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GB1336518A - Phosphor material - Google Patents

Phosphor material

Info

Publication number
GB1336518A
GB1336518A GB3239972A GB3239972A GB1336518A GB 1336518 A GB1336518 A GB 1336518A GB 3239972 A GB3239972 A GB 3239972A GB 3239972 A GB3239972 A GB 3239972A GB 1336518 A GB1336518 A GB 1336518A
Authority
GB
United Kingdom
Prior art keywords
baking
lutetium
oxide
phosphor material
july
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
GB3239972A
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of GB1336518A publication Critical patent/GB1336518A/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
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/77742—Silicates

Landscapes

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

Abstract

1336518 Luminescent materials TOKYO SHIBAURA ELECTRIC CO Ltd 11 July 1972 [16 July 1971] 32399/72 Heading C4S A phosphor material comprises a matrix of silicates of Lu and Y activated by trivalent Ce. The molar ratio of lutetium silicate to yttrium silicate is larger than 0À05 but smaller than or equal to 4. The phosphor exhibits short afterglow and luminesces from U.V. to shorter visible wavelengths as in the Fig. (not shown). Emission may be electrons or U.V., e.g. 3650Š and 2537Š. The phosphor material is prepared by mixing lutetium oxide, silicic anhydride and yttrium oxide with cerium compounds (e.g. cerous chloride, CeCl 3 .7H 2 O, hydroxide or nitrate), baking in a reducing or oxygen free atmosphere, followed by a second baking after quenching. Specific mixing proportions and baking temperatures and times are given. Carbon powders may be spread on the surface of the mixed mass during baking. Excitation by a 10 KV, 1 ÁA/cm<SP>2</SP>. electron beam is exemplified. Table II indicates peak luminescence and long wavelength limits. Lutetium oxide: yttrium oxide may be in the ratio 2x : 2(1-x) where x = 0À8, 0À6, 0À4, 0À2, 0À1, 0À05 for example, peak luminescence being as in Tables III and IV, as measured utilizing a photocathode response. Flying spot scanner and electronic video recording apparatus, fluoressent lamp and X-ray tube applications are exemplified.
GB3239972A 1971-07-16 1972-07-11 Phosphor material Expired GB1336518A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46052907A JPS5029713B1 (en) 1971-07-16 1971-07-16

Publications (1)

Publication Number Publication Date
GB1336518A true GB1336518A (en) 1973-11-07

Family

ID=12927895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3239972A Expired GB1336518A (en) 1971-07-16 1972-07-11 Phosphor material

Country Status (3)

Country Link
JP (1) JPS5029713B1 (en)
DE (1) DE2234968C3 (en)
GB (1) GB1336518A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391153A2 (en) 1989-04-07 1990-10-10 Minnesota Mining And Manufacturing Company Method for recording and reproducing a radiation image, panel and phosphors for storing a radiation image
US6624420B1 (en) * 1999-02-18 2003-09-23 University Of Central Florida Lutetium yttrium orthosilicate single crystal scintillator detector
US6818896B2 (en) 2000-08-15 2004-11-16 Saint-Gobain Cristaux & Detecteurs Scintillator crystals and their applications and manufacturing process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295989A (en) * 1980-06-23 1981-10-20 The United States Of America As Represented By The Secretary Of The Navy Luminescent hafnia composition
IT1233431B (en) * 1987-12-22 1992-03-31 Minnesota Mining & Mfg Phosphors of terbium or cerium activated ternary silicate(s)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0391153A2 (en) 1989-04-07 1990-10-10 Minnesota Mining And Manufacturing Company Method for recording and reproducing a radiation image, panel and phosphors for storing a radiation image
US6624420B1 (en) * 1999-02-18 2003-09-23 University Of Central Florida Lutetium yttrium orthosilicate single crystal scintillator detector
US6921901B1 (en) * 1999-02-18 2005-07-26 Crystal Photonics, Inc. Lutetium yttrium orthosilicate single crystal scintillator detector
US6818896B2 (en) 2000-08-15 2004-11-16 Saint-Gobain Cristaux & Detecteurs Scintillator crystals and their applications and manufacturing process

Also Published As

Publication number Publication date
DE2234968A1 (en) 1973-01-25
DE2234968C3 (en) 1979-03-08
JPS5029713B1 (en) 1975-09-25
DE2234968B2 (en) 1978-07-20

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee