A nanostructure-based counter electrode for dye-sensitized solar cells by assembly of silver nanoparticles

被引：20

作者：

Dong, Hua ^{[1
]}

Wu, Zhaoxin ^{[1
]}

Gao, Yucui ^{[1
]}

El-Shafei, Ahmed ^{[2
]}

Jiao, Bo ^{[1
]}

Dai, Yang ^{[1
]}

Hou, Xun ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Key Lab Photon Technol Informat, Key Lab Phys Elect & Devices,Minist Educ, Xian 710049, Peoples R China

[2] N Carolina State Univ, Polymer & Color Chem Program, Raleigh, NC 27695 USA

来源：

ORGANIC ELECTRONICS | 2014年 / 15卷 / 07期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Dye-sensitized solar cells; Nanostructure; Counter electrode; Light reflection; Charge transfer characteristic; Surface Plasmon Resonance; CARBON NANOTUBES; PERFORMANCE; FLUORESCENCE; ENHANCEMENT; THICKNESS; EMISSION; GRAPHENE;

D O I：

10.1016/j.orgel.2014.03.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A nanostructure-based Pt counter electrode for dye-sensitized solar cells (DSSCs) is fabricated by assembly of silver nanoparticles on glass substrate and deposition of a thin Pt layer. This typical counter electrode has several unique behaviors such as good conductivity, quasi-uniform undulating morphology and high surface area. Studies indicate that the application of the FTO-free nanostructure-based Pt counter electrode in DSSCs can decrease the charge-transfer resistance of the Pt/electrolyte interface, enlarge the light pathway and enhance the light reabsorption superior to the devices with planar Pt counter electrode. In addition, theoretical analysis and experimental study demonstrate that the hot electrons injection effect caused by Localized Surface Plasmon Resonance effect of silver nanoparticles enhances the charge transport characteristic at the Pt/electrolyte interface, and this SPR effect makes the certain contributions on the enhancement of the photovoltaic performance of DSSCs. Compared to the DSSC with traditional planar counter electrode, the incident photon-to-current conversion efficiency, short-circuit current, and power conversion efficiency of DSSCs with nanoparticulate structure are increased by 1.117 times, 1.156 times, and 1.145 times, respectively; and the final power conversion efficiency (PCE) increases from 6.95% to 7.96%. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：1641 / 1649

页数：9