CN106995702A - 一种镓锗酸盐基深红色发光材料及其制备方法 - Google Patents
一种镓锗酸盐基深红色发光材料及其制备方法 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 title description 4
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 title description 3
- 239000003513 alkali Substances 0.000 title description 3
- 229910052733 gallium Inorganic materials 0.000 title description 3
- 239000000203 mixture Substances 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 229910052738 indium Inorganic materials 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims abstract description 4
- 229910052718 tin Inorganic materials 0.000 claims abstract description 4
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 claims description 2
- 229910001195 gallium oxide Inorganic materials 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 229910052732 germanium Inorganic materials 0.000 claims 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 238000009877 rendering Methods 0.000 description 14
- 238000000295 emission spectrum Methods 0.000 description 6
- 238000001354 calcination Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000000695 excitation spectrum Methods 0.000 description 2
- 238000001748 luminescence spectrum Methods 0.000 description 2
- 238000000634 powder X-ray diffraction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241000736199 Paeonia Species 0.000 description 1
- 235000006484 Paeonia officinalis Nutrition 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7783—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals one of which being europium
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Abstract
本发明公开了一种深红色发光材料,其组成式为:Sr2‑aMaLa1‑xGa3‑bNbGe3‑cQc(O1‑d+F2d)14:xEu,其中x为Eu的掺杂量,M为Ca,Ba中至少一种,N为Al,In中至少一种,Q为Si,Sn中至少一种,0≤x≤1,0.001≤a≤0.4,0.001≤b≤0.5,0.001≤c≤0.5,0.001≤d≤0.1。其制备方法包括以下步骤:将原料混合均匀,装入坩埚,在1000~1350℃下高温灼烧1~4小时;将烧结物破碎、研磨、洗涤、烘干,得到发光材料。本发明方法制备的红色发光材料,性能稳定,发光强度高。
Description
技术领域
本发明涉及一种发光材料及其制备方法,特别涉及一种镓锗酸盐基深红色发光材料及其制备方法。
背景技术
随着生活水平的不断提高,人们对照明光源的品质要求也越来越高,照明光源的显色性越来越受到重视。在一些特种行业及场所,对照明光源的显色性要求更加严格。例如印染业、彩色印刷业所使用的荧光灯,不仅要求一般显色指数Ra>95,而且R9~R14各特殊显色指数也要求>90。另外有一些地区对R9(饱和红色)要求其≥45。因此,提高光源的显色性,开发高显色性光源不仅具有重要的意义也有很好的市场前景。
光源的显色性取决于其发射光谱。白炽灯和日光光谱由于在380~780nm可见光范围内连续都有辐射,显色指数很高,Ra可达100。而其他光源由于缺少某些范围光谱的发射,显色指数Ra达不到100。例如现在广泛应用的三基色荧光灯中,缺少480~520nm的蓝绿光及>620nm的红光发射,而公认的继白炽灯、荧光灯之后的下一代照明光源白光LED固态照明光源也存在需要提高显色指数的问题。
研究表明:要提高光源显色性,需要增加荧光粉发射光谱中480~520nm蓝绿光及>620nm的红光。20世纪80年代以来人们开展了许多研究,已开发出多种红色发光材料,如CN200910218693.0、CN201010123462.4、CN201010550332.9、CN201310009224.4等,公开了各种不同组成的红色发光材料,在这些文件中,同时公开了各种不同的制备方法,得到的发光材料也各不相同。
发明内容
本发明的目的在于提供一种深红色发光材料及其制备方法。
本发明所采取的技术方案是:
一种深红色发光材料,其组成式为:Sr2-aMaLa1-xGa3-bNbGe3-cQc(O1-d+F2d)14:xEu,其中x为Eu的掺杂量,M为Ca,Ba中至少一种,N为Al,In中至少一种,Q为Si,Sn中至少一种,0≤x≤1,0.001≤a≤0.4,0.001≤b≤0.5,0.001≤c≤0.5,0.001≤d≤0.1。
上述深红色发光材料的制备方法,包括以下步骤:
1)将原料混合均匀,装入坩埚,在1000~1350℃下高温灼烧1~4小时;
2)将烧结物破碎、研磨、洗涤、烘干,得到发光材料。
优选的,原材料中,氧化镓和氧化锗的添加量需要过量1-5%。
本发明的深红色发光材料,可以被370~410nm近紫外光有效地激发,在570~720nm范围内有多组发射峰。用于近紫外LED,可吸收其发光谱线,其发射光谱相比于大多数Eu掺杂发光材料而言,增加了波长大于620nm的深红色光谱,提高了灯的显色指数,特别能提高R9(饱和红色)。应用于近紫外光LED上,结合其他荧光粉可得到白光LED,也可有效地提高白光LED的显色性。
本发明方法制备的红色发光材料,性能稳定,发光强度高。
附图说明
图1为实施例1的样品的X射线粉末衍射图。
图2为实施例1的样品的激发光谱。
图3为实施例1的样品的发射光谱。
具体实施方式
一种深红色发光材料,其组成式为:Sr2-aMaLa1-xGa3-bNbGe3-cQc(O1-d+F2d)14:xEu,其中x为Eu的掺杂量,M为Ca,Ba中至少一种,N为Al,In中至少一种,Q为Si,Sn中至少一种,0≤x≤1,0.001≤a≤0.4,0.001≤b≤0.5,0.001≤c≤0.5,0.001≤d≤0.1。
上述深红色发光材料的制备方法,包括以下步骤:
1)将原料混合均匀,装入坩埚,在1000~1350℃下高温灼烧1~4小时;
2)将烧结物破碎、研磨、洗涤、烘干,得到发光材料。
下面结合实施例,进一步说明本发明。
实施例1
发光材料的组成式为:Sr2EuGa3Ge3O14,
1)按发光材料的组成称取原料,混合均匀,装入坩埚,于1250℃下灼烧3小时;
2)将烧结物破碎、研磨、洗涤、烘干,得到发光材料。
实施例2
发光材料的组成式为:Sr2La0.5Eu0.5Ga3Ge3O14,
1)按发光材料的组成称取原料,混合均匀,装入坩埚,于1200℃下灼烧4小时;
2)将烧结物破碎、研磨、洗涤、烘干,得到发光材料。
实施例3
发光材料的组成式为:Sr1.7Ba0.3La0.6Eu0.4Ga2.7In0.3Ge3O14,
1)按发光材料的组成称取原料,混合均匀,装入坩埚,于1350℃下灼烧4小时;
2)将烧结物破碎、研磨、洗涤、烘干,得到发光材料。
实施例4
发光材料的组成式为:Sr2La0.6Eu0.4Ga3Ge2.7Si0.3(O0.95F0.1)14,
1)按发光材料的组成称取原料,混合均匀,装入坩埚,于1100℃下灼烧1小时;
2)将烧结物破碎、研磨、洗涤、烘干,得到发光材料。
图1为实施例1的样品的X射线粉末衍射图;图2为实施例1的样品的激发光谱;图3为实施例1的样品的发射光谱。从图中可以看出本发明的荧光粉发射范围宽,发光性能好。其他实施例的荧光粉,其性能与实施例1的较为接近,发光性能同样较为优越。
本发明的深红色发光材料,可以被370~410nm近紫外光有效地激发,在570~720nm范围内有多组发射峰。用于近紫外LED,可吸收其发光谱线,其发射光谱相比于大多数Eu掺杂发光材料而言,增加了波长大于620nm的深红色光谱,提高了灯的显色指数,特别能提高R9(饱和红色)。应用于近紫外光LED上,结合其他荧光粉可得到白光LED,也可有效地提高白光LED的显色性。
本发明方法制备的深红色发光材料,性能稳定,发光强度高。
Claims (3)
1.一种深红色发光材料,其特征在于,所述发光材料的组成式为:Sr2-aMaLa1-xGa3- bNbGe3-cQc(O1-d+F2d)14:xEu,其中x为Eu的掺杂量,M为Ca,Ba中至少一种,N为Al,In中至少一种,Q为Si,Sn中至少一种,0≤x≤1,0.001≤a≤0.4,0.001≤b≤0.5,0.001≤c≤0.5,0.001≤d≤0.1。
2.一种制备如权利要求1所述的深红色发光材料的制备方法,其特征在于,按照以下步骤加工:
1)按发光材料的组成称取原料,混合均匀,装入坩埚,在1000~1350℃下高温灼烧1~4小时;
2)将烧结物破碎、研磨、洗涤和烘干,得到发光材料。
3.根据权利要求2所述深红色发光材料的制备方法,其特征在于:原材料中氧化镓和氧化锗的添加量相比于按化学组成式计算所得值多添加1~5%。
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CN110591710A (zh) * | 2018-06-13 | 2019-12-20 | 广州航海学院 | 一种基于激光照明应用的铽重掺杂的镓锗酸盐绿色荧光粉及其制备方法 |
CN116515484A (zh) * | 2023-06-30 | 2023-08-01 | 内蒙古科技大学 | 一种高性能镓酸盐红色荧光粉 |
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CN104212458A (zh) * | 2014-08-11 | 2014-12-17 | 浙江工业大学 | 一种具有石榴石结构的红橙光荧光粉及其制备方法 |
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CN110591710A (zh) * | 2018-06-13 | 2019-12-20 | 广州航海学院 | 一种基于激光照明应用的铽重掺杂的镓锗酸盐绿色荧光粉及其制备方法 |
CN116515484A (zh) * | 2023-06-30 | 2023-08-01 | 内蒙古科技大学 | 一种高性能镓酸盐红色荧光粉 |
CN116515484B (zh) * | 2023-06-30 | 2023-09-12 | 内蒙古科技大学 | 一种镓酸盐红色荧光粉 |
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