TWI443179B - A novel aluminate phosphor - Google Patents
A novel aluminate phosphor Download PDFInfo
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- TWI443179B TWI443179B TW101104670A TW101104670A TWI443179B TW I443179 B TWI443179 B TW I443179B TW 101104670 A TW101104670 A TW 101104670A TW 101104670 A TW101104670 A TW 101104670A TW I443179 B TWI443179 B TW I443179B
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims description 12
- 150000004645 aluminates Chemical class 0.000 title 1
- 239000000843 powder Substances 0.000 claims description 28
- 108010043121 Green Fluorescent Proteins Proteins 0.000 claims description 18
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 8
- 238000005245 sintering Methods 0.000 claims description 7
- 229910052747 lanthanoid Inorganic materials 0.000 claims description 6
- 150000002602 lanthanoids Chemical class 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 229910052684 Cerium Inorganic materials 0.000 claims description 2
- 229910052692 Dysprosium Inorganic materials 0.000 claims description 2
- 229910052691 Erbium Inorganic materials 0.000 claims description 2
- 229910052779 Neodymium Inorganic materials 0.000 claims description 2
- 229910052772 Samarium Inorganic materials 0.000 claims description 2
- 229910052771 Terbium Inorganic materials 0.000 claims description 2
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 2
- 229910052693 Europium Inorganic materials 0.000 claims 1
- 229910052777 Praseodymium Inorganic materials 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- -1 cerium ion Chemical group 0.000 description 6
- 230000005284 excitation Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910003668 SrAl Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910019990 cerium-doped yttrium aluminum garnet Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 238000000695 excitation spectrum Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7774—Aluminates
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7767—Chalcogenides
- C09K11/7768—Chalcogenides with alkaline earth metals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
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- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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Description
本發明係揭示一種綠色螢光粉體，尤指一種通式為(Gd,Sr)3-yAl2O7：Ry，0<y≦0.3；其中，R為鑭系金屬類之元素，且(Gd,Sr)3-y為GdzSr3-y-z，0<z<3-y之表示式之綠色螢光粉體。 The present invention discloses a green fluorescent powder, especially a compound of the formula (Gd, Sr) 3-y Al 2 O 7 : R y , 0 < y ≦ 0.3; wherein R is an element of a lanthanide metal, Further, (Gd, Sr) 3-y is a green fluorescent powder of the formula Gd z Sr 3-yz , 0 < z < 3-y.
按，隨著節能減碳之環保意識高漲，世界各國日漸重視白光發光二極體(Light emitting diode；LED)的發展，並以之逐漸取代傳統的照明設備。白光發光二極體具許多的優點，例如：體積小、耗電量低(為傳統白幟燈泡之十分之一)壽命長、發光效率高、反應速度快等優點，目前已被應用於顯示器、號誌燈、照明等，由於全球能源短缺及節能減碳倍受重視，發光二極體可有效解決傳統照明所無法克服之問題，在未來將成為最重要的照明設備之一。 According to the high environmental awareness of energy saving and carbon reduction, countries around the world have paid more and more attention to the development of white light emitting diodes (LEDs), and gradually replaced traditional lighting equipment. The white light emitting diode has many advantages, such as small size, low power consumption (one tenth of a conventional white light bulb), long life, high luminous efficiency, fast response, etc., and has been applied to displays. As for the global energy shortage and energy conservation and carbon reduction, the LEDs can effectively solve the problems that traditional lighting cannot overcome, and will become one of the most important lighting devices in the future.
日本日亞化學公司於1996年提出藉由藍光LED激發鈰摻雜之釔鋁石榴石(Cerium-doped yttrium aluminum garnet；YAG：Ce)螢光粉產生黃色螢光，此黃色螢光粉和藍光混合可以產生白光(專利號U.S.5,998,925)，然而此種白光發光二極體為冷白光，然而其放光範圍缺乏紅光部份，使其演色性較低，因此目前白光發光二極體除使用藍色二極體搭配黃色螢光粉外，亦有藍光二極體搭配綠色、紅色螢光 粉以及紫外光發光二極體(Ultraviolet light emitting diode,UV-LED)搭配藍綠紅三色螢光粉等混成白光方式，其中UV-LED搭配三色螢光粉具有較佳之演色性，故開發適合紫外光激發之藍色、綠色與紅色螢光粉為目前重要之研究課題。 Nichia Chemical Co., Ltd. proposed in 1996 to generate yellow fluorescence by using a blue LED to excite cerium-doped yttrium aluminum garnet (YAG:Ce) phosphor powder. This yellow phosphor is mixed with blue light. It can produce white light (Patent No. US5,998,925). However, this white light emitting diode is cool white light, but its light-emitting range lacks red light, which makes its color rendering lower. Therefore, the current white light emitting diode is not only blue. Color diode with yellow phosphor powder, blue diode with green, red fluorescent Ultraviolet light emitting diode (UV-LED) with blue, green and red three-color fluorescent powder mixed into white light mode, in which UV-LED with three-color fluorescent powder has better color rendering, so development Blue, green and red fluorescent powders suitable for ultraviolet light excitation are currently important research topics.
1975年Fava與Flem於Materials Research Bulletin(vol.10,p.75)期刊發表Gd2SrAl2O7之結構，其屬於一種Sr3Ti2O7的結構類型，空間群為I4/mmm，其晶體結構以[AlO4]四面體構成，係屬於一層狀結構，而Zvereva等人於1994年於Russian Journal of General Chemistry(vol.74,p.655)揭露Gd3+與Sr2+於晶體中具相同之格位，其同時佔有兩個不同晶格位置，配位數分別為12配位和9配位，而配位原子皆為氧原子。此種晶體化合物雖易於製成，卻無激發綠光之特性。 In 1975, Fava and Flem published the structure of Gd 2 SrAl 2 O 7 in the journal Materials Research Bulletin (vol. 10, p. 75), which belongs to a structural type of Sr 3 Ti 2 O 7 with a space group of I4/mmm. The crystal structure is composed of [AlO 4 ] tetrahedron and belongs to a layered structure, and Zvereva et al., 1994, published in the Russian Journal of General Chemistry (vol. 74, p. 655) Gd 3 + and Sr 2 + in crystals. It has the same lattice position, and it occupies two different lattice positions at the same time. The coordination number is 12 coordination and 9 coordination, respectively, and the coordination atoms are all oxygen atoms. Although such a crystalline compound is easy to produce, it does not have the property of exciting green light.
本發明人基於多年研發螢光粉之專業以及多次實驗之經驗，提出綠色螢光粉體(Gd,Sr)3-yAl2O7：Ry，其中若R為銪離子時，此化合物以紫外光激發，將會放出綠色螢光。 The inventors have proposed a green fluorescent powder (Gd, Sr) 3-y Al 2 O 7 :R y based on years of research and development of fluorescent powder and many experiments, wherein if R is a cerium ion, the compound Excited by ultraviolet light, green fluorescent light will be emitted.
本發明之一目的，旨在提供一種以紫外光激發，而放出綠色螢光之綠色螢光體。 It is an object of the present invention to provide a green phosphor which is excited by ultraviolet light to emit green fluorescence.
為達此一目的，本發明之綠色螢光粉體，係在一燒結溫度T之一合成反應環境下所製成，該綠色 螢光粉體其通式係為(Gd,Sr)3-yAl2O7：Ry，0<y≦0.3；其中，R為鑭系金屬類之元素，且(Gd,Sr)3-y為GdzSr3-y-z，0<z<3-y之表示式。該綠色螢光粉體係可被波長為300~450nm之光激發。且該綠色螢光粉體之放射波長為400~700nm。其中，該燒結溫度T為1500~1700℃。且該合成反應環境係包含H2及N2。 In order to achieve the above object, the green phosphor powder of the present invention is prepared in a synthesis reaction environment of a sintering temperature T, and the green fluorescent powder has a general formula of (Gd, Sr) 3-y. Al 2 O 7 :R y , 0<y≦0.3; wherein R is an element of a lanthanide metal, and (Gd,Sr) 3-y is Gd z Sr 3-yz , 0<z<3-y Representation. The green phosphor system can be excited by light having a wavelength of 300 to 450 nm. And the emission wavelength of the green fluorescent powder is 400 to 700 nm. The sintering temperature T is 1500 to 1700 °C. And the synthetic reaction environment contains H 2 and N 2 .
於一實施例中，該燒結溫度T為1600℃。且該合成反應環境之H2與N2比例係為H2 10%、N2 90%。 In one embodiment, the sintering temperature T is 1600 °C. And the ratio of H 2 to N 2 in the synthesis reaction environment is H 2 10%, N 2 90%.
透過上述設計，本發明係提供一種新穎鋁酸鹽類化合物，有效吸收紫外光波段之光波，並激發放射綠光波段之光波。 Through the above design, the present invention provides a novel aluminate compound which effectively absorbs light waves in the ultraviolet light band and excites light waves in the green light band.
為使 貴審查委員能清楚了解本發明之內容，謹以下列說明搭配圖式，敬請參閱。 In order for your review board to have a clear understanding of the contents of the present invention, please refer to the following description for matching drawings.
本發明之綠色螢光粉體之通式係為(Gd,Sr)3-yAl2O7：Ry，0<y≦0.3；其中，R為鑭系金屬類之元素，選自Ce,Eu,Pr,Nd,Sm,Tb,Er,Yb,Dy其中之一或兩者以上之混合元素，例如，當鑭系金屬元素為兩者以上之混合元素時，可表示為R1y1R2y2R3y3…，其中0<y1≦0.3、0<y2≦0.3、0<y3≦0.3、…。而(Gd,Sr)3-y為GdzSr3-y-z，0<z<3-y之表示式。而該綠色螢光粉體在製作時，係在一燒結溫度T為1500~1700℃，以及包含H2及 N2之一合成反應環境下熱固合成。 The green fluorescent powder of the present invention has the formula: (Gd, Sr) 3-y Al 2 O 7 : R y , 0 < y ≦ 0.3; wherein R is an element of a lanthanide metal selected from the group consisting of Ce, A mixed element of one or more of Eu, Pr, Nd, Sm, Tb, Er, Yb, Dy, for example, when the lanthanide metal element is a mixed element of two or more, it can be expressed as R1 y1 R2 y2 R3 Y3 ..., where 0 < y1 ≦ 0.3, 0 < y2 ≦ 0.3, 0 < y3 ≦ 0.3, .... And (Gd,Sr) 3-y is an expression of Gd z Sr 3-yz , 0 < z < 3-y. The green phosphor powder is produced by thermosetting at a sintering temperature T of 1500 to 1700 ° C and a reaction reaction environment containing one of H 2 and N 2 .
於一較佳實施例中，本發明鋁酸鹽類化合物之配方為(Gd,Sr)3-yAl2O7：Ry，其中R為鑭系元素Eu銪離子，且y=0.03。本實施例製備使用的起始物為Gd2O3、SrCO3、CaCO3、BaCO3、Al2O3與Eu2O3，依其比例取適量於研缽中研磨均勻混合後，置於管狀爐在1600℃、氫氣(10%)/氮氣(90%)還原氣氛下燒結10小時，即可得產物，其製作過程簡單，適於大量生產。 In a preferred embodiment, the aluminate compound of the present invention is formulated as (Gd,Sr) 3-y Al 2 O 7 :R y wherein R is a lanthanide Eu 铕 ion and y=0.03. The starting materials used in the preparation of this example are Gd 2 O 3 , SrCO 3 , CaCO 3 , BaCO 3 , Al 2 O 3 and Eu 2 O 3 , and the appropriate amounts thereof are uniformly mixed in a mortar and then placed in a mortar. The tubular furnace is sintered at 1600 ° C under a reducing atmosphere of hydrogen (10%) / nitrogen (90%) for 10 hours to obtain a product, which is simple in preparation and suitable for mass production.
請參閱第1圖，係為本發明較佳實施例Gd2Sr0.97Al2O7：Eu0.03之X光粉末繞射圖譜。如圖中所示，本發明較佳實施例之(Gd,Sr)3-yAl2O7：Ry(y=0.03)，樣品以X光粉末繞射圖譜鑑定其晶相純度，其鑑定結果與已知結構之標準Gd2SrAl2O7圖譜比對相符合(JCPDS file NO：00-076-0075)，可證實所合成之樣品為純相。 Referring to Figure 1, there is shown a diffraction pattern of an X-ray powder of Gd 2 Sr 0.97 Al 2 O 7 :Eu 0.03 in accordance with a preferred embodiment of the present invention. As shown in the figure, in the preferred embodiment of the present invention (Gd,Sr) 3-y Al 2 O 7 :R y (y=0.03), the sample is identified by X-ray powder diffraction pattern, and its crystal phase purity is identified. The results were in agreement with the standard Gd 2 SrAl 2 O 7 pattern of the known structure (JCPDS file NO: 00-076-0075), and it was confirmed that the synthesized sample was a pure phase.
請參閱第2圖，係為本發明較佳實施例Gd2Sr0.97Al2O7：Eu0.03之激發光譜圖。圖中之較佳實施例樣品係固定放射波長為513nm之光波，故可得知本創作較佳實施例適合以300nm至450nm之光源予以激發，符合紫外光發光二極體之激發波長範圍。 Please refer to FIG. 2, which is an excitation spectrum diagram of Gd 2 Sr 0.97 Al 2 O 7 :Eu 0.03 according to a preferred embodiment of the present invention. The preferred embodiment of the sample is a fixed wavelength of light having a wavelength of 513 nm, so that the preferred embodiment of the present invention is suitable for excitation from a source of 300 nm to 450 nm, in accordance with the excitation wavelength range of the ultraviolet light emitting diode.
請參閱第3圖，係為本發明較佳實施例Gd2Sr0.97Al2O7：Eu0.03之放射光譜圖。如圖中所示，本 發明鋁酸鹽類化合物之綠色螢光體於激發波長365nm下，可發現放射光譜圖中於513nm具一波峰，故乃綠色發光之螢光粉，且該綠色螢光粉體之放射波長範圍為400~700nm。 Please refer to Fig. 3, which is a radiation spectrum diagram of Gd 2 Sr 0.97 Al 2 O 7 :Eu 0.03 , which is a preferred embodiment of the present invention. As shown in the figure, the green phosphor of the aluminate compound of the present invention has a peak at 513 nm in the emission spectrum at an excitation wavelength of 365 nm, so that it is a green-emitting phosphor, and the green fluorescent light The emission wavelength of the powder ranges from 400 to 700 nm.
請參閱第4圖，係為本發明較佳實施例Gd2Sr0.97Al2O7：Eu0.03之色度座標圖。本發明較佳實施例(Gd,Sr)3-yAl2O7：Ry(y=0.03)於激發波長365nm下之放射光譜數據，以國際照明委員會制定之色度座標圖進行公式換算，得其放光之色度座標為(0.2466,0.4476)並標示於色度座標圖上，如第4圖所示，本發明較佳實施例之放光係屬綠光範圍。 Please refer to FIG. 4, which is a chromaticity coordinate diagram of Gd 2 Sr 0.97 Al 2 O 7 :Eu 0.03 according to a preferred embodiment of the present invention. Preferred Embodiments of the Invention (Gd, Sr) 3-y Al 2 O 7 :R y (y=0.03) The emission spectrum data at an excitation wavelength of 365 nm is converted by a formula of a chromaticity coordinate map developed by the International Commission on Illumination. The chromaticity coordinates of the light-emitting luminosity are (0.2466, 0.4476) and are indicated on the chromaticity coordinate map. As shown in Fig. 4, the light-emitting system of the preferred embodiment of the present invention is in the green light range.
綜上所述，本發明係提供一種綠光螢光體，係為新穎之鋁酸鹽類化合物，有效吸收300~450nm波長之光波，並激發放射400~700nm之光波。 In summary, the present invention provides a green phosphor which is a novel aluminate compound which effectively absorbs light waves having a wavelength of 300 to 450 nm and excites light waves of 400 to 700 nm.
以上所述者，僅為本發明之較佳實施例而已，並非用以限定本發明實施之範圍，此等熟習此技術所作出等效或輕易的變化者，在不脫離本發明之精神與範圍下所作之均等變化與修飾，皆應涵蓋於本發明之專利範圍內。 The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and equivalents or modifications may be made without departing from the spirit and scope of the present invention. Equivalent changes and modifications made below are intended to be included within the scope of the invention.
第1圖，為本發明較佳實施例Gd2Sr0.97Al2O7：Eu0.03之X光粉末繞射圖譜。 Figure 1 is a diffraction diagram of an X-ray powder of Gd 2 Sr 0.97 Al 2 O 7 :Eu 0.03 in accordance with a preferred embodiment of the present invention.
第2圖，為本發明較佳實施例Gd2Sr0.97Al2O7：Eu0.03之激發光譜圖。 Fig. 2 is an excitation spectrum diagram of Gd 2 Sr 0.97 Al 2 O 7 :Eu 0.03 in accordance with a preferred embodiment of the present invention.
第3圖，為本發明較佳實施例Gd2Sr0.97Al2O7：Eu0.03之放射光譜圖。 Figure 3 is a radiation spectrum diagram of Gd 2 Sr 0.97 Al 2 O 7 :Eu 0.03 in accordance with a preferred embodiment of the present invention.
第4圖，為本發明較佳實施例Gd2Sr0.97Al2O7：Eu0.03之色度座標圖。 Figure 4 is a chromaticity coordinate diagram of Gd 2 Sr 0.97 Al 2 O 7 :Eu 0.03 in accordance with a preferred embodiment of the present invention.
Claims (8)
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| TW101104670A TWI443179B (en) | 2012-02-14 | 2012-02-14 | A novel aluminate phosphor |
| CN2012100701337A CN103242841A (en) | 2012-02-14 | 2012-03-16 | Green phosphor |
| JP2012105240A JP2013166909A (en) | 2012-02-14 | 2012-05-02 | Green phosphor |
| KR1020120055198A KR101403755B1 (en) | 2012-02-14 | 2012-05-24 | Green Phosphor |
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| US6267911B1 (en) | 1997-11-07 | 2001-07-31 | University Of Georgia Research Foundation, Inc. | Phosphors with long-persistent green phosphorescence |
| JP4272973B2 (en) * | 2003-11-13 | 2009-06-03 | Ｎｅｃライティング株式会社 | Vacuum ultraviolet light excited green phosphor material and light emitting device using the same |
| CN1301308C (en) * | 2004-01-16 | 2007-02-21 | 北京有色金属研究总院 | High luminosity aluminate long luminous material and preparation process thereof |
| JP2009173905A (en) * | 2007-12-28 | 2009-08-06 | Mitsubishi Chemicals Corp | Phosphor, method of manufacturing phosphor, phosphor-containing composition, and light emitting device |
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