文献类型：期刊文献

英文题名：Plasmon-enhanced efficient dye-sensitized solar cells using core-shell-structured β-NaYF4:Yb,Er@SiO2@Au nanocomposites

作者：Zhao, Peng[1];Zhu, Yihua[1];Yang, Xiaoling[1];Jiang, Xin[1];Shen, Jianhua[1];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2014

卷号：2

期号：39

起止页码：16523

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20144200104552);WOS:【SCI-EXPANDED(收录号:WOS:000342880200026)】；

基金：This work was supported by the National Natural Science Foundation of China (21236003, 21206042, 20925621, and 21176083), the Basic Research Program of Shanghai (13NM1400700, 13NM1400701), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Silica nanoparticles - Energy conversion efficiency - Light scattering - Nanocomposites - Shells (structures) - Titanium dioxide

摘要：Core-shell-structured beta-NaYF4:Yb,Er@SiO2@Au nanocomposites have been successfully prepared and applied for the first time as a multifunctional layer on top of a transparent TiO2 layer in dye-sensitized solar cells (DSSCs). Structural characterizations indicate that NaYF4:Yb,Er@SiO2 nanoparticles (NPs) have an average size of 300 nm in length and 230 nm in width. By adding these large dimension NPs as effective light scattering centers and upconversion centers, the performance of DSSCs was enhanced and an energy conversion efficiency of 7.56% was achieved. Furthermore, attachment of similar to 20 nm Au NPs on the surface of NaYF4:Yb,Er@SiO2 NPs could further improve the performance of DSSCs, resulting in an efficiency of 8.23%, which is a noticeable enhancement of 14.78% compared to the cell without the multifunctional layer. Therefore, this work provides an insight into possible further optimization of the efficiency of DSSCs.