JPS565883A - Method of producing fluorescent material - Google Patents
Method of producing fluorescent materialInfo
- Publication number
- JPS565883A JPS565883A JP8249379A JP8249379A JPS565883A JP S565883 A JPS565883 A JP S565883A JP 8249379 A JP8249379 A JP 8249379A JP 8249379 A JP8249379 A JP 8249379A JP S565883 A JPS565883 A JP S565883A
- Authority
- JP
- Japan
- Prior art keywords
- rare earth
- ammonium fluoride
- flux
- earth metal
- activated
- 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.)
- Granted
Links
Landscapes
- Luminescent Compositions (AREA)
Abstract
PURPOSE: On the production of fluorescent substances of rare earth metal silicate activated with rare earth metal, ammonium fluoride or acid ammonium fluoride is added as a flux and they are calcined to increase the emission efficiency and brightness of rare earth metal-activated rare earth silicate under excitation with ultraviolet rays, which is used as a fluorescent film for cathod ray tubes or discharge lamps.
CONSTITUTION: On the production of fluorescent substance of rare earth activated rare earth silicate of the formula (Ln is yttrium, lanthanum, gadolinium, lutetium; Ln' is cerium, europium or terbium; x, y satisfy following relations; 1×10-4≤x≤ 3×10-1, 0.8≤y≤2.2), at least one of ammonium fluoride and acid ammonium fluoride and, when necessary, additional barium compound are added to the starting materials for fluorescent substance as a flux by 1W7.5wt% and 0.5W3wt% respectively; they are calcined to give the objective fluorescent substance. The starting materials are provided by weighing, for example, Ln2O3, SiO2 and Ln'2O3 stoichiometrically and mixing them. The flux is mixed by a dry or wet method.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8249379A JPS565883A (en) | 1979-06-29 | 1979-06-29 | Method of producing fluorescent material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8249379A JPS565883A (en) | 1979-06-29 | 1979-06-29 | Method of producing fluorescent material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS565883A true JPS565883A (en) | 1981-01-21 |
JPS615504B2 JPS615504B2 (en) | 1986-02-19 |
Family
ID=13776010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8249379A Granted JPS565883A (en) | 1979-06-29 | 1979-06-29 | Method of producing fluorescent material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS565883A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56155283A (en) * | 1980-05-02 | 1981-12-01 | Toshiba Corp | Fluorescent substance |
FR2584731A1 (en) * | 1985-07-12 | 1987-01-16 | Tungsram Reszvenytarsasag | Process for the manufacture of terbium-activated luminescent substances based on yttrium silicate |
US4647781A (en) * | 1983-01-31 | 1987-03-03 | Hitachi Chemical Company, Ltd. | Gamma ray detector |
JPS645927U (en) * | 1987-06-24 | 1989-01-13 | ||
JPS645928U (en) * | 1987-06-24 | 1989-01-13 | ||
JPS6447827U (en) * | 1987-09-14 | 1989-03-24 | ||
JPH0242927U (en) * | 1988-09-19 | 1990-03-26 | ||
JPH02139927U (en) * | 1989-04-25 | 1990-11-22 | ||
JPH04218588A (en) * | 1990-04-20 | 1992-08-10 | Hitachi Chem Co Ltd | Single crystal scintillator and underground layer prospecting apparatus using the same |
US5540947A (en) * | 1993-11-25 | 1996-07-30 | Minnesota Mining And Manufacturing Company | X-ray intensifying screens and method of manufacturing the same |
JP2003082346A (en) * | 2001-09-13 | 2003-03-19 | Hitachi Chem Co Ltd | Phosphor composition |
WO2003083010A1 (en) * | 2002-03-28 | 2003-10-09 | Hitachi Chemical Co.,Ltd. | Phosphor and phosphor composition containing the same |
CN1308987C (en) * | 2004-07-30 | 2007-04-04 | 中国科学院上海光学精密机械研究所 | Lutetium disilicate blended submicron imaging fluorescent sreen and its preparing method |
US7329370B2 (en) | 2003-10-22 | 2008-02-12 | Korea Advanced Institute Of Science And Technology | Transparent polycrystalline ceramic scintillators and methods of preparing the same |
JP2015212311A (en) * | 2014-05-01 | 2015-11-26 | 国立大学法人東北大学 | Light emitting body and radiation detector |
KR20160064314A (en) | 2014-11-27 | 2016-06-08 | (주)금강이엔지 | Gate pump apparatus |
-
1979
- 1979-06-29 JP JP8249379A patent/JPS565883A/en active Granted
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56155283A (en) * | 1980-05-02 | 1981-12-01 | Toshiba Corp | Fluorescent substance |
US4647781A (en) * | 1983-01-31 | 1987-03-03 | Hitachi Chemical Company, Ltd. | Gamma ray detector |
FR2584731A1 (en) * | 1985-07-12 | 1987-01-16 | Tungsram Reszvenytarsasag | Process for the manufacture of terbium-activated luminescent substances based on yttrium silicate |
JPH0545619Y2 (en) * | 1987-06-24 | 1993-11-24 | ||
JPS645927U (en) * | 1987-06-24 | 1989-01-13 | ||
JPS645928U (en) * | 1987-06-24 | 1989-01-13 | ||
JPH0545618Y2 (en) * | 1987-06-24 | 1993-11-24 | ||
JPS6447827U (en) * | 1987-09-14 | 1989-03-24 | ||
JPH0437946Y2 (en) * | 1987-09-14 | 1992-09-07 | ||
JPH0242927U (en) * | 1988-09-19 | 1990-03-26 | ||
JPH02139927U (en) * | 1989-04-25 | 1990-11-22 | ||
JPH04218588A (en) * | 1990-04-20 | 1992-08-10 | Hitachi Chem Co Ltd | Single crystal scintillator and underground layer prospecting apparatus using the same |
US5540947A (en) * | 1993-11-25 | 1996-07-30 | Minnesota Mining And Manufacturing Company | X-ray intensifying screens and method of manufacturing the same |
JP2003082346A (en) * | 2001-09-13 | 2003-03-19 | Hitachi Chem Co Ltd | Phosphor composition |
WO2003083010A1 (en) * | 2002-03-28 | 2003-10-09 | Hitachi Chemical Co.,Ltd. | Phosphor and phosphor composition containing the same |
US7122129B2 (en) | 2002-03-28 | 2006-10-17 | Hitachi Chemical Co., Ltd. | Fluorescent substance and fluorescent composition containing the same |
US7329370B2 (en) | 2003-10-22 | 2008-02-12 | Korea Advanced Institute Of Science And Technology | Transparent polycrystalline ceramic scintillators and methods of preparing the same |
CN1308987C (en) * | 2004-07-30 | 2007-04-04 | 中国科学院上海光学精密机械研究所 | Lutetium disilicate blended submicron imaging fluorescent sreen and its preparing method |
JP2015212311A (en) * | 2014-05-01 | 2015-11-26 | 国立大学法人東北大学 | Light emitting body and radiation detector |
KR20160064314A (en) | 2014-11-27 | 2016-06-08 | (주)금강이엔지 | Gate pump apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS615504B2 (en) | 1986-02-19 |
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