GB1333835A - Luminescent materials - Google Patents
Luminescent materialsInfo
- 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
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.
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)
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 |
-
1970
- 1970-04-21 NL NL7005708A patent/NL7005708A/xx unknown
-
1971
- 1971-04-19 GB GB2723071*A patent/GB1333835A/en not_active Expired
- 1971-04-19 BR BR2307/71A patent/BR7102307D0/en unknown
Cited By (4)
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 |