• 文献标题:   Improving the performance of dye-sensitized solar cells with TiO2/graphene/TiO2 sandwich structure
  • 文献类型:   Article
  • 作  者:   CHEN LC, HSU CH, CHAN PS, ZHANG XY, HUANG CJ
  • 作者关键词:   graphene, solar cell, sandwich structure, tio2
  • 出版物名称:   NANOSCALE RESEARCH LETTERS
  • ISSN:   1931-7573 EI 1556-276X
  • 通讯作者地址:   Natl Taipei Univ Technol
  • 被引频次:   18
  • DOI:   10.1186/1556-276X-9-380
  • 出版年:   2014

▎ 摘  要

This study investigates the extent to which the TiO2/graphene/TiO2 sandwich structure improves the performance of dye-sensitized solar cells (DSSCs) over that of DSSCs with the traditional structure. Studies have demonstrated that the TiO2/graphene/TiO2 sandwich structure effectively enhances the open circuit voltage (V-oc), short-circuit current density (J(sc)), and photoelectrical conversion efficiency (eta) of DSSCs. The enhanced performance of DSSCs with the sandwich structure can be attributed to an increase in electron transport efficiency and in the absorption of light in the visible range. The DSSC with the sandwich structure in this study exhibited a V-oc of 0.6 V, a high J(sc) of 11.22 mA cm(-2), a fill factor (FF) of 0.58, and a calculated eta of 3.93%, which is 60% higher than that of a DSSC with the traditional structure.