Novel organic sensitizer based on directly linked oligothiophenes to donor nitrogen atom for efficient dye-sensitized solar cells

作者：Gupta Akhil^*; Kelson Melissa; Armel Vanessa; Xiang Wanchun; Bilic Ante; Bhosale Sheshanath V

来源：Synthetic Metals, 2014, 193: 102-109.

DOI：10.1016/j.synthmet.2014.04.005

• Bridged donor-pi-acceptor
• Dye-sensitized solar cells
• Directly linking oligothiophenes
• Cobalt-mediated electrolyte

Through the embodiment of direct linkage of oligothiophenes to the nitrogen atom of a donor amine in the bridged donor-acceptor module, a novel and efficient organic sensitizer (AG3) has been designed, synthesized and applied in dye-sensitized solar cells. AG3 contained an electron donating (diphenylamine) and an electron accepting (cyanoacrylic acid) functionality linked through an elongated oligothiophene pi-spacer. The target sensitizer was successfully synthesized, found to be highly soluble in common organic solvents, showed intense spectral response when compared with fewer thiophene analogue, and afforded 5.9%, 4.3% and 5.2% solar-to-energy conversion efficiencies with solvent-based, ionic liquid and cobalt-mediated electrolytes, respectively, when tested under irradiation of 100 mW cm(-2) air mass 1.5 global (AM1.5G) sunlight.

• 出版日期2014-7
• 单位CSIRO