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GB688895A - Improvements in the preparation of luminescent materials - Google Patents

Improvements in the preparation of luminescent materials

Info

Publication number
GB688895A
GB688895A GB1884447A GB1884447A GB688895A GB 688895 A GB688895 A GB 688895A GB 1884447 A GB1884447 A GB 1884447A GB 1884447 A GB1884447 A GB 1884447A GB 688895 A GB688895 A GB 688895A
Authority
GB
United Kingdom
Prior art keywords
isotope
activator
radio
phosphor
active
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
GB1884447A
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 Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Priority to GB1884447A priority Critical patent/GB688895A/en
Publication of GB688895A publication Critical patent/GB688895A/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
    • C09K11/04—Luminescent, e.g. electroluminescent, chemiluminescent materials containing natural or artificial radioactive elements or unspecified radioactive elements

Landscapes

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

Abstract

688,895. Luminescent materials. PHILIPS LAMPS, Ltd., and ROTHSCHILD, S. Aug. 14, 1948 [July 15, 1947], No. 18844/47. Class 39(i) At least one of the constituents of a luminescent material is a radio-active element or isotope forming an integral constituent of the phosphor, and not a mechanical addition for self-excitation purposes to an already complete phosphor. Specific examples include the preparation of a SrS phosphor containing the radio-active isotope Sr 90 in the matrix, a silver-activated ZnS phosphor containing the isotope Ag 110 in the activator, and a lead-activated SrS phosphor containing the isotope Pb 214 (Ra B) as activator. The Provisional Specification also refers to the use of the radio-active isotope Cu 64 as an activator for zinc sulphide phosphors. Reference has been directed by the Comptroller to the document "Fluoro-chemistry," by Jack De Ment (pages 324-328).
GB1884447A 1947-07-15 1947-07-15 Improvements in the preparation of luminescent materials Expired GB688895A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1884447A GB688895A (en) 1947-07-15 1947-07-15 Improvements in the preparation of luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1884447A GB688895A (en) 1947-07-15 1947-07-15 Improvements in the preparation of luminescent materials

Publications (1)

Publication Number Publication Date
GB688895A true GB688895A (en) 1953-03-18

Family

ID=10119372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1884447A Expired GB688895A (en) 1947-07-15 1947-07-15 Improvements in the preparation of luminescent materials

Country Status (1)

Country Link
GB (1) GB688895A (en)

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