JP6715778B2 - 蛍光体、発光装置及び蛍光体の製造方法 - Google Patents
蛍光体、発光装置及び蛍光体の製造方法 Download PDFInfo
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- JP6715778B2 JP6715778B2 JP2016572108A JP2016572108A JP6715778B2 JP 6715778 B2 JP6715778 B2 JP 6715778B2 JP 2016572108 A JP2016572108 A JP 2016572108A JP 2016572108 A JP2016572108 A JP 2016572108A JP 6715778 B2 JP6715778 B2 JP 6715778B2
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims description 120
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 238000000034 method Methods 0.000 title claims description 24
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 70
- 230000005284 excitation Effects 0.000 claims description 26
- 239000000243 solution Substances 0.000 claims description 23
- 239000002245 particle Substances 0.000 claims description 21
- 238000001556 precipitation Methods 0.000 claims description 16
- 230000031700 light absorption Effects 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 238000004090 dissolution Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 229910052732 germanium Inorganic materials 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- 229910052718 tin Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910052726 zirconium Inorganic materials 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 4
- 229910052735 hafnium Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 3
- 239000011572 manganese Substances 0.000 description 32
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000843 powder Substances 0.000 description 14
- 239000013078 crystal Substances 0.000 description 13
- 238000000151 deposition Methods 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- 238000001228 spectrum Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 5
- 229920006362 Teflon® Polymers 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 239000006228 supernatant Substances 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910004283 SiO 4 Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000002189 fluorescence spectrum Methods 0.000 description 2
- QOSATHPSBFQAML-UHFFFAOYSA-N hydrogen peroxide;hydrate Chemical compound O.OO QOSATHPSBFQAML-UHFFFAOYSA-N 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052701 rubidium Inorganic materials 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000000935 solvent evaporation Methods 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910005793 GeO 2 Inorganic materials 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229920000995 Spectralon Polymers 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004993 emission spectroscopy Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Description
前記貧溶媒は水であることが好ましい。
1)溶媒蒸発方法:フッ化水素酸溶媒中に蛍光体の原料となる元素を溶解させた後、溶媒を蒸発させる方法
2)貧溶媒添加析出方法:貧溶媒を添加して蛍光体を析出させる方法
3)混合反応析出方法:蛍光体の原料となる元素を溶解させた二種以上のフッ化水素酸溶液を混合して蛍光体を反応析出させる方法
沈殿後、上澄み液を除去し、メタノールを加え、撹拌・静置し、上澄み液を除去し、更にメタノールを加えるという操作を、液が中性になるまで繰り返した。
容量3000mlのテフロン(登録商標)製のビーカーに濃度55質量%フッ化水素酸1000mlを入れ、粉末状のK2SiF6(森田化学株式会社製、純度98%以上)30gと前述のK2MnF6を5g加え、十分に撹拌して溶解した。
蒸留水全量を入れた後、更に、20分間撹拌し、その後、静置して固形分を沈殿させた。沈殿確認後、上澄み液を除去し、20質量%のフッ化水素酸及びメタノールでの洗浄を行い、濾過により固形部を分離回収し、更に乾燥処理により、残存メタノールを蒸発除去し、黄色の蛍光体粉末を得た。
実施例2〜4、比較例1〜3は、表1の原料の欄に示すK2SiF6及びK2MnF6の添加量を変えた以外は、実施例1と同じ方法で製造した蛍光体である。
比較例4の蛍光体は、表1には示さなかったが、上述の実施例とは異なる製造方法である混合反応析出方法で製造した蛍光体である。
実施例5の蛍光体は、一般式:A2MF6:Mnの蛍光体であり、元素AとしてK(カリウム)、元素MとしてGe(ゲルマニウム)、波長300nm以上350nm以下に現れる光吸収率の極小値が46.0%であり、波長400nm以上500nm以下での最大の光吸収率が79.6%で、Mn含有量が0.61質量%で、平均粒径が38.4μmの蛍光体である。これらの特性値と後述する発明の効果を表2に示す。
Claims (6)
- 一般式:A2MF6:Mn(元素Aはアルカリ金属元素であり、元素MはSi、Ge、Sn、Ti、Zr及びHfから選ばれる一種以上の四価の金属元素である。)で表される蛍光体であって、波長300nm以上350nm以下に現れる光吸収率の極小値が67%以下であり、波長400nm以上500nm以下での最大の光吸収率が65%以上で、Mn含有量が0.3質量%以上1.5質量%以下である蛍光体。
- 平均粒径が10μm以上35μm以下である請求項1記載の蛍光体。
- 請求項1又は請求項2記載の蛍光体と、発光光源とを含有する発光装置であって、前記発光光源のピーク波長が420nm以上480nm以下である発光装置。
- 蛍光体として、請求項1又は請求項2記載の蛍光体と、励起光455nmを受けた際のピーク波長が510nm以上550nm以下の緑色蛍光体を有する請求項3記載の発光装置。
- 前記緑色蛍光体がEu付活βサイアロンである請求項4記載の発光装置。
- 請求項1又は2に記載の蛍光体を製造する蛍光体の製造方法であり、原料をフッ化水素酸に溶解する溶解工程と、溶解工程後の溶液から蛍光体を析出させる析出工程、及び、不純物を除去する洗浄工程を有し、溶解工程で得られるフッ化水素酸水溶液が元素A、元素M及びMnを含有し、析出工程での析出をフッ化水素酸水溶液に水を投入する手段とした蛍光体の製造方法。
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JP (1) | JP6715778B2 (ja) |
KR (1) | KR102520635B1 (ja) |
CN (1) | CN107429159B (ja) |
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US7497973B2 (en) | 2005-02-02 | 2009-03-03 | Lumination Llc | Red line emitting phosphor materials for use in LED applications |
TWI438262B (zh) | 2008-02-07 | 2014-05-21 | Mitsubishi Chem Corp | A semiconductor light emitting device, a backlight, a color image display device, and a phosphor |
JP5682104B2 (ja) * | 2008-09-05 | 2015-03-11 | 三菱化学株式会社 | 蛍光体及びその製造方法と、その蛍光体を用いた蛍光体含有組成物及び発光装置、並びに、その発光装置を用いた画像表示装置及び照明装置 |
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WO2016121823A1 (ja) | 2016-08-04 |
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JPWO2016121823A1 (ja) | 2017-11-02 |
DE112016000492T5 (de) | 2017-11-02 |
TW201634664A (zh) | 2016-10-01 |
TWI688638B (zh) | 2020-03-21 |
US10611956B2 (en) | 2020-04-07 |
CN107429159B (zh) | 2020-06-16 |
KR102520635B1 (ko) | 2023-04-11 |
KR20170108115A (ko) | 2017-09-26 |
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