JP2006045526A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2006045526A5 JP2006045526A5 JP2005190347A JP2005190347A JP2006045526A5 JP 2006045526 A5 JP2006045526 A5 JP 2006045526A5 JP 2005190347 A JP2005190347 A JP 2005190347A JP 2005190347 A JP2005190347 A JP 2005190347A JP 2006045526 A5 JP2006045526 A5 JP 2006045526A5
- Authority
- JP
- Japan
- Prior art keywords
- light
- phosphor
- metal element
- emitting element
- group
- 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 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000012190 activator Substances 0.000 claims description 10
- 229910002601 GaN Inorganic materials 0.000 claims description 4
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 3
- 229910052691 Erbium Inorganic materials 0.000 claims description 3
- 229910052693 Europium Inorganic materials 0.000 claims description 3
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- 229910052689 Holmium Inorganic materials 0.000 claims description 3
- 229910052765 Lutetium Inorganic materials 0.000 claims description 3
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 3
- 229910052772 Samarium Inorganic materials 0.000 claims description 3
- 229910052771 Terbium Inorganic materials 0.000 claims description 3
- 229910052775 Thulium Inorganic materials 0.000 claims description 3
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052788 barium Inorganic materials 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052803 cobalt Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052706 scandium Inorganic materials 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 238000000295 emission spectrum Methods 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 1
- -1 Mn Fe Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
本発明者等は、前述の課題を解決すべく鋭意検討した結果、特定の化学組成の化合物を母体結晶とし、該母体結晶内に付活剤元素として少なくとも３価のセリウム（Ｃｅ3+）を含有し、発光スペクトルにおいて４８５ｎｍ〜５５５ｎｍの波長範囲に最大発光ピークを有する蛍光体が、前記目的を達成できることを見い出し、本発明に到達したものであって、以下を要旨とするものである。
（１） ２価及び３価の金属元素を含む複合酸化物を母体結晶とし、該母体結晶内に付活剤元素として少なくともＣｅを含有し、室温での発光スペクトルにおいて４８５ｎｍ〜５５５ｎｍの波長範囲に最大発光ピークを有することを特徴とする、下記一般式（Ｉ）で表される蛍光体。
Ｍ1 aＭ2 bＭ3 cＯd （Ｉ）
（式（Ｉ）中、Ｍ1は少なくともＣｅを含む付活剤元素、Ｍ2は２価の金属元素、Ｍ3は３
価の金属元素をそれぞれ示し、ａは０．０００１≦ａ≦０．２、ｂは０．８≦ｂ≦１．２、ｃは１．６≦ｃ≦２．４、ｄは３．２≦ｄ≦４．８の範囲の数である。）
（２） 式（Ｉ）における付活剤元素Ｍ1が、少なくともＣｅを含み、さらにＣｒ、Ｍｎ
、Ｆｅ、Ｃｏ、Ｎｉ、Ｃｕ、Ｐｒ、Ｎｄ、Ｓｍ、Ｅｕ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ、Ｔｍ、及びＹｂからなる群から選択された少なくとも１種の元素を含むものであることを特徴とする（１）に記載の蛍光体。
（３） 式（Ｉ）における２価の金属元素Ｍ2が、Ｍｇ、Ｃａ、Ｚｎ、Ｓｒ、Ｃｄ、及び
Ｂａからなる群から選択された少なくとも１種の金属元素であることを特徴とする（１）又は（２）に記載の蛍光体。
（４） 式（Ｉ）における３価の金属元素Ｍ3が、Ａｌ、Ｓｃ、Ｇａ、Ｙ、Ｉｎ、Ｌａ、
Ｇｄ、及びＬｕからなる群から選択された少なくとも１種の金属元素であることを特徴とする（１）〜（３）のいずれかに記載の蛍光体。
（５） 波長変換材料である蛍光体と、紫外光から可視光の波長範囲の光を発光する半導体発光素子とを有する発光素子であって、該蛍光体として少なくとも（１）〜（４）のいずれかに記載の蛍光体を含むことを特徴とする発光素子。
（６） （１）〜（４）のいずれかに記載の蛍光体を含有してなるエレクトロルミネッセンス発光素子。
（７） （５）又は（６）に記載の発光素子を光源として有する画像表示装置。
（８） （５）又は（６）に記載の発光素子を光源として有する照明装置。
また、特に本発明は以下を要旨とするものである。
［１］ 波長変換材料である蛍光体と、ＧａＮ系青色発光ダイオードとを有する発光素子
であって、該蛍光体として２価及び３価の金属元素を含む複合酸化物を母体結晶とし、該母体結晶内に付活剤元素として少なくともＣｅを含有し、室温での発光スペクトルにおいて４８５ｎｍ〜５５５ｎｍの波長範囲に最大発光ピークを有する、下記一般式（Ｉ）で表される蛍光体を含むことを特徴とする発光素子。
Ｍ 1 a Ｍ 2 b Ｍ 3 c Ｏ d （Ｉ）
（式（Ｉ）中、Ｍ 1 は少なくともＣｅを含む付活剤元素、Ｍ 2 は２価の金属元素、Ｍ 3 は３
価の金属元素をそれぞれ示し、ａは０．０００１≦ａ≦０．２、ｂは０．８≦ｂ≦１．２、ｃは１．６≦ｃ≦２．４、ｄは３．２≦ｄ≦４．８の範囲の数である。）
［２］ 前記ＧａＮ系青色発光ダイオードが４５０ｎｍ〜４６５ｎｍの波長範囲で発光す
ることを特徴とする［１］に記載の発光素子。
［３］ 前記一般式（Ｉ）で表される蛍光体以外に、その他の蛍光体を含むことを特徴と
する［１］または［２］に記載の発光素子。
［４］ 前記その他の蛍光体が赤色蛍光体であることを特徴とする［３］に記載の発光素
子。
［５］ 前記一般式（Ｉ）において、付活剤元素Ｍ 1 が、少なくともＣｅを含み、さらにＣｒ、Ｍｎ、Ｆｅ、Ｃｏ、Ｎｉ、Ｃｕ、Ｐｒ、Ｎｄ、Ｓｍ、Ｅｕ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ、Ｔｍ、及びＹｂからなる群から選択された少なくとも１種の元素を含むものであり、２価の金属元素Ｍ 2 が、Ｍｇ、Ｃａ、Ｚｎ、Ｓｒ、Ｃｄ、及びＢａからなる群から選択され
た少なくとも１種の金属元素であり、３価の金属元素Ｍ 3 が、Ａｌ、Ｓｃ、Ｇａ、Ｙ、Ｉ
ｎ、Ｌａ、Ｇｄ、及びＬｕからなる群から選択された少なくとも１種の金属元素であることを特徴とする［１］〜［４］のいずれかに記載の発光素子。
［６］ ［１］〜［５］のいずれかに記載の発光素子を光源として有する画像表示装置。 ［７］ ［１］〜［５］のいずれかに記載の発光素子を光源として有する照明装置。
As a result of intensive studies to solve the above-mentioned problems, the present inventors made a compound having a specific chemical composition a base crystal, and at least trivalent cerium (Ce 3+ ) as an activator element in the base crystal. It has been found that a phosphor containing and having a maximum emission peak in the wavelength range of 485 nm to 555 nm in the emission spectrum can achieve the above object, and has reached the present invention.
(1) A composite oxide containing a divalent and trivalent metal element is used as a base crystal, and at least Ce is included as an activator element in the base crystal, and the emission spectrum at room temperature has a wavelength range of 485 nm to 555 nm. A phosphor represented by the following general formula (I), which has a maximum emission peak.
M 1 a M 2 b M 3 c O d (I)
(In the formula (I), M 1 is an activator element containing at least Ce, M 2 is a divalent metal element, M 3 is 3
A is 0.0001 ≦ a ≦ 0.2, b is 0.8 ≦ b ≦ 1.2, c is 1.6 ≦ c ≦ 2.4, and d is 3.2 ≦. The number is in the range of d ≦ 4.8. )
(2) The activator element M 1 in the formula (I) contains at least Ce, and further Cr, Mn
Fe, Co, Ni, Cu, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and at least one element selected from the group consisting of Yb (characterized in that The phosphor according to 1).
(3) The divalent metal element M 2 in the formula (I) is at least one metal element selected from the group consisting of Mg, Ca, Zn, Sr, Cd, and Ba ( The phosphor according to 1) or (2).
(4) The trivalent metal element M 3 in the formula (I) is Al, Sc, Ga, Y, In, La,
The phosphor according to any one of (1) to (3), wherein the phosphor is at least one metal element selected from the group consisting of Gd and Lu.
(5) A light-emitting element having a phosphor that is a wavelength conversion material and a semiconductor light-emitting element that emits light in a wavelength range from ultraviolet light to visible light, and at least (1) to (4) as the phosphor. A light emitting device comprising the phosphor according to any one of the above.
(6) An electroluminescence light-emitting device comprising the phosphor according to any one of (1) to (4).
(7) An image display device having the light emitting element according to (5) or (6) as a light source.
(8) A lighting device having the light emitting element according to (5) or (6) as a light source.
In particular, the present invention has the following gist.
[1] A light emitting device having a phosphor as a wavelength converting material and a GaN blue light emitting diode
A composite oxide containing a divalent and trivalent metal element as the phosphor is used as a base crystal, and at least Ce is included as an activator element in the base crystal, and an emission spectrum at room temperature is 485 nm to A light emitting element comprising a phosphor represented by the following general formula (I) having a maximum emission peak in a wavelength range of 555 nm.
M 1 a M 2 b M 3 c O d (I)
(In the formula (I), M 1 is an activator element containing at least Ce, M 2 is a divalent metal element, M 3 is 3
A is 0.0001 ≦ a ≦ 0.2, b is 0.8 ≦ b ≦ 1.2, c is 1.6 ≦ c ≦ 2.4, and d is 3.2 ≦. The number is in the range of d ≦ 4.8. )
[2] The GaN-based blue light emitting diode emits light in a wavelength range of 450 nm to 465 nm.
The light-emitting element according to [1], wherein
[3] A phosphor other than the phosphor represented by the general formula (I) is included.
The light emitting device according to [1] or [2].
[4] The light emitting device according to [3], wherein the other phosphor is a red phosphor.
Child.
[5] In the general formula (I), the activator element M 1 contains at least Ce, and further includes Cr, Mn, Fe, Co, Ni, Cu, Pr, Nd, Sm, Eu, Tb, Dy, and Ho. And at least one element selected from the group consisting of Er, Tm, and Yb, and the divalent metal element M 2 is selected from the group consisting of Mg, Ca, Zn, Sr, Cd, and Ba. Selected
In addition, at least one kind of metal element, the trivalent metal element M 3 is Al, Sc, Ga, Y, I
The light-emitting element according to any one of [1] to [4], wherein the light-emitting element is at least one metal element selected from the group consisting of n, La, Gd, and Lu.
[6] An image display device having the light emitting element according to any one of [1] to [5] as a light source. [7] An illumination device having the light emitting element according to any one of [1] to [5] as a light source.
Claims (7)
該蛍光体として
２価及び３価の金属元素を含む複合酸化物を母体結晶とし、該母体結晶内に付活剤元素として少なくともＣｅを含有し、室温での発光スペクトルにおいて４８５ｎｍ〜５５５ｎｍの波長範囲に最大発光ピークを有する、下記一般式（Ｉ）で表される蛍光体を含む
ことを特徴とする発光素子。
Ｍ 1 a Ｍ 2 b Ｍ 3 c Ｏ d （Ｉ）
（式（Ｉ）中、Ｍ 1 は少なくともＣｅを含む付活剤元素、Ｍ 2 は２価の金属元素、Ｍ 3 は３ 価の金属元素をそれぞれ示し、ａは０．０００１≦ａ≦０．２、ｂは０．８≦ｂ≦１．２、ｃは１．６≦ｃ≦２．４、ｄは３．２≦ｄ≦４．８の範囲の数である。） A light-emitting element having a phosphor as a wavelength conversion material and a GaN blue light-emitting diode ,
As the phosphor
A composite oxide containing a divalent and trivalent metal element is used as a base crystal, and at least Ce is included as an activator element in the base crystal. And a phosphor represented by the following general formula (I) .
M 1 a M 2 b M 3 c O d (I)
(In formula (I), M 1 represents an activator element containing at least Ce, M 2 represents a divalent metal element, M 3 represents a trivalent metal element, and a represents 0.0001 ≦ a ≦ 0. 2 and b are numbers in the range of 0.8 ≦ b ≦ 1.2, c is 1.6 ≦ c ≦ 2.4, and d is a number in the range of 3.2 ≦ d ≦ 4.8.
ことを特徴とする請求項１に記載の発光素子。The light-emitting element according to claim 1.
ことを特徴とする請求項１または請求項２に記載の発光素子。The light-emitting element according to claim 1, wherein the light-emitting element is provided.
ことを特徴とする請求項３に記載の発光素子。The light-emitting element according to claim 3.
付活剤元素Ｍ1が、少なくともＣｅを含み、さらにＣｒ、Ｍｎ、Ｆｅ、Ｃｏ、Ｎｉ、Ｃｕ
、Ｐｒ、Ｎｄ、Ｓｍ、Ｅｕ、Ｔｂ、Ｄｙ、Ｈｏ、Ｅｒ、Ｔｍ、及びＹｂからなる群から選択された少なくとも１種の元素を含むものであり、
２価の金属元素Ｍ 2 が、Ｍｇ、Ｃａ、Ｚｎ、Ｓｒ、Ｃｄ、及びＢａからなる群から選択さ
れた少なくとも１種の金属元素であり、
３価の金属元素Ｍ 3 が、Ａｌ、Ｓｃ、Ｇａ、Ｙ、Ｉｎ、Ｌａ、Ｇｄ、及びＬｕからなる群
から選択された少なくとも１種の金属元素である
ことを特徴とする請求項１〜４のいずれか一項に記載の発光素子。 And have I said to the general formula (I),
The activator element M 1 contains at least Ce, and further Cr, Mn, Fe, Co, Ni, Cu
State, and are intended to include Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and at least one element selected from the group consisting of Yb,
The divalent metal element M 2 is selected from the group consisting of Mg, Ca, Zn, Sr, Cd, and Ba.
At least one kind of metal element,
The group in which the trivalent metal element M 3 is made of Al, Sc, Ga, Y, In, La, Gd, and Lu.
The light emitting device according to any one of claims 1 to 4, wherein the light emitting device is at least one metal element selected from the group consisting of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005190347A JP4148245B2 (en) | 2004-06-30 | 2005-06-29 | Phosphor, light-emitting element using the same, image display device, and illumination device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004194508 | 2004-06-30 | ||
| JP2005190347A JP4148245B2 (en) | 2004-06-30 | 2005-06-29 | Phosphor, light-emitting element using the same, image display device, and illumination device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007226539A Division JP4148298B2 (en) | 2004-06-30 | 2007-08-31 | Phosphor, light-emitting element using the same, image display device, and illumination device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2006045526A JP2006045526A (en) | 2006-02-16 |
| JP2006045526A5 true JP2006045526A5 (en) | 2008-03-13 |
| JP4148245B2 JP4148245B2 (en) | 2008-09-10 |
Family
ID=36024481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005190347A Active JP4148245B2 (en) | 2004-06-30 | 2005-06-29 | Phosphor, light-emitting element using the same, image display device, and illumination device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4148245B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070048661A (en) | 2004-06-30 | 2007-05-09 | 미쓰비시 가가꾸 가부시키가이샤 | Phosphor, light-emitting device using same, image display and illuminating device |
| WO2008032812A1 (en) | 2006-09-15 | 2008-03-20 | Mitsubishi Chemical Corporation | Phosphor, method for producing the same, phosphor-containing composition, light-emitting device, image display and illuminating device |
| US8415870B2 (en) | 2008-08-28 | 2013-04-09 | Panasonic Corporation | Semiconductor light emitting device and backlight source, backlight source system, display device and electronic device using the same |
| JP5614675B2 (en) * | 2010-02-16 | 2014-10-29 | 独立行政法人物質・材料研究機構 | Method for manufacturing wavelength conversion member |
| TWI418611B (en) | 2010-11-30 | 2013-12-11 | Panasonic Corp | Phosphor and light emitting device |
| CN102956802B (en) * | 2011-08-18 | 2015-06-17 | 松下电器产业株式会社 | Illumination device |
-
2005
- 2005-06-29 JP JP2005190347A patent/JP4148245B2/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI615995B (en) | Illuminating device | |
| JP4524468B2 (en) | Phosphor, method for producing the same, light source using the phosphor, and LED | |
| JP4799549B2 (en) | White light emitting diode | |
| TWI384292B (en) | Light emitting device | |
| JP4794235B2 (en) | Light emitting device | |
| TW200801158A (en) | Complex oxynitride phosphor, light-emitting device using the same, image display, illuminating device, phosphor-containing composition and complex oxynitride | |
| TW200712174A (en) | Fluorescent material and method of manufacturing the same, fluorescent material containing composition, light emitting device and use thereof | |
| JP2007223864A5 (en) | Oxynitride phosphor, method for producing oxynitride phosphor, semiconductor light emitting device, light emitting device, light source, lighting device, and image display device | |
| TW200644286A (en) | White light-emitting lamp, backlight using the same, display and illuminating device | |
| TW201226527A (en) | Fluorescent substance and light-emitting device employing the same | |
| JP2002363554A (en) | Acid nitride phosphor activated with rare earth element | |
| JP2004189997A5 (en) | ||
| TW200730605A (en) | Fluorescence material and manufacture thereof and luminaire | |
| TWI456307B (en) | Liquid crystal display device | |
| JP2007039517A5 (en) | ||
| JP2006045526A5 (en) | ||
| JP2010527126A5 (en) | ||
| EP1911826A4 (en) | Phosphor and light-emitting device | |
| TW200831641A (en) | Phosphorescent phosphor, fluorescent lamp, phosphorescent display and phosphorescent mold goods | |
| JP2008081631A (en) | Light-emitting device | |
| JP2006176546A (en) | Phosphor and light source using phosphor | |
| JP2007077365A (en) | Long afterglow phosphor | |
| JP2020500958A5 (en) | ||
| JP2015529707A5 (en) | ||
| JP2019131779A (en) | Light storing material |