GB (1) GB1419169A (en)
IT (1) IT987749B (en)
NL (1) NL7206945A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080306A (en) 1976-05-05 1978-03-21 E. I. Du Pont De Nemours And Company Preparation of BaFCl:Eu phosphors
DE2928244A1 (en) * 1978-07-12 1980-01-24 Fuji Photo Film Co Ltd METHOD AND DEVICE FOR RECORDING AND PLAYING BACK A RADIATION IMAGE
EP0022564B1 (en) * 1979-07-11 1985-10-23 Fuji Photo Film Co., Ltd. Method of and apparatus for obtaining a radiation image by use of a stimulable phosphor

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL176618C (en) * 1974-10-01 1985-05-01 Philips Nv LUMINESCENT SCREEN, PROCESS FOR THE PREPARATION OF A LUMINESCENT NATURAL ALKALINE METAL FLUORIDE HALOGENIDE ACTIVATED WITH TWO-VALUE EUROPE.
GB1501267A (en) * 1975-04-04 1978-02-15 Ciba Geigy Ag X-ray screens
JPS52786A (en) * 1975-06-24 1977-01-06 Dainippon Toryo Co Ltd Sensitized paper for radiation
US4054799A (en) 1975-10-23 1977-10-18 Gte Sylvania Incorporated X-ray phosphor composition and x-ray intensifying screen employing same
DE2654387C3 (en) * 1975-12-05 1979-09-13 E.I. Du Pont De Nemours And Co., Wilmington, Del. (V.St.A.) Alkaline earth fluorine halide phosphor
JPS6042837B2 (en) * 1978-07-12 1985-09-25 化成オプトニクス株式会社 fluorescent material
JPS5442382A (en) * 1978-08-21 1979-04-04 Dainippon Toryo Co Ltd Fluoroscent substance
JPS584957B2 (en) * 1978-08-21 1983-01-28 化成オプトニクス株式会社 discharge lamp
DE3462049D1 (en) * 1983-10-14 1987-02-19 Fuji Photo Film Co Ltd Phosphor, radiation image recording and reproducing method and radiation image storage panel employing the same
DE3574985D1 (en) * 1984-07-13 1990-02-01 Fuji Photo Film Co Ltd PHOSPHORUS, METHOD FOR STORING AND REPLAYING A RADIATION IMAGE, AND SCREEN FOR STORING A RADIATION IMAGE.
JPS61150267U (en) * 1985-03-11 1986-09-17
EP0345903B1 (en) * 1988-06-10 1993-04-28 Agfa-Gevaert N.V. Photostimulable phosphor
FR2797760B1 (en) 1999-08-30 2002-03-29 Trophy Radiologie PROCESS FOR OBTAINING A RADIOGRAPHIC IMAGE OF A TOOTH AND ITS ENVIRONMENT, AND DEVICES FOR IMPLEMENTING THIS PROCESS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA896453A (en) * 1972-03-28 Gte Sylvania Incorporated Fluorescent phosphors
US2372071A (en) * 1942-01-26 1945-03-20 Gen Electric Luminescent material
US2303963A (en) * 1942-04-01 1942-12-01 Eastman Kodak Co Method of making luminescent material
GB1254271A (en) * 1967-08-25 1971-11-17 Eastman Kodak Co Phosphors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080306A (en) 1976-05-05 1978-03-21 E. I. Du Pont De Nemours And Company Preparation of BaFCl:Eu phosphors
DE2928244A1 (en) * 1978-07-12 1980-01-24 Fuji Photo Film Co Ltd METHOD AND DEVICE FOR RECORDING AND PLAYING BACK A RADIATION IMAGE
EP0022564B1 (en) * 1979-07-11 1985-10-23 Fuji Photo Film Co., Ltd. Method of and apparatus for obtaining a radiation image by use of a stimulable phosphor

Also Published As

Publication number Publication date
NL7206945A (en) 1973-11-27
JPS4942582A (en) 1974-04-22
ES415008A1 (en) 1976-06-16
AU5593573A (en) 1974-11-21
BE799896A (en) 1973-11-22
FR2185667A1 (en) 1974-01-04
JPS5128591B2 (en) 1976-08-20
IT987749B (en) 1975-03-20
FR2185667B1 (en) 1977-07-29
CA1003206A (en) 1977-01-11
DE2324926A1 (en) 1973-12-13

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Legal Events

Date Code Title Description
415 Specification amended (sect. 15/1949)
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee