JPS57133182A - Fluorescent substance - Google Patents
Fluorescent substanceInfo
- Publication number
- JPS57133182A JPS57133182A JP1807881A JP1807881A JPS57133182A JP S57133182 A JPS57133182 A JP S57133182A JP 1807881 A JP1807881 A JP 1807881A JP 1807881 A JP1807881 A JP 1807881A JP S57133182 A JPS57133182 A JP S57133182A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent substance
- fluorescent
- lithium
- alkali metal
- terbium
- 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
Links
Abstract
PURPOSE: A fluorescent substance that is prepared by adding a specific amount of an alkali metal to a fluorescent substance of rare earth orthophosphate activated with cerium and terbium, thus showing remarkaly increased luminous efficiency and reduced deterioration at the baking stage in the production of fluorescent tubes.
CONSTITUTION: A novel fluorescent substance that emits green light with ultraviolet rays is obtained by adding an alkali metal such as lithium or sodium to a fluorescent substance of rare earth orthophosphate activated with cerium and terbium by 6×10-1W1×10-3 atom per mole of the fluorescent substance.
EFFECT: Even when lithium is used as the alkali metal, the line spectrum characterized by lithium is not observed with in the above concentration range.
USE: The resultant composition is suitably used for fluorescent lamps of high efficiency and color redering properties, e.g., fluorescent lamps for lighting using three primary colors.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1807881A JPS57133182A (en) | 1981-02-12 | 1981-02-12 | Fluorescent substance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1807881A JPS57133182A (en) | 1981-02-12 | 1981-02-12 | Fluorescent substance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57133182A true JPS57133182A (en) | 1982-08-17 |
Family
ID=11961611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1807881A Pending JPS57133182A (en) | 1981-02-12 | 1981-02-12 | Fluorescent substance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57133182A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5920378A (en) * | 1982-07-26 | 1984-02-02 | Mitsubishi Electric Corp | Fluophor and its use in low-pressure mercury vapor luminescent lamp |
US5091110A (en) * | 1990-05-14 | 1992-02-25 | Gte Products Corporation | Method of making lanthanum cerium terbium phosphate phosphor |
US5106532A (en) * | 1990-05-14 | 1992-04-21 | Gte Products Corporation | Method of making lanthanum cerium terbium phosphate phosphor |
US5116532A (en) * | 1990-05-14 | 1992-05-26 | Gte Products Corporation | Method of making lanthanum cerium terbium phosphate phosphor |
US5132042A (en) * | 1990-05-14 | 1992-07-21 | Gte Products Corporation | Method of making lanthanum cerium terbium phosphate phosphor with improved brightness |
FR2679242A1 (en) * | 1991-07-19 | 1993-01-22 | Rhone Poulenc Chimie | MIXED PHOSPHATE OF LANTHANE, TERBIUM AND CERIUM, PROCESS FOR THE PRODUCTION THEREOF FROM INSOLUBLE SALTS FROM RARE EARTHS |
US5562889A (en) * | 1991-02-04 | 1996-10-08 | Rhone-Poulenc Chimie | Cerium/lanthanum/terbium mixed phosphates |
US20110272634A1 (en) * | 2008-11-20 | 2011-11-10 | Rhodia Operations | Cerium and/or terbium phosphate optionally with lanthanum, phosphor resulting from said phosphate and methods for making same |
US20110272632A1 (en) * | 2008-11-20 | 2011-11-10 | Rhodia Operations | Cerium and/or terbium phosphate optionally with lanthanum, phosphor resulting from said phosphate and methods for preparing same |
US20110272635A1 (en) * | 2008-11-20 | 2011-11-10 | Rhodia Operations | Cerium and/or terbium phosphate, optionally with lanthanum, phosphor resulting from said phosphate and methods for preparing same |
US20110272633A1 (en) * | 2008-11-20 | 2011-11-10 | Rhodia Operations | Cerium and/or terbium phosphate optionally with lanthanum, phosphor resulting from said phosphate and methods for preparing same |
US20120049117A1 (en) * | 2009-03-24 | 2012-03-01 | Buissette Valerie | Composition containing a core/shell cerium and/or terbium phosphate, phosphor from said composition, and methods for preparing same |
US20120241672A1 (en) * | 2009-07-29 | 2012-09-27 | Rhodia Operations | Composition comprising a cerium and/or terbium phosphate and sodium, of core/shell type, phosphor resulting from this composition and methods for preparing same |
US9796924B2 (en) | 2011-08-31 | 2017-10-24 | Rhodia Operations | Phosphor based on a lanthanum cerium terbium phosphate with stabilized brightness, preparation process and use in a luminescent device |
-
1981
- 1981-02-12 JP JP1807881A patent/JPS57133182A/en active Pending
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5920378A (en) * | 1982-07-26 | 1984-02-02 | Mitsubishi Electric Corp | Fluophor and its use in low-pressure mercury vapor luminescent lamp |
JPH0119720B2 (en) * | 1982-07-26 | 1989-04-12 | Mitsubishi Electric Corp | |
US5091110A (en) * | 1990-05-14 | 1992-02-25 | Gte Products Corporation | Method of making lanthanum cerium terbium phosphate phosphor |
US5106532A (en) * | 1990-05-14 | 1992-04-21 | Gte Products Corporation | Method of making lanthanum cerium terbium phosphate phosphor |
US5116532A (en) * | 1990-05-14 | 1992-05-26 | Gte Products Corporation | Method of making lanthanum cerium terbium phosphate phosphor |
US5132042A (en) * | 1990-05-14 | 1992-07-21 | Gte Products Corporation | Method of making lanthanum cerium terbium phosphate phosphor with improved brightness |
US5562889A (en) * | 1991-02-04 | 1996-10-08 | Rhone-Poulenc Chimie | Cerium/lanthanum/terbium mixed phosphates |
JPH05254812A (en) * | 1991-07-19 | 1993-10-05 | Rhone Poulenc Chim | Cerium/lanthanum/terbium phosphate, production of the phosphate from insoluble rare earth salts |
US5314641A (en) * | 1991-07-19 | 1994-05-24 | Rhone-Poulenc Chimie | Production of crystallites of cerium/lanthanum/terbium phosphates from insoluble rare earth salts |
JP2517515B2 (en) * | 1991-07-19 | 1996-07-24 | ローヌ−プーラン・シミ | Cerium-lanthanum-terbium phosphate and a method for producing the phosphate from an insoluble rare earth element salt |
FR2679242A1 (en) * | 1991-07-19 | 1993-01-22 | Rhone Poulenc Chimie | MIXED PHOSPHATE OF LANTHANE, TERBIUM AND CERIUM, PROCESS FOR THE PRODUCTION THEREOF FROM INSOLUBLE SALTS FROM RARE EARTHS |
US5580490A (en) * | 1991-07-19 | 1996-12-03 | Rhone-Poulenc Chimie | Crystallites of cerium/lanthanum/terbium phosphates from insoluble rare earth salts |
US20110272633A1 (en) * | 2008-11-20 | 2011-11-10 | Rhodia Operations | Cerium and/or terbium phosphate optionally with lanthanum, phosphor resulting from said phosphate and methods for preparing same |
US20110272632A1 (en) * | 2008-11-20 | 2011-11-10 | Rhodia Operations | Cerium and/or terbium phosphate optionally with lanthanum, phosphor resulting from said phosphate and methods for preparing same |
US20110272635A1 (en) * | 2008-11-20 | 2011-11-10 | Rhodia Operations | Cerium and/or terbium phosphate, optionally with lanthanum, phosphor resulting from said phosphate and methods for preparing same |
US20110272634A1 (en) * | 2008-11-20 | 2011-11-10 | Rhodia Operations | Cerium and/or terbium phosphate optionally with lanthanum, phosphor resulting from said phosphate and methods for making same |
JP2012509378A (en) * | 2008-11-20 | 2012-04-19 | ロデイア・オペラシヨン | Cerium phosphate and / or terbium phosphate, optionally with lanthanum, phosphor resulting from said phosphate, and process for producing said phosphor |
JP2012509379A (en) * | 2008-11-20 | 2012-04-19 | ロデイア・オペラシヨン | Cerium phosphate and / or terbium phosphate, optionally with lanthanum, phosphor resulting from said phosphate, and method of making the phosphor |
JP2012509241A (en) * | 2008-11-20 | 2012-04-19 | ロデイア・オペラシヨン | Cerium phosphate and / or terbium phosphate, optionally with lanthanum, phosphor resulting from said phosphate, and method of making the phosphor |
JP2012509240A (en) * | 2008-11-20 | 2012-04-19 | ロデイア・オペラシヨン | Cerium phosphate and / or terbium optionally containing lanthanum, phosphor obtained from said phosphate, and method for preparing the same |
US20120049117A1 (en) * | 2009-03-24 | 2012-03-01 | Buissette Valerie | Composition containing a core/shell cerium and/or terbium phosphate, phosphor from said composition, and methods for preparing same |
US20120241672A1 (en) * | 2009-07-29 | 2012-09-27 | Rhodia Operations | Composition comprising a cerium and/or terbium phosphate and sodium, of core/shell type, phosphor resulting from this composition and methods for preparing same |
US9796924B2 (en) | 2011-08-31 | 2017-10-24 | Rhodia Operations | Phosphor based on a lanthanum cerium terbium phosphate with stabilized brightness, preparation process and use in a luminescent device |
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