JPS57180688A - Production of fluorescent substance - Google Patents

Production of fluorescent substance

Info

Publication number
JPS57180688A
JPS57180688A JP6575481A JP6575481A JPS57180688A JP S57180688 A JPS57180688 A JP S57180688A JP 6575481 A JP6575481 A JP 6575481A JP 6575481 A JP6575481 A JP 6575481A JP S57180688 A JPS57180688 A JP S57180688A
Authority
JP
Japan
Prior art keywords
fluorescent substance
production
sio
residual
lamp
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.)
Pending
Application number
JP6575481A
Other languages
Japanese (ja)
Inventor
Katsuo Murakami
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6575481A priority Critical patent/JPS57180688A/en
Publication of JPS57180688A publication Critical patent/JPS57180688A/en
Pending legal-status Critical Current

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  • Luminescent Compositions (AREA)

Abstract

PURPOSE: To obtain a rare earth metal silicate fluorescent substance activated with Tb or with Ce and Tb which contains a very small amount of residual K and is excellent in performance characteristics for a lamp, by calcining a raw material mixture incorporated with KF in contact with quartz.
CONSTITUTION: In preparing a rare earth metal silicate fluorescent substance activated with Tb or with Ce and Tb, such as Y2SiO3; Tb3+ or Y2SiO3; Ce3+, Tb, a raw material mixture incorporated with KF is charged in a quartz crucible and calcined in a reducing atmosphere. A fluorescent substance containing a very small amount of residual K, excellent in performance characteristics for a lamp is obtd.
COPYRIGHT: (C)1982,JPO&Japio
JP6575481A 1981-04-30 1981-04-30 Production of fluorescent substance Pending JPS57180688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6575481A JPS57180688A (en) 1981-04-30 1981-04-30 Production of fluorescent substance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6575481A JPS57180688A (en) 1981-04-30 1981-04-30 Production of fluorescent substance

Publications (1)

Publication Number Publication Date
JPS57180688A true JPS57180688A (en) 1982-11-06

Family

ID=13296124

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6575481A Pending JPS57180688A (en) 1981-04-30 1981-04-30 Production of fluorescent substance

Country Status (1)

Country Link
JP (1) JPS57180688A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110095230A1 (en) * 2008-03-26 2011-04-28 Università Degli Studi Di Cagliari Doped rare earths orthosilicates used as optical devices for recording information

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110095230A1 (en) * 2008-03-26 2011-04-28 Università Degli Studi Di Cagliari Doped rare earths orthosilicates used as optical devices for recording information

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