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α-TeO2:Tm3+,Ho3+,Yb3+纳米材料的红绿蓝色上转换发光
Controllable Red,Green and Blue Upconversion Luminescence of α-TeO2:Tm3+,Ho3+,Yb3+ Nanoparticles
- 发光学报 2012年33卷第10期 页码：1060-1067
- 作者机构：
暨南大学化学系,广东 广州,510632
- 作者简介：
- 基金信息：国家自然科学基金(21075053)资助项目()
DOI：10.3788/fgxb20123310.1060
中图分类号： O482.31纸质出版日期：2012-10-10，
收稿日期：2012-6-25，
修回日期：2012-7-22，
扫 描 看 全 文
方增滨, 涂阳墨, 胡辉, 白燕. <em>α</em>-TeO<sub>2</sub>:Tm<sup>3+</sup>,Ho<sup>3+</sup>,Yb<sup>3+</sup>纳米材料的红绿蓝色上转换发光[J]. 发光学报, 2012,(10): 1060-1067
FANG Zeng-bin, TU Yang-mo, HU Hui, BAI Yan. Controllable Red,Green and Blue Upconversion Luminescence of α-TeO<sub>2</sub>:Tm<sup>3+</sup>,Ho<sup>3+</sup>,Yb<sup>3+</sup> Nanoparticles[J]. Chinese Journal of Luminescence, 2012,(10): 1060-1067
方增滨, 涂阳墨, 胡辉, 白燕. <em>α</em>-TeO<sub>2</sub>:Tm<sup>3+</sup>,Ho<sup>3+</sup>,Yb<sup>3+</sup>纳米材料的红绿蓝色上转换发光[J]. 发光学报, 2012,(10): 1060-1067 DOI： 10.3788/fgxb20123310.1060.
FANG Zeng-bin, TU Yang-mo, HU Hui, BAI Yan. Controllable Red,Green and Blue Upconversion Luminescence of α-TeO<sub>2</sub>:Tm<sup>3+</sup>,Ho<sup>3+</sup>,Yb<sup>3+</sup> Nanoparticles[J]. Chinese Journal of Luminescence, 2012,(10): 1060-1067 DOI： 10.3788/fgxb20123310.1060.
摘要
利用简单的水热合成法成功制备出
α
-TeO
2
[DK]∶Ho
3+
Yb
3+
、
α
-TeO
2
[DK]∶Tm
3+
Yb
3+
和
α
-TeO
2
[DK]∶Tm
3+
Ho
3+
Yb
3+
纳米材料
用 980 nm 的近红外光作为激发光源测定了样品的室温上转换发射光谱。结果表明:样品
α
-TeO
2
[DK]∶Ho
3+
Yb
3+
分别发射绿光(545 nm)和红光(651 nm)
分别对应于Ho
3+
离子的
5
S
2
→
5
I
8
和
5
F
5
→
5
I
8
能级跃迁。随着Yb
3+
的摩尔分数从5% 增加到15%
样品在545 nm处的绿光强度明显变大
发光颜色由黄光向绿光转变。样品
α
-TeO
2
[DK]∶ Tm
3+
Yb
3+
在476 nm处发射出蓝光
对应于Tm
3+
离子的
1
G
4
→
3
H
6
能级跃迁
两个弱红光峰(651
675 nm)分别对应于Tm
3+
离子的
1
G
4
→
3
F
4
和
3
F
2
→
3
H
6
能级跃迁。随着Yb
3+
离子浓度的提高
蓝光与红光的相对强度也在显著提高。基于可调控性蓝光、绿光和红光的产生
α
-TeO
2
[DK]∶Tm
3+
Ho
3+
Yb
3+
纳米材料能产生不同颜色的光
包括白光。
Abstract
α
-TeO
2
[DK]∶Ho
3+
Yb
3+
α
-TeO
2
[DK]∶Tm
3+
Yb
3+
and
α
-TeO
2
[DK]∶Tm
3+
Ho
3+
Yb
3+
nanoparticles were prepared via a hydrothermal process.Under 980 nm excitation
α
-TeO
2
[DK]∶Ho
3+
Yb
3+
nanoparticles showed green (545 nm) and red (651 nm) emission
which were attributed to the
5
S
2
→
5
I
8
and
5
F
5
→
5
I
8
transitions
respectively.The upconversion emission color changed markedly from yellow to green when the mole fraction of Yb
3+
ions changed from 5% to 15% due to the green emission at 545 nm increased.The
α
-TeO
2
[DK]∶Tm
3+
Yb
3+
sample showed blue emission at 476 nm
which was attributed to the
1
G
4
→
3
H
6
transition
and two weak red (651
675 nm) emissions
which were attributed to the
1
G
4
→
3
F
4
and
3
F
2
→
3
H
6
transitions
respectively.The relative intensity ratio of the blue emission to the red emissions increased gradually with increasing Yb
3+
concentration.Based on the generation of blue
green and red emissions
the
α
-TeO
2
[DK]∶Tm
3+
Ho
3+
Yb
3+
nanoparticles could compose different color
including white
by controlling the doping concentration of rare earths in the
α
-TeO
2
nanoparticles.
关键词
上转换白光Tm3+Ho3+Yb3+α-TeO2纳米粒子
Keywords
upconversionwhite luminescenceTm3+Ho3+Yb3+α-TeO2 nanoparticles
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