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Highly Asymmetric Tribenzonaphtho-Condensed Porphyrazinatozinc Complex: An Efficient Near-Infrared Sensitizer for Dye-Sensitized Solar Cells

Authors

  • Lijuan Yu,

    1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China), Fax: (+86) 27-6875-2237
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  • Xiaole Zhou,

    1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China), Fax: (+86) 27-6875-2237
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  • Yinghui Yin,

    1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China), Fax: (+86) 27-6875-2237
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  • Dr. Yuwen Liu,

    1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China), Fax: (+86) 27-6875-2237
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  • Dr. Renjie Li,

    Corresponding author
    1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China), Fax: (+86) 27-6875-2237
    • College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China), Fax: (+86) 27-6875-2237
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  • Prof. Tianyou Peng

    Corresponding author
    1. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China), Fax: (+86) 27-6875-2237
    • College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072 (China), Fax: (+86) 27-6875-2237
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Abstract

Novel, highly asymmetric zinc phthalocyanine (ZnPc) derivatives (Zn-tri-PcNc) containing tribenzonaphtho-condensed porphyrazine with one carboxyl and three tert-butyl (tBu) or n-butoxy (nBuO) peripheral substituents were synthesized by using 6-carboxymethyl-2,3-dicyanonaphthalene and 4-tBu- or nBuO-phthalonitrile as starting agents. The new, highly asymmetric ZnPc containing tBu groups (Zn-tri-PcNc-2b) yielded a 3.56 % conversion efficiency in sensitizing TiO2-based dye-sensitized solar cells (DSSCs) under simulated AM 1.5G solar irradiation (100 mW cm−2), which is higher than that of the nBuO-containing analogue Zn-tri-PcNc-3b (2.20 %). Moreover, Zn-tri-PcNc-2b displays 60.7 % of the maximum incident monochromatic photon-to-current conversion efficiency (IPCE) in the red/near-IR region, which is much higher than that of Zn-tri-PcNc-3b (22.9 %), thus highlighting the potential of Zn-tri-PcNc-2b as a DSSC component.

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