The size-dependent upconversion luminescence properties of β-NaYF4:Yb3+,Ho3+ microprisms

被引：12

作者：

Chen, Yongsheng ^{[1
]}

Hao, Xiuli ^{[1
]}

Zhou, Jianpeng ^{[1
]}

Jiao, Yuechao ^{[1
]}

He, Wei ^{[1
]}

Wang, Honghong ^{[1
]}

Lu, Jingxiao ^{[1
]}

Yang, Shi-e ^{[1
]}

机构：

[1] Zhengzhou Univ, Dept Phys, Key Lab Mat Phys, Zhengzhou 450052, Peoples R China

来源：

MATERIALS LETTERS | 2012年 / 83卷

基金：

中国国家自然科学基金;

关键词：

Optical materials and properties; Upconversion; A-Si/a-Si tandem solar cell; Nanocomposites; SOLAR-CELLS; NANOCRYSTALS; SILICON;

D O I：

10.1016/j.matlet.2012.05.122

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

beta-NaYF4:Yb3+(25%),Ho3+(1%) microprisms with different grain sizes were synthesized by a hydrothermal method. The structure, composition and upconversion emission properties of the products were characterized by scanning electron microscopy, x-ray diffractometer, inductively coupled plasma atomic emission spectrometry and spectrophotometer. It is found that with the decrease of NaF/NH4HF2 ratios in solution, the lengths of the beta-NaYF4:Yb3+(25%),Ho3+(1%) microprisms increase from similar to 5 to similar to 15 mu m. The enhancements in the UC emissions with the increase of grain sizes resulted from the raise of the Yb3+ concentrations in crystals. Applying these materials at the back of a-Si single junction and a-Si/a-Si tandem solar cells, currents of 2.34 and 1.02 mu A are obtained under 60 mW (80 mW/cm(2)) 980 nm laser excitation, respectively. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：49 / 51

页数：3

共 13 条

[1] Towards efficient upconversion and downconversion of NaYF4:Ho3+,Yb3+ phosphors
Chen, X. P.
Zhang, W. J.
Zhang, Q. Y.
[J]. PHYSICA B-CONDENSED MATTER, 2011, 406 (6-7) : 1248 - 1252
[2] Towards upconversion for amorphous silicon solar cells
de Wild, J.
Meijerink, A.
Rath, J. K.
van Sark, W. G. J. H. M.
Schropp, R. E. I.
[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2010, 94 (11) : 1919 - 1922
[3] Enhanced near-infrared response of a-Si:H solar cells with β-NaYF4:Yb3+ (18%), Er3+ (2%) upconversion phosphors
de Wild, J.
Rath, J. K.
Meijerink, A.
van Sark, W. G. J. H. M.
Schropp, R. E. I.
[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2010, 94 (12) : 2395 - 2398
[4] Conversion of infrared radiation into visible emission in NaY(WO4)2:Yb3+, Ho3+ crystal
Huang, Xinyang
Wang, Guofu
[J]. JOURNAL OF LUMINESCENCE, 2010, 130 (10) : 1702 - 1707
[5] Jia G, 2001, MATER LETT, V65, P2407
[6] Microcrystalline silicon and micromorph tandem solar cells
Keppner, H
Meier, J
Torres, P
Fischer, D
Shah, A
[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1999, 69 (02): : 169 - 177
[7] Infrared-laser induced photon avalanche upconversion in Ho3+-Yb3+ codoped fluoroindate glasses
Lahoz, F
Martín, IR
Briones, A
[J]. JOURNAL OF APPLIED PHYSICS, 2004, 95 (06) : 2957 - 2962
[8] Upconversion mechanisms in rare-earth doped glasses to improve the efficiency of silicon solar cells
Lahoz, F.
Perez-Rodriguez, C.
Hernandez, S. E.
Martin, I. R.
Lavin, V.
Rodriguez-Mendoza, U. R.
[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2011, 95 (07) : 1671 - 1677
[9] Synthesis of NaYF4 nanocrystals with predictable phase and shape
Liang, Xin
Wang, Xun
Zhuang, Jing
Peng, Qing
Li, Yadong
[J]. ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (15) : 2757 - 2765
[10] Highly efficient multicolor up-conversion emissions and their mechanisms of monodisperse NaYF4:Yb,Er core and core/shell-structured nanocrystals
Mai, Hao-Xin
Zhang, Ya-Wen
Sun, Ling-Dong
Yan, Chun-Hua
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (37) : 13721 - 13729

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