A Novel Alkoxysilyl Azobenzene Dye Photosensitizer with Alkylamino Group for Dye-Sensitized Solar Cells

作者：Kakiage Kenji; Aoyama Yohei; Yamamura Masaki; Yano Toru; Unno Masafumi; Kyomen Toru; Hanaya Minoru^*

来源：Silicon, 2014, 6(2): 123-127.

DOI：10.1007/s12633-013-9174-y

• Alkoxysilyl azobenzene
• Aminoazobenzene
• Alkoxysilyl dye
• Photosensitizer
• Dye-sensitized solar cell

A newly designed alkoxysilyl azobenzene dye with alkylamino group, 4-diethoxyphenylsilyl-4%26apos;-dimethylaminoazobenzene, was synthesized and examined as the photosensitizer for a dye-sensitized solar cell (DSSC). The novel azobenzene dye exhibited a strong absorption band in the visible region, and the solar cell using the dye as the sensitizer showed an incident monochromatic photon-to-current conversion efficiency (IPCE) value of 66 % at 440 nm and a light-to-electric energy conversion efficiency of 2.2 % under simulated sunlight irradiation of AM-1.5G one sun condition. The energy conversion efficiency obtained here is the highest value among those reported so far for azobenzene-sensitized solar cells, indicating the potential of alkoxysilyl dyes as photosensitizers for DSSCs.

• 出版日期2014-4