Development of Type-II Dye-Sensitized Solar Cells Based on a New-type D-pi-A Fluorescent Dyes

2014 Fiscal Year Final Research Report

• Project/Area Number: 24550225
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Organic industrial materials
• Research Institution: Hiroshima University
• Principal Investigator: OOYAMA Yousuke 広島大学, 工学(系)研究科(研究院), 准教授 (60403581)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 蛍光性色素 / 光電変換 / 色素増感太陽電池 / 光増感 / 酸化チタン電極

Outline of Final Research Achievements

In order to develop high performance dye-sensitized solar cells (DSSC), we have designed and developed a new-type of D-π-A dye sensitizers with pyridyl group as an electron-withdrawing-injecting anchoring group, which can adsorb onto TiO2 electrode through the formation of coordinate bonding between the pyridyl group of the dye and the Lewis acid site (exposed Tin+ cations) on the TiO2 surface. Moreover, D-π-Cat dyes with a diphenylamine moiety as electron-donating group, a catechol (Cat) unit as anchoring group and fluorene or carbazole as π-conjugated system have been designed and developed. We fabricated the DSSCs based on these dyes. This work revealed the electron injection mechanism from the dyes to the conduction band of the TiO2 electrode and the photovoltaic performances of DSSCs based on these dyes.

Free Research Field

化学