GB697938A - Improvements in or relating to luminescent materials - Google Patents

Improvements in or relating to luminescent materials

Info

Publication number
GB697938A
GB697938A GB24331/51A GB2433151A GB697938A GB 697938 A GB697938 A GB 697938A GB 24331/51 A GB24331/51 A GB 24331/51A GB 2433151 A GB2433151 A GB 2433151A GB 697938 A GB697938 A GB 697938A
Authority
GB
United Kingdom
Prior art keywords
luminescent materials
relating
oct
mol
per cent
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
GB24331/51A
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 Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB697938A publication Critical patent/GB697938A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/20—Luminescent screens characterised by the luminescent material
    • 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
    • C09K11/7715—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing cerium
    • C09K11/7723—Phosphates
    • C09K11/7724—Phosphates with 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

697,938. Luminescent materials. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 18, 1951 [Oct. 21, 1950], No. 24331/51. Class 39(i) A luminescent material of short afterglow comprises a cerium actuated phosphate of the formula A B PO 4 where A is one or more of the metals sodium, potassium, caesium and rubidium and B is one or more of the metals calcium, strontium and barium. The cerium content is .01-5 mol. per cent, preferably 0.2 mol. per cent, in sodium barium phosphate. Specification 512,154 is referred to.
GB24331/51A 1950-10-21 1951-10-18 Improvements in or relating to luminescent materials Expired GB697938A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL178656X 1950-10-21

Publications (1)

Publication Number Publication Date
GB697938A true GB697938A (en) 1953-09-30

Family

ID=19777276

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24331/51A Expired GB697938A (en) 1950-10-21 1951-10-18 Improvements in or relating to luminescent materials

Country Status (6)

Country Link
AT (1) AT178656B (en)
CH (1) CH301206A (en)
DE (1) DE897746C (en)
DK (1) DK77902C (en)
ES (1) ES200042A1 (en)
GB (1) GB697938A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1150774B (en) * 1955-07-22 1963-06-27 Thorn Electrical Ind Ltd Alkaline earth phosphate phosphor

Also Published As

Publication number Publication date
DK77902C (en) 1954-08-02
DE897746C (en) 1953-11-23
ES200042A1 (en) 1952-02-16
CH301206A (en) 1954-08-31
AT178656B (en) 1954-06-10

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