JPS5655480A - Phosphor and production thereof - Google Patents
Phosphor and production thereofInfo
- Publication number
- JPS5655480A JPS5655480A JP13185679A JP13185679A JPS5655480A JP S5655480 A JPS5655480 A JP S5655480A JP 13185679 A JP13185679 A JP 13185679A JP 13185679 A JP13185679 A JP 13185679A JP S5655480 A JPS5655480 A JP S5655480A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- oxides
- calcined
- anhydride
- heated
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title abstract 3
- 229910052684 Cerium Inorganic materials 0.000 abstract 2
- 229910052688 Gadolinium Inorganic materials 0.000 abstract 2
- 229910052771 Terbium Inorganic materials 0.000 abstract 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 2
- 239000004327 boric acid Substances 0.000 abstract 2
- 229910052727 yttrium Inorganic materials 0.000 abstract 2
- 150000008064 anhydrides Chemical class 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 230000006866 deterioration Effects 0.000 abstract 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Landscapes
- Luminescent Compositions (AREA)
Abstract
PURPOSE: To obtain a phosphor which is used as a green light-emitting component for a low-pressure mercury-vapor lamp and in which the extent of deterioration is small even when the lamp is used over a long period of time, by a method wherein oxides of Gd, Y, Ce and Tb and boric acid (or anhydride) are calcined in air, and then heated in a reducing atmosphere.
CONSTITUTION: Oxides of Gd, Y, Ce and Tb or cpd. which upon calcination will yield the oxides, and boric acid or anhydride thereof, are calcined in air, and then heated at a temp. of 900W1,500°C in a weakly reducing atmosphere to obtain a phosphor of the formula: (Gd1-a-b-cYaCebTbc)2O3.3B2O3 (wherein a is 0.05W 0.4; b is 0.05W0.6; c is 0.05W0.5; a+b+c<1).
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54131856A JPS5915158B2 (en) | 1979-10-15 | 1979-10-15 | Fluorescent material and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54131856A JPS5915158B2 (en) | 1979-10-15 | 1979-10-15 | Fluorescent material and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5655480A true JPS5655480A (en) | 1981-05-16 |
| JPS5915158B2 JPS5915158B2 (en) | 1984-04-07 |
Family
ID=15067715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54131856A Expired JPS5915158B2 (en) | 1979-10-15 | 1979-10-15 | Fluorescent material and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5915158B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52133091A (en) * | 1976-04-30 | 1977-11-08 | Dainippon Toryo Co Ltd | Gas discharge luminous element |
| JPS5333986A (en) * | 1976-07-13 | 1978-03-30 | Philips Nv | Luminescent screens |
-
1979
- 1979-10-15 JP JP54131856A patent/JPS5915158B2/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52133091A (en) * | 1976-04-30 | 1977-11-08 | Dainippon Toryo Co Ltd | Gas discharge luminous element |
| JPS5333986A (en) * | 1976-07-13 | 1978-03-30 | Philips Nv | Luminescent screens |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5915158B2 (en) | 1984-04-07 |
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