中国物理B ›› 2013, Vol. 22 ›› Issue (2): 27801-027801.doi: 10.1088/1674-1056/22/2/027801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Hydrothermal synthesis of hexagonal-phase NaYF4: Er, Yb with different shapes for application as photovoltaic up-converters

王东丰a, 张晓丹a c, 刘永娟b, 吴春亚a, 张存善b, 魏长春a, 赵颖a   

  1. a Institute of Photo-electronics Thin Film Devices and Technique of Nankai University, Key Laboratory of Photo-electronics Thin Film Devices and Technique of Tianjin, Key Laboratory of Photo-electronic Information Science and Technology (Nankai University), Ministry of Education, Tianjin 300071, China;
    b School of Information Engineering. Hebei University of Technology, Tianjin 300071, China;
    c State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:2012-05-14 修回日期:2012-06-12 出版日期:2013-01-01 发布日期:2013-01-01
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant Nos. 2011CBA00705, 2011CBA00706, and 2011CBA00707); the National Natural Science Foundation of China (Grant No. 60976051); the Science and Technology Support Program of Tianjin, China (Grant No. 12ZCZDGX03600); and the Program for New Century Excellent Talents in University of China (Grant No. NCET-08-0295).

Hydrothermal synthesis of hexagonal-phase NaYF4: Er, Yb with different shapes for application as photovoltaic up-converters

Wang Dong-Feng (王东丰)a, Zhang Xiao-Dan (张晓丹)a c, Liu Yong-Juan (刘永娟)b, Wu Chun-Ya (吴春亚)a, Zhang Cun-Shan (张存善)b, Wei Chang-Chun (魏长春)a, Zhao Ying (赵颖)a   

  1. a Institute of Photo-electronics Thin Film Devices and Technique of Nankai University, Key Laboratory of Photo-electronics Thin Film Devices and Technique of Tianjin, Key Laboratory of Photo-electronic Information Science and Technology (Nankai University), Ministry of Education, Tianjin 300071, China;
    b School of Information Engineering. Hebei University of Technology, Tianjin 300071, China;
    c State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China
  • Received:2012-05-14 Revised:2012-06-12 Online:2013-01-01 Published:2013-01-01
  • Contact: Zhang Xiao-Dan E-mail:xdzhang@nankai.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant Nos. 2011CBA00705, 2011CBA00706, and 2011CBA00707); the National Natural Science Foundation of China (Grant No. 60976051); the Science and Technology Support Program of Tianjin, China (Grant No. 12ZCZDGX03600); and the Program for New Century Excellent Talents in University of China (Grant No. NCET-08-0295).

摘要: Hexagonal β-NaYF4 co-doped with Yb3+ and Er3+ is directly synthesized under mild conditions using a hydrothermal method. The variation of the ratio of Ln3+ to F- and ethylenediaminetetraacetic acid (EDTA) causes the shape of the microcrystal to change from microplate to microcolumn. The NaYF4 powder is mixed with polydimethylsiloxane (PDMS) to create an up-converter for thin film amorphous silicon solar cells so as to evaluate the effectiveness of the synthesized material as up-converter. In order to overcome the difficulty in measuring the effectiveness of up-conversion material, a new method of using near infrared illumination to measure the short circuit current densities of solar cells both with and without up-converters is developed. Up-converter with pure hexagonal NaYF4:Yb3+/Er3+microcrystal produces a high current output. Emission intensity data obtained by photoluminescence suggest that pure hexagonal NaYF4:Yb3+/Er3+ microcrystals are more efficient than nanocrystals when used as up-converting phosphors.

关键词: up-convesion, NaYF4, hydrothermal method, up-convertor, solar cells

Abstract: Hexagonal β-NaYF4 co-doped with Yb3+ and Er3+ is directly synthesized under mild conditions using a hydrothermal method. The variation of the ratio of Ln3+ to F- and ethylenediaminetetraacetic acid (EDTA) causes the shape of the microcrystal to change from microplate to microcolumn. The NaYF4 powder is mixed with polydimethylsiloxane (PDMS) to create an up-converter for thin film amorphous silicon solar cells so as to evaluate the effectiveness of the synthesized material as up-converter. In order to overcome the difficulty in measuring the effectiveness of up-conversion material, a new method of using near infrared illumination to measure the short circuit current densities of solar cells both with and without up-converters is developed. Up-converter with pure hexagonal NaYF4:Yb3+/Er3+microcrystal produces a high current output. Emission intensity data obtained by photoluminescence suggest that pure hexagonal NaYF4:Yb3+/Er3+ microcrystals are more efficient than nanocrystals when used as up-converting phosphors.

Key words: up-convesion, NaYF4, hydrothermal method, up-convertor, solar cells

中图分类号:  (Optical properties of bulk materials and thin films)

  • 78.20.-e
42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 78.55.-m (Photoluminescence, properties and materials) 42.70.Nq (Other nonlinear optical materials; photorefractive and semiconductor materials)