Molecular engineering of D-D-π A type organic dyes incorporating indoloquinoxaline and phenothiazine for highly efficient dye sensitized solar cells

作者：Qian, Xing; Wang, Xiaoying; Shao, Li; Li, Hongmei; Yan, Rucai; Hou, Linxi^*

来源：Journal of Power Sources, 2016, 326: 129-136.

DOI：10.1016/j.jpowsour.2016.06.127

• Dye-sensitized solar cells
• Organic dyes
• Phenothiazine
• Indoloquinoxaline
• D-D-pi A type
• Charge transfer

Four metal-free organic dyes QX05-08 based on indoloquinoxaline and phenothiazine have been successfully designed and synthesized for dye-sensitized solar cells. The D-D-pi-A type dyes QX07 and QX08 consist of an indoloquinoxaline donor, a phenothiazine donor, a cyanoacrylic acid acceptor/anchoring group and a thiophene or furan pi-bridge. Other simple D-pi-A type dyes QX05 and QX06 based on indoloquinoxaline and phenothiazine respectively have also been synthesized for comparison. The D-D-pi-A type dyes QX07 and QX08 present good balanced structures and show excellent photoelectric properties. Especially, the dye QX07 with a thiophene unit as the pi-bridge exhibits the best photovoltaic performances in solar cells. A high power conversion efficiency up to 8.28% with a J(sc) of 15.3 mA cm(-2) and a V-oc of 757 mV have been achieved by the dye 0)107 using an iodine electrolyte under standard conditions.

• 出版日期2016-9-15
• 单位福州大学