Triphenylamine derivatives and the lithium-ion capture of [3.3]cyclophane used in organic dye-sensitized solar cells

Yu Hsiang Chiu, Masahiko Shibahara, Rui Yu Huang, Motonori Watanabe, Zhong Sheng Wang, Yu Jen Hsiao, Bo Fong Chang, Ting Hsuan Chiang, Yuan Jay Chang

    Research output: Contribution to journalArticlepeer-review

    8 Citations (Scopus)

    Abstract

    Four novel organic dyes (H-1, H-2, H-3, H-4) containing phenyl-thiophenyl-thiophenyl as a bridge unit were synthesized and effectively used for the fabrication of dye-sensitized solar cells (DSSCs). In both compounds, a triarylamine moiety and cyanoacrylic acid function as an electron donor and an electron acceptor, respectively. H-1 and H-3 exhibited high interaction between lithium ions and [3.3]paracyclophane, resulting in low charge recombination and high open-circuit voltage (Voc). When deoxycholic acid was used as a coadsorbent, the optimal device performance was observed in H-3, involving a short-circuit current of 16.96 mA cm−2, a Voc of 705 mV, and a fill factor of 0.64, which correspond to an overall conversion efficiency of 7.55%. Photophysical properties were analyzed using a time-dependent density functional theory model and the B3LYP functional. Furthermore, the electronic characteristics of the DSSCs were determined using electrochemical impedance spectroscopy and controlled intensity-modulated photospectroscopy.

    Original languageEnglish
    Pages (from-to)761-772
    Number of pages12
    JournalDyes and Pigments
    Volume136
    DOIs
    Publication statusPublished - Jan 1 2017

    All Science Journal Classification (ASJC) codes

    • Chemical Engineering(all)
    • Process Chemistry and Technology

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