A Hydroxamic Acid Anchoring Group for Durable Dye-Sensitized Solar Cells Incorporating a Cobalt Redox Shuttle

作者：Higashino Tomohiro; Kurumisawa Yuma; Cai Ning; Fujimori Yamato; Tsuji Yukihiro; Nimura Shimpei; Packwood Daniel M; Park Jaehong; Imahori Hiroshi

来源：Chemsuschem, 2017, 10(17): 3347-3351.

DOI：10.1002/cssc.201701157

• anchoring group
• cobalt
• dye-sensitized solar cells
• hydroxamic acid
• porphyrins

A hydroxamic acid group has been employed for the first time as an anchoring group for cobalt-based dye-sensitized solar cells (DSSCs). The porphyrin dye YD2-o-C8HA including a hydroxamic acid anchoring group exhibited a power conversion efficiency() of 6.4%, which is close to that of YD2-o-C8, a representative porphyrin dye incorporating a conventional carboxylic acid. More importantly, YD2-o-C8HA was found to be superior to YD2-o-C8 in terms of both binding ability to TiO2 and durability of cobalt-based DSSCs. Notably, YD2-o-C8HA photocells revealed a higher -value(4.1%) than YD2-o-C8(2.8%) after 500h illumination. These results suggest that the hydroxamic acid can be used for DSSCs with other transition-metal-based redox shuttle to ensure high cell durability as well as excellent photovoltaic performance.

• 出版日期2017-9-11