Hydrothermal synthesis of hexagonal-phase NaYF_4:Er,Yb with different shapes for application as photovoltaic up-converters

作     者：王东丰 张晓丹 刘永娟 吴春亚 张存善 魏长春 赵颖 

作者机构：Institute of Photo-electronics Thin Film Devices and Technique of Nankai UniversityKey Laboratory of Photo-electronics Thin Film Devices and Technique of TianjinKey Laboratory of Photo-electronic Information Science and Technology(Nankai University)Ministry of Education State Key Laboratory of Silicon MaterialsZhejiang University School of Information Engineering.Hebei University of Technology 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2013年第22卷第2期

页      面：492-498页

核心收录：

学科分类：080804[工学-电力电子与电力传动] 0808[工学-电气工程] 08[工学] 

基　　金：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) the Program for New Century Excellent Talents in University of China (Grant No. NCET-08-0295) 

主　　题：up-conversion NaYF4 hydrothermal method up-convertor solar cells 

摘      要：Hexagonal β-NaYF4 co-doped with Yb3＋ and Er3＋ is directly synthesized under mild conditions using a hydrothermal *** variation of the ratio of Ln3＋ to F-and ethylenediaminetetraacetic acid（EDTA） causes the shape of the microcrystal to change from microplate to *** 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 an *** 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 *** up-converter with pure hexagonal NaYF4：Yb3＋/Er3＋ microcrystal produces a high current *** intensity data obtained by photoluminescence suggest that pure hexagonal NaYF4：Yb3＋/Er3＋ microcrystals are more efficient than nanocrystals when used as up-converting phosphors.