GB1333835A - Luminescent materials - Google Patents

Luminescent materials

Info

Publication number
GB1333835A
GB1333835A GB2723071*A GB2723071A GB1333835A GB 1333835 A GB1333835 A GB 1333835A GB 2723071 A GB2723071 A GB 2723071A GB 1333835 A GB1333835 A GB 1333835A
Authority
GB
United Kingdom
Prior art keywords
replaced
luminescent materials
phosphors
phosphor
april
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
GB2723071*A
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 GB1333835A publication Critical patent/GB1333835A/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
    • C09K11/7707—Germanates
    • 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
    • C09K11/77062—Silicates

Landscapes

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

Abstract

1333835 Luminescent materials PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [21 April 1970 31 March 1971] 27230/71 Heading C4S A phosphor having an apatite structure is defined by the formula where X is Ca, Sr, Ba and/or Mg Y is La and/or Y A is Sb, Pb, Sn, Sn+Mn or Pb+Mn up to 50% of X may be replaced by Zn and/or Cd a+1À56=12+x : 2#x#0 : 4À5#y#0 4À5#p#0 : 4À5#(p+y) : 0À8#q#0À05 8#b/a#4/3 : when y=0 b/a#2 when z#a, a+b#8À66 when a#z, 10#a+b and when x=0 and 9#a+b then 1À5#y. A phosphor is prepared by firing twice at 1350‹ C. in N 2 containing 2% water a mixture of CaCO 3 , Y 2 O 3 , SiO 2 and Sb 2 O 3 . The carbonate may be replaced by the oxide or compounds which produce the oxide on heating. If Sn is present the firing atmosphere is reducing. The phosphors are used in 1.p. vapour discharge lamps. Phosphors of similar structure in which X is Zn and/or Cd, the activator is Eu and Tb and in which O is replaced by F are referred to.
GB2723071*A 1970-04-21 1971-04-19 Luminescent materials Expired GB1333835A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7005708A NL7005708A (en) 1970-04-21 1970-04-21

Publications (1)

Publication Number Publication Date
GB1333835A true GB1333835A (en) 1973-10-17

Family

ID=19809900

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2723071*A Expired GB1333835A (en) 1970-04-21 1971-04-19 Luminescent materials

Country Status (3)

Country Link
BR (1) BR7102307D0 (en)
GB (1) GB1333835A (en)
NL (1) NL7005708A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2908604A1 (en) * 1978-03-10 1979-09-20 Philips Nv FLUORESCENT, LUMINOUS SCREEN WITH SUCH A LUMINOUS FUEL AND LOW PRESSURE MERCURY DISCHARGE LAMP WITH SUCH A SCREEN
EP0052398A1 (en) * 1980-11-14 1982-05-26 Koninklijke Philips Electronics N.V. Luminescent screen and low-pressure mercury vapour discharge lamp comprising such a screen
CN112300799A (en) * 2019-08-02 2021-02-02 江苏博睿光电有限公司 Nitrogen oxide fluorescent powder and light-emitting device containing same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2908604A1 (en) * 1978-03-10 1979-09-20 Philips Nv FLUORESCENT, LUMINOUS SCREEN WITH SUCH A LUMINOUS FUEL AND LOW PRESSURE MERCURY DISCHARGE LAMP WITH SUCH A SCREEN
EP0052398A1 (en) * 1980-11-14 1982-05-26 Koninklijke Philips Electronics N.V. Luminescent screen and low-pressure mercury vapour discharge lamp comprising such a screen
CN112300799A (en) * 2019-08-02 2021-02-02 江苏博睿光电有限公司 Nitrogen oxide fluorescent powder and light-emitting device containing same
CN112300799B (en) * 2019-08-02 2022-10-04 江苏博睿光电股份有限公司 Nitrogen oxide fluorescent powder and light-emitting device containing same

Also Published As

Publication number Publication date
BR7102307D0 (en) 1973-05-03
NL7005708A (en) 1971-10-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees