Development of High Performance Dye-sensitized Solar Cells by Organosilicon Concept

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03848
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Energy-related chemistry
• Research Institution: Gunma University
• Principal Investigator: Hanaya Minoru 群馬大学, 大学院理工学府, 教授 (50228516)
• Co-Investigator(Kenkyū-buntansha): 藤沢 潤一 群馬大学, 大学院理工学府, 准教授 (20342842)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 色素増感太陽電池 / アルコキシシラン色素 / 光起電圧 / 光電変換効率

Outline of Final Research Achievements

Dye-sensitized solar cells (DSSCs) have been investigated actively as practical photovoltaic cells of the next generation. We focused our attention on the potential of alkoxysilyl dyes as sensitizing dyes for DSSCs based on their high bonding ability to metal-oxide surfaces by forming firm Si-O-metal bonds, and developed a new alkoxysilyl coumarin dye with the help of MO calculations. The cell using the dye exhibited an open-circuit photovoltage over 1.4 V, which is the highest value reported so far for DSSCs. We also found that the cell with the TiO2 electrode co-adsorbed with an alkoxysilyl carbazole dye and a triphenyl amine carboxy dye shows the collaborative sensitization effect, and succeeded to develop the cell showing the light-to-electric conversion efficiency over 14%.

Free Research Field

物性物理化学、無機-有機複合材料科学