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1. 深圳清华大学研究院, 广东 深圳 518057
2. 哈尔滨工业大学 深圳研究生院, 广东 深圳 518055
纸质出版日期:2016-8-5,
收稿日期:2016-3-29,
修回日期:2016-5-20,
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檀满林, 尚旭冉, 王晓伟等. 太阳电池用YVO<sub>4</sub>:Eu<sup>3+</sup>下转换材料的掺杂改性研究[J]. 发光学报, 2016,37(8): 912-918
TAN Man-lin, SHANG Xu-ran, WANG Xiao-wei etc. Doping Modification of YVO<sub>4</sub>:Eu<sup>3+</sup> Down-conversion Materials for Solar Cell Applications[J]. Chinese Journal of Luminescence, 2016,37(8): 912-918
檀满林, 尚旭冉, 王晓伟等. 太阳电池用YVO<sub>4</sub>:Eu<sup>3+</sup>下转换材料的掺杂改性研究[J]. 发光学报, 2016,37(8): 912-918 DOI: 10.3788/fgxb20163708.0912.
TAN Man-lin, SHANG Xu-ran, WANG Xiao-wei etc. Doping Modification of YVO<sub>4</sub>:Eu<sup>3+</sup> Down-conversion Materials for Solar Cell Applications[J]. Chinese Journal of Luminescence, 2016,37(8): 912-918 DOI: 10.3788/fgxb20163708.0912.
为进一步提高YVO
4
材料的下转换发光性能,在改进后的溶胶-凝胶法制备的YVO
4
:Eu
3+
中,通过掺入Bi
3+
来拓宽其在紫外波段的光谱吸收并提高其发光强度,通过掺入P
5+
达到以PO
4
3-
部分取代VO
4
3-
来改善YVO
4
:Eu
3+
的光输出稳定性及温度猝灭特性的目的。研究表明,掺入的Bi
3+
和P
5+
可成功取代YVO
4
晶格中的Y
3+
和V
5+
。当Bi
3+
掺入量较少时,样品仍然为四方晶系,Bi
3+
较好地取代了Y
3+
的晶格位置,形成单相的晶体结构。而在掺入少量的P
5+
之后,YVO
4
与YPO
4
之间形成了均匀的固溶体。在350 nm激发光源作用下,当Bi
3+
和P
5+
掺杂摩尔分数分别为0.04和0.10时,发光强度达到最大,特别是YV
0.90
P
0.10
O
4
:0.05Eu
3+
在619 nm处的发光强度要比YVO
4
:0.05Eu
3+
的发光强度增大1.9倍。
Bismuth (Bi
3+
) and phosphorus (P
3+
) ions doped YVO
4
:Eu
3+
down-conversion materials were prepared by modified sol-gel method to broaden the absorption range of ultraviolet light and enhance the stability of light emission. It is shown that some positions of Yttrium (Y
3+
) and Vanadium (V
5+
) ions can be successfully replaced by incorporated Bismuth (Bi
3+
) and phosphorus (P
3+
) ions in the YVO
4
lattice. As to low Bi
3+
doping
the crystal structure is still tetragonal and the position of Y
3+
is well substituted by Bi
3+
. While for low P
3+
doping
a homogeneous solid solution is formed between YVO
4
and YPO
4
.Under the excitation of 325 nm
the highest luminescence intensity can be obtained with Bi
3+
mole fraction of 0.04 and P
5+
mole fraction of 0.10
respectively. In that case
the instensity of YV
0.90
P
0.10
O
4
:0.05Eu
3+
can increase up to 1.9 times comparing to YVO
4
:0.05Eu
3+
.
钒酸钇下转换掺杂改性
yttrium vanadatedown-conversiondoping modification
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