GB1137576A - Improvements in yttrium orthovanadate phosphor - Google Patents

Improvements in yttrium orthovanadate phosphor

Info

Publication number
GB1137576A
GB1137576A GB5315866A GB5315866A GB1137576A GB 1137576 A GB1137576 A GB 1137576A GB 5315866 A GB5315866 A GB 5315866A GB 5315866 A GB5315866 A GB 5315866A GB 1137576 A GB1137576 A GB 1137576A
Authority
GB
United Kingdom
Prior art keywords
yttrium
content
moles per
range
phosphor
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
GB5315866A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1137576A publication Critical patent/GB1137576A/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
    • C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
    • C09K11/7794—Vanadates; Chromates; Molybdates; Tungstates

Landscapes

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

Abstract

1,137,576. Luminescent materials. GENERAL ELECTRIC CO. 28 Nov., 1966 [29 Dec., 1965], No. 53158/66. Heading C4S. A composition consisting of (a) yttrium oxide used in the manufacture of yttrium vanadate: europium phosphors, or (b) a phosphor having the general formula Y 1-x Eu x YO 4 wherein x is from 0.01 to 0-2, is characterized in that said composition (a) or (b) contains Tb in the range from a small amount effect to improve the luminescent characteristics of (b) or the phosphors produced from (a), to up to 500 moles per million moles of the yttrium content of (a) or yttrium plus europium content of (b), e.g. at least 5 or 100 to 150 within the range 35 to 150 moles per million. The natural Tb level of Y 2 O 3 may be reduced by blending with low Tb content Y 2 O 3 and raised by mixing with Tb 4 O 7 dissolved in HNO 3 . In a preferred preparation Y 2 O 3 , Eu 2 O 3 and Tb 4 O 7 dissolved in HNO 3 are precipitated as oxalate with oxalic acid, fired to (YEuTb) 2 0 3 , Y 2 0 5 is added in amount 1 to 4 (e.g. 1.9) moles per mole of (YEuTb) 2 O 3 and refired; firing temperatures range from 700‹ to 1100‹ C. for 30 to 60 mins. Application to colour T.V. is instanced.
GB5315866A 1965-12-29 1966-11-28 Improvements in yttrium orthovanadate phosphor Expired GB1137576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51748765A 1965-12-29 1965-12-29

Publications (1)

Publication Number Publication Date
GB1137576A true GB1137576A (en) 1968-12-27

Family

ID=24060017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5315866A Expired GB1137576A (en) 1965-12-29 1966-11-28 Improvements in yttrium orthovanadate phosphor

Country Status (4)

Country Link
JP (1) JPS4820109B1 (en)
DE (1) DE1592880B1 (en)
FR (1) FR1518720A (en)
GB (1) GB1137576A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102337129A (en) * 2011-07-22 2012-02-01 彩虹集团电子股份有限公司 Red luminescent fluorescent powder for FED (Field Emission Display) and preparation method thereof
US8232715B2 (en) 2007-07-05 2012-07-31 Sony Corporation Phosphor, fluorescent lamp using the same, and display device and illuminating device using fluorescent lamp

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008189761A (en) * 2007-02-02 2008-08-21 Keio Gijuku Method for producing particulate fluorescent material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8232715B2 (en) 2007-07-05 2012-07-31 Sony Corporation Phosphor, fluorescent lamp using the same, and display device and illuminating device using fluorescent lamp
CN102337129A (en) * 2011-07-22 2012-02-01 彩虹集团电子股份有限公司 Red luminescent fluorescent powder for FED (Field Emission Display) and preparation method thereof

Also Published As

Publication number Publication date
FR1518720A (en) 1968-03-29
JPS4820109B1 (en) 1973-06-19
DE1592880B1 (en) 1971-04-08

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