一种高亮度铝酸盐长时发光材料及其制备方法
技术领域
本发明涉及一种高亮度铝酸盐长时发光材料及其制备方法。
背景技术
人们研究较早的长时发光材料是以Cu或Ag作为激活剂的硫化物材料,如碱土硫化物、硫化锌等。但是硫化物长时发光材料存在着明显的缺点,如发光亮度低、发光时间短、化学稳定性差、易潮解等。为了克服这些缺点,往往掺入放射性元素如Pm147、Ra等,但放射性元素地加入对人身体健康和环境都造成伤害,极大地限制了其使用范围。
20世纪60年代,人们观察到了SrAl2O4:Eu2+的长时发光现象,以后对这种材料又进行了进一步的研究,用紫外光或日光激发后,能发射明亮持久的光,其发光亮度、发光时间、材料化学稳定性都远远超过硫化物材料。这种长时发光材料的出现,引起了人们对寻找新型长时发光材料的极大兴趣。近年来,关于长时发光材料的研究重点在于稀土元素的掺杂,但一般都只掺杂一种或两种稀土元素。
发明内容
本发明的目的是提供一种可以由各种的激发光源的,发光亮度高、发光时间长、化学性质稳定的铝酸盐长时发光材料。
本发明的另一目的是提供一种制备该发光材料的方法,该发光材料的制备方法简单、易于操作、无污染、成本低。
为实现上述目的,本发明采取以下技术方案:
本发明的一种铝酸盐长时发光材料的化学式为:M1-x-y-zAl2O4:Eux,Ndy,REz。其中,M为Mg,Ca,Sr,Ba中至少一种;RE为La,Ce,Pr,Sm,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Y,Sc中至少一种,0.0001≤x≤0.1,0.0001≤y≤0.2,0.0001≤z≤0.05。
本发明的一种铝酸盐体系的长时发光材料。在该材料的制备过程中,掺杂了三种或三种以上的稀土元素,所得材料在紫外范围内的激发峰宽、激发效果好,具有发光亮度高、发光时间长、化学性质稳定、无污染等特点,在生产和生活中可以得到广泛应用。
本发明是一种铝酸盐体系的长时发光材料,具有发光亮度高,发光时间长,化学稳定性好,无污染等特点。利用长时发光材料的储光-发光特性,其应用范围可涵盖工农业生产及人们生活的许多方面。这类材料可以进一步作成发光涂料、发光消防安全标志、发光油墨、发光塑料、发光纸等,在建筑装潢、交通运输、军事设施、消防应急、日用消费品等领域得到广泛应用。
制造上述铝酸盐长时发光材料的方法包括以下步骤:
(1).以Mg,Ca,Sr,Ba,Al,Eu,Nd,La,Ce,Pr,Sm,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Y,Sc的氧化物、氢氧化物或相应盐类为原料,并按上述材料的化学式组成及化学计量比称取所述相应的原料;
(2).在上述原料中添加一定量的反应助熔剂,并将原料与反应助熔剂充分混匀;
(3).将上述混合物料进行还原焙烧;
(4).再经后处理过程,即制成一种铝酸盐长时发光材料。
在所述步骤(1)中,相应的盐类为碳酸盐、硫酸盐、盐酸盐、硝酸盐等中的一种或几种。
在所述步骤(2)中,是以H3BO3、NH4Cl、BaF2、KH2PO4中的一种或几种为反应助熔剂。
在所述步骤(2)中,反应助溶剂的用量为合成材料摩尔数的1%~10%。
在所述步骤(3)中,还原焙烧次数可以是一次,也可以是多次。
在所述步骤(3)中,还原焙烧温度为900~1600℃。
在所述步骤(3)中,单次还原焙烧时间0.5~15小时。
在所述步骤(4)中,后处理过程为常规过程,即将还原焙烧产物磨细,过筛的过程。
本发明所得的铝酸盐长时发光材料在激发光源停止激发后,至少十几个小时都可以观察到该材料的发光。激发光源可以通过电磁辐射如X射线,太阳光,或人造光源发出的光来产生激发。该发光材料在夜光涂料、安全标志和液晶显示器的背景灯等领域有广阔的应用前景。
本发明的特点是:
发明的发光材料发光亮度高、发光时间长、化学性质稳定;
本发明的材料的激发光谱非常宽,在整个紫外范围内的激发效果都非常好。
(见图1)
该发光材料的制备方法简单、易于操作,无污染,成本低。
附图说明
图1为Ca0.974Al2O4:Eu0.005,Nd0.015,La0.006的激发光谱图
图2为Ca0.974Al2O4:Eu0.005,Nd0.015,La0.006的发射光谱图
具体实施方式
实施例1
称取CaCO3 7.294g,Al(OH)3 12.001g,H3BO3 0.3505g,Eu2O3 0.0712g,Nd2O30.2043g,La2O3 0.0791g,将以上原料混磨均匀后,在1350℃还原条件下焙烧4小时,将焙烧产物磨细,过筛,即得化学组成为Ca0.974Al2O4:Eu0.005,Nd0.015,La0.006的样品,其激发光谱见图1,监测波长:440nm。从图1上看出,该激发光谱激发峰较宽,从整个紫外范围内的激发效果都非常好。其发射光谱见图2,激发波长:365nm,从图2上可以看出,它的发射强度较高,发射主峰在440nm。其发光亮度和发光时间见表1。
实施例2:
称取CaCO3 8.650g,Al2O3 9.791g,H3BO3 0.4156g,BaF2 0.2525g,Eu2O30.1689g,Nd2O3 0.4847g,La2O3 0.0939g,Dy2O3 0.1433g,其制造方法与实施例1相同。得到化学式为:Ca0.946Al2O4:Eu0.01,Nd0.03,La0.006,Dy0.008,其发光亮度和发光时间见表1,均高于比较例。
实施例3
称取SrCO3 9.123g,Al(OH)3 10.176g,H3BO3 0.2972g,Eu2O3 0.0604g,Nd2O3 0.1733g,La2O3 0.0671g,Dy2O3 0.1024g,其制造方法与实施例1相同。得到化学式为:Sr0.966Al2O4:Eu0.005,Nd0.015,La0.006,Dy0.008,其发光亮度和发光时间见表1,均高于比较例。
实施例4
称取CaCO3 6.856g,Al2O3 12.468g,H3BO3 0.3294g,Eu2O3 0.0670g,Nd2O30.1921g,Tm2O3 0.0881g,其制造方法与实施例1相同。得到化学式为:Ca0.954Al2O4:Eu0.01,Nd0.03,Tm0.006,其发光亮度和发光时间见表1,均高于比较例。
实施例5-实施例148
除按表1中的各实施例的化学式组成及化学计量比称取原料外,其余的制造步骤均与实施例1相同,得到化学组成及其发光亮度和发光时间见表1,其发光亮度和发光时间都明显高于比较例。
比较例:称取CaCO3 7.587g,Al(OH)3 11.827g,H3BO3 0.3281g,Eu2O30.0667g,Nd2O3 0.1913g,其制造方法与实施例1相同,得到化学组成为Ca0.98Al2O4:Eu0.005,Nd0.015的样品。其发光亮度和发光时间见表1,其发光亮度和发光时间都明显低于各实施例。
表1实施例1-148和比较例的化学式及其发光亮度和发光时间
实施例 |
化学式 |
相对发光亮度 |
相对发光时间 |
1 |
Ca0.974Al2O4:Eu0.005,Nd0.015,La0.006 |
153 |
193 |
2 |
Ca0.946Al2O4:Eu0.01,Nd0.03,La0.006,Dy0.008 |
160 |
206 |
3 |
Sr0.966Al2O4:Eu0.005,Nd0.015,La0.006,Dy0.008 |
201 |
165 |
4 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Tm0.006 |
146 |
175 |
5 |
Mg0.974Al2O4:Eu0.005,Nd0.015,La0.006 |
110 |
122 |
6 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Ce0.006 |
108 |
120 |
7 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Pr0.006 |
109 |
120 |
8 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Sm0.006 |
106 |
116 |
9 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Gd0.006 |
108 |
118 |
10 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Tb0.006 |
107 |
119 |
11 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Dy0.006 |
109 |
121 |
12 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Ho0.006 |
106 |
118 |
13 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Er0.006 |
105 |
114 |
14 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Tm0.006 |
108 |
116 |
15 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Yb0.006 |
107 |
115 |
16 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Lu0.006 |
108 |
117 |
17 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Y0.006 |
106 |
115 |
18 |
Mg0.974Al2O4:Eu0.005,Nd0.015,Sc0.006 |
104 |
113 |
19 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Ce0.006 |
142 |
176 |
20 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Pr0.006 |
150 |
187 |
21 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Sm0.006 |
153 |
192 |
22 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Gd0.006 |
146 |
179 |
23 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Tb0.006 |
149 |
185 |
24 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Dy0.006 |
159 |
201 |
25 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Ho0.006 |
156 |
196 |
26 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Er0.006 |
157 |
198 |
27 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Yb0.006 |
146 |
179 |
28 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Lu0.006 |
150 |
190 |
29 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Y0.006 |
145 |
178 |
30 |
Ca0.974Al2O4:Eu0.005,Nd0.015,Sc0.006 |
149 |
182 |
31 |
Sr0.974Al2O4:Eu0.005,Nd0.015,La0.006 |
203 |
166 |
32 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Ce0.006 |
200 |
162 |
33 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Pr0.006 |
201 |
162 |
34 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Sm0.006 |
195 |
155 |
35 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Gd0.006 |
199 |
160 |
36 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Tb0.006 |
196 |
157 |
37 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Dy0.006 |
202 |
164 |
38 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Ho0.006 |
199 |
159 |
39 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Er0.006 |
199 |
159 |
40 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Tm0.006 |
196 |
157 |
41 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Yb0.006 |
194 |
155 |
42 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Lu0.006 |
196 |
156 |
43 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Y0.006 |
194 |
153 |
44 |
Sr0.974Al2O4:Eu0.005,Nd0.015,Sc0.006 |
197 |
155 |
45 |
Ba0.974Al2O4:Eu0.005,Nd0.015,La0.006 |
148 |
137 |
46 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Ce0.006 |
140 |
126 |
47 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Pr0.006 |
141 |
128 |
48 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Sm0.006 |
142 |
127 |
49 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Gd0.006 |
146 |
131 |
50 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Tb0.006 |
144 |
130 |
51 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Dy0.006 |
147 |
133 |
52 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Ho0.006 |
148 |
133 |
53 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Er0.006 |
149 |
135 |
54 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Tm0.006 |
140 |
126 |
55 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Yb0.006 |
146 |
132 |
56 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Lu0.006 |
146 |
130 |
57 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Y0.006 |
146 |
130 |
58 |
Ba0.974Al2O4:Eu0.005,Nd0.015,Sc0.006 |
148 |
131 |
59 |
Mg0.954Al2O4:Eu0.01,Nd0.03,La0.006 |
108 |
118 |
60 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Ce0.006 |
105 |
115 |
61 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Pr0.006 |
104 |
113 |
62 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Sm0.006 |
104 |
114 |
63 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Gd0.006 |
107 |
116 |
64 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Tb0.006 |
105 |
114 |
65 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Dy0.006 |
108 |
117 |
66 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Ho0.006 |
105 |
115 |
67 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Er0.006 |
106 |
115 |
68 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Tm0.006 |
107 |
116 |
69 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Yb0.006 |
106 |
114 |
70 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Lu0.006 |
105 |
112 |
71 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Y0.006 |
105 |
113 |
72 |
Mg0.954Al2O4:Eu0.01,Nd0.03,Sc0.006 |
106 |
115 |
73 |
Ca0.954Al2O4:Eu0.01,Nd0.03,La0.006 |
158 |
201 |
74 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Ce0.006 |
144 |
180 |
75 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Pr0.006 |
152 |
190 |
76 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Sm0.006 |
153 |
191 |
77 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Gd0.006 |
148 |
182 |
78 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Tb0.006 |
152 |
190 |
79 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Dy0.006 |
159 |
203 |
80 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Ho0.006 |
153 |
191 |
81 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Er0.006 |
152 |
191 |
82 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Tm0.006 |
151 |
189 |
83 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Yb0.006 |
146 |
179 |
84 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Lu0.006 |
145 |
178 |
85 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Y0.006 |
147 |
180 |
86 |
Ca0.954Al2O4:Eu0.01,Nd0.03,Sc0.006 |
150 |
185 |
87 |
Sr0.954Al2O4:Eu0.01,Nd0.03,La0.006 |
201 |
162 |
88 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Ce0.006 |
200 |
160 |
89 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Pr0.006 |
198 |
159 |
90 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Sm0.006 |
193 |
155 |
91 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Gd0.006 |
194 |
156 |
92 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Tb0.006 |
196 |
156 |
93 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Dy0.006 |
200 |
159 |
94 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Ho0.006 |
197 |
158 |
95 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Er0.006 |
195 |
156 |
96 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Tm0.006 |
199 |
157 |
97 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Yb0.006 |
195 |
156 |
98 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Lu0.006 |
198 |
156 |
99 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Y0.006 |
195 |
151 |
100 |
Sr0.954Al2O4:Eu0.01,Nd0.03,Sc0.006 |
196 |
153 |
101 |
Ba0.954Al2O4:Eu0.01,Nd0.03,La0.006 |
146 |
135 |
102 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Ce0.006 |
144 |
130 |
103 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Pr0.006 |
141 |
127 |
104 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Sm0.006 |
142 |
125 |
105 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Gd0.006 |
144 |
131 |
106 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Tb0.006 |
142 |
130 |
107 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Dy0.006 |
148 |
137 |
108 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Ho0.006 |
146 |
133 |
109 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Er0.006 |
144 |
131 |
110 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Tm0.006 |
140 |
127 |
111 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Yb0.006 |
142 |
128 |
112 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Lu0.006 |
141 |
127 |
113 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Y0.006 |
142 |
129 |
114 |
Ba0.954Al2O4:Eu0.01,Nd0.03,Sc0.006 |
144 |
130 |
115 |
Mg0.966Al2O4:Eu0.005,Nd0.015,La0.006,Dy0.008 |
112 |
120 |
116 |
Mg0.966Al2O4:Eu0.005,Nd0.015,Sc0.008,Ho0.006 |
110 |
118 |
117 |
Mg0.96Al2O4:Eu0.005Nd0.015,Tm0.006,Er0.006,Sm0.008 |
111 |
121 |
118 |
Mg0.948Al2O4:Eu0.01,Nd0.03,Er0.006,Gd0.006 |
111 |
119 |
119 |
Mg0.946Al2O4:Eu0.01,Nd0.03,Tm0.006,Ce0.008 |
110 |
117 |
120 |
Mg0.942Al2O4:Eu0.01,Nd0.03,Tb0.006,Lu0.006,Y0.006 |
112 |
121 |
121 |
Ca0.968Al2O4:Eu0.005,Nd0.015,Dy0.006,Er0.006 |
164 |
208 |
122 |
Ca0.966Al2O4:Eu0.005,Nd0.015,Pr0.006,La0.008 |
160 |
206 |
123 |
Ca0.966Al2O4:Eu0.005,Nd0.015,Y0.006,Tm0.008 |
157 |
200 |
124 |
Ca0.96Al2O4:Eu0.005,Nd0.015,Sm0.006,Ce0.006,Tb0.008 |
160 |
201 |
125 |
Ca0.962Al2O4:Eu0.005,Nd0.015,Ho0.006,Dy0.006,Pr0.006 |
162 |
200 |
126 |
Ca0.946Al2O4:Eu0.01,Nd0.03,Yb0.006,Tm0.008 |
162 |
198 |
127 |
Ca0.948Al2O4:Eu0.01,Nd0.03,Gd0.006,Sm0.006 |
159 |
195 |
128 |
Ca0.948Al2O4:Eu0.01,Nd0.03,Tb0.006,Er0.006 |
155 |
191 |
129 |
Ca0.938Al2O4:Eu0.01,Nd0.03,Dy0.006,Ho0.008,Er0.008 |
162 |
196 |
130 |
Ca0.942Al2O4:Eu0.01,Nd0.03,Pr0.006,La0.006,Ce0.006 |
161 |
193 |
131 |
Sr0.966Al2O4:Eu0.005,Nd0.015,La0.006,Dy0.008 |
206 |
163 |
132 |
Sr0.968Al2O4:Eu0.005,Nd0.015,Ce0.006,Tm0.006 |
204 |
161 |
133 |
Sr0.968Al2O4:Eu0.005,Nd0.015,Pr0.006,Lu0.006 |
200 |
159 |
134 |
Sr0.958Al2O4:Eu0.005,Nd0.015,Pm0.006,Tm0.008,Gd0.008 |
201 |
160 |
135 |
Sr0.96Al2O4:Eu0.005,Nd0.015,Sm0.006,Tb0.006,Er0.008 |
203 |
165 |
136 |
Sr0.948Al2O4:Eu0.01Nd0.03,Gd0.006,Tm0.006 |
200 |
161 |
137 |
Sr0.946Al2O4:Eu0.01,Nd0.03,Tb0.006,Sc0.008 |
201 |
161 |
138 |
Sr0.946Al2O4:Eu0.01,Nd0.03,Dy0.006,Lu0.008 |
200 |
159 |
139 |
Sr0.942Al2O4:Eu0.01Nd0.03,Ho0.006,Ce0.006,Pr0.006 |
202 |
162 |
140 |
Sr0.94Al2O4:Eu0.01,Nd0.03,Er0.006,Sm0.006,Yb0.008 |
201 |
161 |
141 |
Ba0.966Al2O4:Eu0.005,Nd0.015Ce0.006,Yb0.008 |
148 |
138 |
142 |
Ba0.968Al2O4:Eu0.005,Nd0.015,Pr0.006,La0.006 |
145 |
137 |
143 |
Ba0.968Al2O4:Eu0.005,Nd0.015,Y0.006,Gd0.006 |
143 |
134 |
144 |
Ba0.958Al2O4:Eu0.005,Nd0.015,Sm0.006,Dy0.008,Lu0.008 |
146 |
135 |
145 |
Ba0.946Al2O4:Eu0.01,Nd0.03,Gd0.006,Pr0.008 |
145 |
132 |
146 |
Ba0.948Al2O4:Eu0.01,Nd0.03,Tb0.006,Ho0.006 |
143 |
131 |
147 |
Ba0.948Al2O4:Eu0.01,Nd0.03,Dy0.006,Tm0.006 |
144 |
135 |
148 |
Ba0.94Al2O4:Eu0.01,Nd0.03,Sm0.006,Tb0.006,Lu0.008 |
147 |
136 |
比较例 |
Ca0.98Al2O4:Eu0.005,Nd0.015 |
100 |
100 |
从表1看出,从实施例1-实施例148,这些发光材料的发光亮度和发光时间都很高,均高于比较例。