3 years ago

Synthesis and investigation of triphenylamine-based double branched organic dyes for p-type dye-sensitized solar cells

Chau Thi Thanh Thuy, Ho Phuong, Suresh Thogiti, Jae Hong Kim, Ji Won Lee, Le Quoc Bao

Two double branched organic dyes (T1I and T2I) were synthesized, characterized, and employed as photosensitizers in p-type dye-sensitized solar cells (p-DSSC); we have compared with corresponding single branched dye (TC1) and reference dye P1. The absorbance of the dyes in solution was red shifted and the oxidation potential gradually decreased with increasing the donating ability. It was found that modification from single branched (TC1) to double branched (T1I and T2I) system resulted in increased photocurrent density leading to the higher photovoltaic performances. The charge transporting ability is increased with the introduction of double branching, as evidenced from electrochemical impedance analysis.

Publisher URL: http://www.tandfonline.com/doi/full/10.1080/15421406.2017.1350040

DOI: 10.1080/15421406.2017.1350040

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