GB1205319A - Luminescent materials - Google Patents

Luminescent materials

Info

Publication number
GB1205319A
GB1205319A GB50259/68A GB5025968A GB1205319A GB 1205319 A GB1205319 A GB 1205319A GB 50259/68 A GB50259/68 A GB 50259/68A GB 5025968 A GB5025968 A GB 5025968A GB 1205319 A GB1205319 A GB 1205319A
Authority
GB
United Kingdom
Prior art keywords
activated
instanced
phosphor
oct
heated
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
GB50259/68A
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 GB1205319A publication Critical patent/GB1205319A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/38—Devices for influencing the colour or wavelength of the light
    • H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/44—Devices 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
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/77342—Silicates

Landscapes

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

Abstract

1,205,319. Luminescent materials and uses thereof. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 23 Oct., 1968 [26 Oct., 1967], No. 50259/68. Heading C4S. A luminescent material activated by divalent Eu is defined by the formula wherein x + y + p + z = 1, one or two of the parameters x, y, z may be zero, and 0À05 # p # 0.003 preferably 0.04 # p # 0.006 (e.g. p = 0À01, 0.02). Specific phosphors instanced are and In preparation, the mix is heated at 1050‹ C. for 1 hr., cooled, ground and re-heated at 1150‹ C. for 1 hr., in both instances in a N 2 -H 2 (20 : 1) atmosphere. To facilitate the reaction an excess of SiO 2 may be included and a fluoride of Ca, Ba or Sr employed as flux. Emissions between 440 and 480 nm. are instanced with U.V. (e.g. 2537 Š), deep blue and electron excitation. The phosphor may be used in C.R.T.s, LP and HPMV lamps for illumination and photo-chemical processes. In a luminescent screen in a lamp, the phosphor may be mixed with manganese activated magnesium arsenate or calcium halophosphate activated by manganese and antimony.
GB50259/68A 1967-10-26 1968-10-23 Luminescent materials Expired GB1205319A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6714518A NL6714518A (en) 1967-10-26 1967-10-26

Publications (1)

Publication Number Publication Date
GB1205319A true GB1205319A (en) 1970-09-16

Family

ID=19801558

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50259/68A Expired GB1205319A (en) 1967-10-26 1968-10-23 Luminescent materials

Country Status (7)

Country Link
JP (1) JPS4837715B1 (en)
AT (1) AT279736B (en)
BE (1) BE722851A (en)
FR (1) FR1603626A (en)
GB (1) GB1205319A (en)
NL (1) NL6714518A (en)
SE (1) SE332675B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171112A (en) * 1985-01-29 1986-08-20 Sony Corp Blue fluorescent materials
EP0200279A2 (en) * 1985-05-01 1986-11-05 North American Philips Corporation Luminescent alkaline earth metal silicate and low pressure mercury vapour discharge lamp comprising such a silicate

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69628201T2 (en) * 1996-01-22 2004-03-18 Kasei Optonix, Ltd. PHOTOSTIMULATABLE PHOSPHOR
JP2007246918A (en) * 2000-09-29 2007-09-27 Sumitomo Chemical Co Ltd Fluorescent substance for vacuum ultraviolet-excited light emitting element
US20070247051A1 (en) * 2004-09-07 2007-10-25 Sumitomo Chemical Company, Limited Phosphor, Phosphor Paste and Light-Emitting Device
JP2006124644A (en) * 2004-09-28 2006-05-18 Sumitomo Chemical Co Ltd Phosphor
JP5154481B2 (en) * 2009-03-10 2013-02-27 宇部マテリアルズ株式会社 Blue light emitting phosphor
JP5971620B2 (en) * 2011-02-28 2016-08-17 宇部興産株式会社 Blue light emitting phosphor and light emitting device using the blue light emitting phosphor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171112A (en) * 1985-01-29 1986-08-20 Sony Corp Blue fluorescent materials
EP0200279A2 (en) * 1985-05-01 1986-11-05 North American Philips Corporation Luminescent alkaline earth metal silicate and low pressure mercury vapour discharge lamp comprising such a silicate
EP0200279A3 (en) * 1985-05-01 1987-06-24 North American Philips Corporation Luminescent alkaline earth metal silicate and low pressure mercury vapour discharge lamp comprising such a silicate

Also Published As

Publication number Publication date
FR1603626A (en) 1971-05-10
DE1801486B2 (en) 1977-06-02
SE332675B (en) 1971-02-15
NL6714518A (en) 1969-04-29
BE722851A (en) 1969-04-24
AT279736B (en) 1970-03-10
DE1801486A1 (en) 1969-05-29
JPS4837715B1 (en) 1973-11-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee