JPS55706A - Treatment of colored fluorescent substance - Google Patents
Treatment of colored fluorescent substanceInfo
- Publication number
- JPS55706A JPS55706A JP2518178A JP2518178A JPS55706A JP S55706 A JPS55706 A JP S55706A JP 2518178 A JP2518178 A JP 2518178A JP 2518178 A JP2518178 A JP 2518178A JP S55706 A JPS55706 A JP S55706A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent substance
- formula
- europium
- colored fluorescent
- hours
- 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
- 239000000126 substance Substances 0.000 title abstract 9
- 229910052693 Europium Inorganic materials 0.000 abstract 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 4
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 abstract 4
- -1 CaO or CaS Chemical class 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 230000004913 activation Effects 0.000 abstract 2
- 239000012190 activator Substances 0.000 abstract 2
- 239000007853 buffer solution Substances 0.000 abstract 2
- 239000010410 layer Substances 0.000 abstract 2
- 229910052688 Gadolinium Inorganic materials 0.000 abstract 1
- 229910052765 Lutetium Inorganic materials 0.000 abstract 1
- ALSPKRWQCLSJLV-UHFFFAOYSA-N azanium;acetic acid;acetate Chemical compound [NH4+].CC(O)=O.CC([O-])=O ALSPKRWQCLSJLV-UHFFFAOYSA-N 0.000 abstract 1
- 159000000007 calcium salts Chemical class 0.000 abstract 1
- 229910052746 lanthanum Inorganic materials 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 159000000008 strontium salts Chemical class 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052727 yttrium Inorganic materials 0.000 abstract 1
Landscapes
- Luminescent Compositions (AREA)
Abstract
PURPOSE: To improve stability of a colored fluorescent substance, consisting of an inner layer of a europium activator acid sulfide fluorescent substance and an outer layer of a europium activation sulfide fluorescent substance, in a water slurry, by washing it with a buffer solution having a specific pH.
CONSTITUTION: A europium activator acid sulfide fluorescent substance shown by the formula II (Ln is Y, Gd, La, Lu, or Sc) is blended with a calcium salt, e.g., CaO or CaS, and a strontium salt, e.g., SrO, or SrS, and sintered at about 1000W1500°C for ten minutesW5 hours to form a red colored fluorescent substance consisting of a fluorescent substance shown by the formula II as an inner part and a europium activation sulfide fluorescent substance shown by the formula I (0≤x≤0.75) on the surface layer. The red colored fluorescent substance is washed with a buffer solution (e.g., acetic acid-ammonium acetate) in the pH of 6W8 (preferably 6.5W7.5) at 0W70°C for several minutesWtwo hours.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53025181A JPS5921353B2 (en) | 1978-03-06 | 1978-03-06 | How to process colored phosphors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53025181A JPS5921353B2 (en) | 1978-03-06 | 1978-03-06 | How to process colored phosphors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55706A true JPS55706A (en) | 1980-01-07 |
| JPS5921353B2 JPS5921353B2 (en) | 1984-05-19 |
Family
ID=12158819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53025181A Expired JPS5921353B2 (en) | 1978-03-06 | 1978-03-06 | How to process colored phosphors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921353B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60108747A (en) * | 1983-10-21 | 1985-06-14 | ローズマウント・アナリティカル・インコーポレイテッド | Gas measuring probe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5330486A (en) * | 1976-09-03 | 1978-03-22 | Hitachi Ltd | Treating method for fluorescent substance |
-
1978
- 1978-03-06 JP JP53025181A patent/JPS5921353B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5330486A (en) * | 1976-09-03 | 1978-03-22 | Hitachi Ltd | Treating method for fluorescent substance |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60108747A (en) * | 1983-10-21 | 1985-06-14 | ローズマウント・アナリティカル・インコーポレイテッド | Gas measuring probe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5921353B2 (en) | 1984-05-19 |
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