GB664822A - Luminescent material - Google Patents

Luminescent material

Info

Publication number
GB664822A
GB664822A GB999948A GB999948A GB664822A GB 664822 A GB664822 A GB 664822A GB 999948 A GB999948 A GB 999948A GB 999948 A GB999948 A GB 999948A GB 664822 A GB664822 A GB 664822A
Authority
GB
United Kingdom
Prior art keywords
zinc
barium
manganese
april
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
GB999948A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB999948A priority Critical patent/GB664822A/en
Publication of GB664822A publication Critical patent/GB664822A/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
    • C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon

Landscapes

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

Abstract

664,822. Luminescent materials. BRITISH THOMSON-HOUSTON CO., Ltd., ANDERSON, J. T., and WELLS, R. S. April 12, 1949 [April 9, 1948], No. 9999/48. Drawings to Specification. Class 39 (i). A luminescent material comprises a manganese activated zinc-barium silicate having the general formula 2ZnO.BaO.XSiO 2 , where X is between 1.7 and 12 and preferably 2. The material has a deep-red luminescence peaked at 6750‹ A, when excited by U.V. radiation of 2537‹ A. The manganese is added as MnCl 2 .HH 2 O in an amount of 5 per cent of the dry ingredients, but may vary from 2¢ to 10 per cent. Zinc is normally added as zinc oxide and barium as the carbonate, but in each case materials may be used which yield the oxide on heating. The mixture is fired at 1100‹ Œ 50‹ C. for up to 5 hours or more. The luminescence of zinc-barium-manganese silicates of proportions different from above is discussed.
GB999948A 1948-04-09 1948-04-09 Luminescent material Expired GB664822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB999948A GB664822A (en) 1948-04-09 1948-04-09 Luminescent material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB999948A GB664822A (en) 1948-04-09 1948-04-09 Luminescent material

Publications (1)

Publication Number Publication Date
GB664822A true GB664822A (en) 1952-01-16

Family

ID=9882700

Family Applications (1)

Application Number Title Priority Date Filing Date
GB999948A Expired GB664822A (en) 1948-04-09 1948-04-09 Luminescent material

Country Status (1)

Country Link
GB (1) GB664822A (en)

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