CN101880526A - 一种蓝绿色硅酸盐发光材料 - Google Patents
一种蓝绿色硅酸盐发光材料 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 28
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 8
- 150000002500 ions Chemical class 0.000 claims abstract description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 5
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 5
- 229910052915 alkaline earth metal silicate Inorganic materials 0.000 claims abstract description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 3
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 3
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 3
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 3
- 238000009877 rendering Methods 0.000 abstract description 4
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 20
- 239000002994 raw material Substances 0.000 description 20
- 229910016066 BaSi Inorganic materials 0.000 description 16
- 239000002245 particle Substances 0.000 description 15
- 229910004298 SiO 2 Inorganic materials 0.000 description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 14
- 239000000203 mixture Substances 0.000 description 14
- 229910052573 porcelain Inorganic materials 0.000 description 14
- 238000001816 cooling Methods 0.000 description 11
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 10
- 239000004327 boric acid Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 230000005284 excitation Effects 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 238000000695 excitation spectrum Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 238000003746 solid phase reaction Methods 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 3
- 229910016036 BaF 2 Inorganic materials 0.000 description 3
- 101100513612 Microdochium nivale MnCO gene Proteins 0.000 description 3
- 238000000498 ball milling Methods 0.000 description 3
- 229910001632 barium fluoride Inorganic materials 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 238000000295 emission spectrum Methods 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 238000010671 solid-state reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000011812 mixed powder Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000010532 solid phase synthesis reaction Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- -1 Eu 2 O 3 Inorganic materials 0.000 description 1
- 229910017855 NH 4 F Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002284 excitation--emission spectrum Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001631 strontium chloride Inorganic materials 0.000 description 1
- AHBGXTDRMVNFER-UHFFFAOYSA-L strontium dichloride Chemical compound [Cl-].[Cl-].[Sr+2] AHBGXTDRMVNFER-UHFFFAOYSA-L 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000000584 ultraviolet--visible--near infrared spectrum Methods 0.000 description 1
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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
- C09K11/7783—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
- C09K11/77922—Silicates
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Abstract
本发明提供一种蓝绿色硅酸盐发光材料,为稀土激活的碱土金属硅酸盐,其化学通式为Ba1-bMbSi2O(5-a/2)Da:Eux,Lny,其中:M选自为Mg,Ca,Sr的一种或两种元素,0≤a<2,0≤b<0.5,0<x<1,0≤y<0.5;D选自Cl-、F-中的一种或两种元素离子;Ln选自Ce、Er、Pr、Mn中一种元素离子。该发光材料被200nm-450nm的紫外、紫光、蓝光激发,发出490-510nm左右的蓝绿光,可用于三基色灯及白光LED的显色指数的调节,也可用于特殊颜色装饰照明。
Description
技术领域
本发明涉及一种蓝绿色硅酸盐发光材料,属于稀土发光材料技术领域。
背景技术
随着生活水平的提高,人们对环境色彩的还原要求也日益提高,因此对灯的显色指数要求也逐渐提高,在三基色灯或白光LED灯,补充蓝绿的成分会使所发出的光色更接近于日光色。
中国专利200710036123.0发明了一种蓝绿色的铝酸盐发光材料,用于提高三基色节能灯中的显色指数。但该发光材料的激发范围窄不能用于白光LED显色指数的调节,而且发明里并没有提供材料的激发与发射光谱。以硅酸盐为基质的发光材料由于具有较宽的激发带,可以被紫外、近紫外、蓝光激发而发出各种颜色的光,成为了人们研究的热点,早在1968年Blasse(Blasse G,Wanmaker W L,ter Vrugt J W,et al.Fluorescence of Eu2+-activated silicates[J].Philips Res Repts,1968,23:189-200)对Eu2+在碱土金属硅酸盐的发光进行了较系统的研究,但该研究也只基于紫外激发的范围。
发明内容
本发明的目的是提供一种蓝绿色硅酸盐发光材料,该发光材料被200-450nm的紫外、紫光、蓝光所激发,为宽带激发,发出峰值波长在490-510nm左右的蓝绿光。该材料可用于稀土三基色节能灯及白光LED光色的调节,也可用于装饰用特殊颜色灯的制作。
本发明的蓝绿色硅酸盐发光材料,其主要成分为稀土激活的碱土金属硅酸盐,其化学通式为:
Ba1-bMbSi2O(5-a/2)Da:Eux,Lny
其中:M为Mg,Ca,Sr中的一或两种;D选自Cl-、F-中的一或两种元素离子;Ln选自Ce、Er、Pr或Mn中一种元素离子;a、b、x和y为摩尔系数,其范围为:0≤a<2,0≤b<0.5,0<x<1,0≤y<0.5;所述蓝绿色硅酸盐发光材料被200nm-450nm的紫外光、紫光、蓝光所激发,发出峰值波长为490~510nm的蓝绿光。
一种优选的方案:所述化学通式中的摩尔系数a、b、x和y的范围为:0≤a<1,0≤b<0.5,0<x<0.5,0≤y<0.2;
一种优选的方案:所述化学通式中的摩尔系数a、b、x和y的范围为:0≤a<1,0≤b<0.5,0<x<0.5,0<y<0.2;
一种优选的方案:所述化学通式中的摩尔系数a、b、x和y的范围为:0<a<1,0≤b<0.5,0<x<0.5,0≤y<0.2;
一种优选的方案:所述化学通式中的摩尔系数a、b、x和y的范围为:0<a<1,0≤b<0.5,0<x<0.5,0<y<0.2。
制备本发明的蓝绿色硅酸盐发光材料时,所用原料为化学通式中各元素的化合物,一般选用原料中,M的化合物是分别用它们所代表元素的碳酸盐、硝酸盐或其氧化物、氢氧化物,Eu、Ln的化合物是分别用它们所代表元素的氧化物、氢氧化物、卤化物;D的化合物可以是氯化钡、氯化锶、氯化铵、氟化钙、氟化钡、氟化铵、氟化镁。
制备方法可以是液相法或高温固相反应法。其中液相法为:采用溶胶-凝胶法或共沉淀法制备前驱体,将前驱体经过烘干、研磨、过筛后在氧化或惰性气体保护下灼烧,然后再在弱还原气氛下灼烧3~20小时,其中灼烧温度的范围为1000~1400℃,冷却后,破碎、分级而成。
高温固相反应法为:用行星式/快速球磨机干混或湿混适量的各种原材料,然后将混合好的粉末经过烘干后在弱还原气氛下灼烧3~20个小时,其中灼烧温度的范围为1000~1400℃,冷却后,破碎、分级而成。
高温固相反应法也可以采用二次烧成的方法:用行星式/快速球磨机干混或湿混适量的各种原材料,然后将混合好的粉末采取二次灼烧的方法,其中第一次灼烧条件为:在弱还原气氛中,灼烧时间为2~10小时,温度为1000~1300℃;第二次灼烧条件为:在弱还原气氛中,灼烧时间为2~20小时,灼烧温度为1000~1400℃,冷却后,破碎、分级而成。
在本发明中,采用高温固相法制备该蓝绿色硅酸盐发光材料,为了使各原材料充分混合均匀,可以采用湿法球磨混合,球磨介质可以是酒精、丙酮、异丙醇等有机溶剂,也可以是去离子水;也可采用干法球磨混合,球磨机可以使用高速球磨机,也可采用行星式快速球磨机。
在本发明中,采用高温固相法制备该蓝绿色硅酸盐发光材料,为了提高材料的品质,可在原料中加入少量0%~10%(wt%)的其他化合物,如,硼酸,NH4Cl,NH4F,(NH4)2HPO4,BaF2,CaF2,SrF2,ZnF2,MgF2,BaCl2·2H2O,MgCl2·6H2O,SrHPO4,CaHPO4,Li2CO3,NaF,K2CO3作为助熔剂参与固相反应。
本发明中发光材料的激发光谱和发射光谱采用Hitach F-4500荧光光谱仪测试。
附图说明
图1为发光材料BaSi2O4..99Cl0.02:Eu0.05的激发与发射光谱图。
图2为BaSi2O4..99Cl0.02:Eu0.05发光材料用于紫光芯片封装的光谱图
具体实施方式
实施例1:BaSi2O4..99Cl0.02:Eu0.05
BaCO3 49.2g
SiO2 30g
BaCl2·2H2O 0.61g
Eu2O3 2.2g
硼酸: 0.15g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1260℃保温4小时,冷却、破碎、分级,得到中心粒径为12μm的产品,发射峰值在502nm(λex=365nm),样品的激发与发射光谱如图1。
实施例2:BaSi2O5:Eu0.05Ce0.01
BaCO3 49.2g
SiO2 30g
CeO2 0.43g
Eu2O3 2.2g
(NH4)2HPO4: 0.24g
将上述原料于快速球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,二次还原烧成,第一次灼烧是在弱还原气氛(5%H2+95%N2)的推板炉中,于1260℃保温4小时,冷却、破碎,然后再在弱还原气氛(5%H2+95%N2)的推板炉中,于1100℃保温3小时,冷却、破碎,分级,得到中心粒径为12μm的产品,发射峰值在502nm(λex=365nm)。
实施例3:BaSi2O5:Eu0.05Mn0.01
BaCO3 49.2g
SiO2 30g
MnCO3 0.29g
Eu2O3 2.2g
硼酸: 0.15g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1000℃保温5小时,冷却、破碎,然后再在弱还原气氛(5%H2+95%N2)的推板炉中,于1260度保温4小时,冷却、破碎、分级,得到中心粒径为12μm的产品,发射峰值在504nm(λex=365nm)。
实施例4:BaSi2O4.99F0.02:Eu0.05
BaCO3 49.2g
SiO2 30g
BaF2 0.44g
Eu2O3 2.2g
NH4Cl: 0.48g
将上述原料于快速球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1260℃保温4小时,冷却、破碎、分级,得到中心粒径为12μm的产品,发射峰值在498nm(λex=365nm)。
实施例5:Ba0.8Sr0.2Si2O5:Eu0.12
SrCO3 7.38
BaCO3 39.36g
SiO2 30g
Eu2O3 5.28g
硼酸: 0.15g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的箱式炉中,升温速度为4℃/分钟,于1260℃保温4小时,冷却、破碎、分级,得到中心粒径为12μm的产品,发射峰值在505nm(λex=365nm)。
实施例6:BaSi2O5:Eu0.05Pr0.01
BaCO3 49.2g
SiO2 30g
Eu2O3 2.2g
Pr6O11 0.42g
Li2CO3: 0.13g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的箱式炉中,升温速度为3℃/分钟,于1260℃保温4小时,冷却、破碎、分级,得到中心粒径为12μm的产品,发射峰值在507nm(λcx=365nm)。
实施例7:BaSi2O5:Eu0.05Er0.01
BaCO3 49.2g
SiO2 30g
Eu2O3 2.2g
Er2O3 0.48g
MgCl2·6H2O: 0.46g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1100度保温4小时,冷却、破碎,然后再在弱还原气氛(5%H2+95%N2)的推板炉中,于1260℃保温6小时,冷却、破碎、分级,得到中心粒径为12μm的产品,发射峰值在504nm(λex=365nm)。
实施例8:BaSi2O4.5F:Eu0.05
BaCO3 24.6g
SiO2 30g
Eu2O3 2.2g
BaF2 22g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1000℃保温4小时,冷却、破碎,分级,得到中心粒径为12μm的产品,发射峰值在496nm(λex=365nm)。
实施例9:BaSi2O4.2FCl0.6:Eu0.05Ce0.3
BaCO3 9.84g
SiO2 30g
Eu2O3 2.2g
BaF2 22g
BaCl2·2H2O 18.32g
CeO2 12.9g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1000℃保温4小时,冷却、破碎,分级,得到中心粒径为12μm的产品,发射峰值在490nm(λex=365nm)。
实施例10:BaSi2O5:Eu0.25Ce0.01
BaCO3 49.2g
SiO2 30g
Eu2O3 1.1g
CeO2 0.43g
硼酸 0.15g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1270℃保温4小时,冷却、破碎,分级,得到中心粒径为12μm的产品,发射峰值在501nm(λex=365nm)。
实施例11:BaSi2O5:Eu0.6Mn0.4
BaCO3 49.2g
SiO2 30g
Eu2O3 26.4g
MnCO3 11.49g
硼酸 0.15g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1260℃保温4小时,冷却、破碎,分级,得到中心粒径为12μm的产品,发射峰值在510nm(λex=365nm)。
实施例12:Ba0.6Ca0.3Mg0.1Si2O5:Eu0.8
BaCO3 29.52g
CaCO3 7.5g
MgO 1g
SiO2 30g
Eu2O3 35.2g
硼酸 0.15g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1260℃保温5小时,冷却、破碎,分级,得到中心粒径为12μm的产品,发射峰值在508nm(λex=365nm)。
实施例13:Ba0.9Mg0.1Si2O5:Eu0.03
BaCO3 44.28g
MgO 1g
SiO2 30g
Eu2O3 1.32g
硼酸 0.15g
将上述原料于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1250℃保温5小时,冷却、破碎,分级,得到中心粒径为12μm的产品,发射峰值在493nm(λex=365nm)。
实施例14:BaSi2O5:Eu0.05Ce0.2
按化学计量比称取BaCO3、SiO2、BaF2、Eu2O3、CeO2、MnCO3各种原料,加入0.5%(wt%)的硼酸,于行星式球磨机中混合均匀后,装入95瓷以上的氧化铝坩锅中,在弱还原气氛(5%H2+95%N2)的推板炉中,于1260℃保温4小时,冷却、破碎、分级,得到中心粒径为12μm的产品,其发射峰值为502nm(λex=365nm)。
实施例15:BaSi2O5:Eu0.05
称取Ba(NO3)2,Eu(NO3)2分别为130.67g,137.98g溶于适量的去离子水配成溶液a,将相应量的硅胶溶解在去离子水中制备溶液b,将溶液a缓慢倒入溶液b中,并用氨水调节其pH值至9左右,然后在60℃下连续搅拌2小时,烘干并于700℃下氧化灼烧4h得到前驱体,将前驱体与0.5%的硼酸混匀在1180℃弱
还原气氛(5%H2+95%N2)中灼烧3小时,冷却、破碎、分级,得到中心粒径为12μm的产品,其发射峰值为502nm(λex=365nm)。
实施例16:BaSi2O4..99Cl0.02:Eu0.05发光材料用于紫光芯片的封装应用.实施步骤:将处理好的BaSi2O4..99Cl0.02:Eu0.05发光材料与AB胶(其中A胶为环氧树脂,B胶为固化剂)按质量浓度比为23%配制,研磨10分钟使其充分混合均匀。经过点胶、固晶、灌胶、固化、脱模等工序。可封成正向电压为3.0V,正向电流为20mA的Φ5型LED,用PMS-50型紫外-可见-近红外光谱分析仪对封装样品的光谱进行检测。其结果如图2所示。所用的芯片为紫光芯片(λem=406nm)。
Claims (5)
1.一种蓝绿色硅酸盐发光材料,其特征在于主要成分为稀土激活的碱土金属硅酸盐,其化学通式为:
Ba1-bMbSi2O(5-a/2)Da:Eux,Lny
其中:M为Mg,Ca,Sr中的一或两种;D选自Cl-、F-中的一或两种元素离子;Ln选自Ce、Er、Pr或Mn中一种元素离子;a、b、x和y为摩尔系数,其范围为:0≤a<2,0≤b<0.5,0<x<1,0≤y<0.5;所述蓝绿色硅酸盐发光材料被200nm-450nm的紫外光、紫光、蓝光所激发,发出峰值波长为490~510nm的蓝绿光。
2.根据权利要求1所述的蓝绿色硅酸盐发光材料,其特征在于所述摩尔系数a、b、x和y的范围为:0≤a<1,0≤b<0.5,0<x<0.5,0≤y<0.2。
3.根据权利要求1所述的蓝绿色硅酸盐发光材料,其特征在于所述摩尔系数a、b、x和y的范围为:0≤a<1,0≤b<0.5,0<x<0.5,0<y<0.2。
4.根据权利要求1或2所述的蓝绿色硅酸盐发光材料,其特征在于所述摩尔系数a、b、x和y的范围为:0<a<1,0≤b<0.5,0<x<0.5,0≤y<0.2。
5.根据权利要求1、2或3所述的蓝绿色硅酸盐发光材料,其特征在于所述摩尔系数a、b、x和y的范围为:0<a<1,0≤b<0.5,0<x<0.5,0<y<0.2。
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KR1020117026838A KR20120022916A (ko) | 2009-05-07 | 2010-05-05 | 청-녹 실리케이트 발광물질 |
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PCT/CN2010/000632 WO2010127560A1 (zh) | 2009-05-07 | 2010-05-05 | 一种蓝绿色硅酸盐发光材料 |
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