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- W2053219953 abstract "A novel hyperbranched zinc phthalocyanine dye, i.e. HBZnPc-COOH, was synthesized, characterized, and applied into dye-sensitized solar cells (DSSCs) as TiO<sub>2</sub> sensitizer. UV-visible absorption, steady-state fluorescence, femtosecond time-resolved fluorescence, cyclic voltammetry, current–voltage characteristics, and photoelectrical properties of the active material/device were investigated. The utilization of hyperbranched structure was proved to be able to solve the aggregation issue of phthalocyanine dyes on TiO<sub>2</sub> surface which has been widely considered as one of the key limiting issues that severely lower the efficiencies of phthalocyanine dye sensitized solar cells. With appropriate highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels, HBZnPc-COOH exhibited efficient and ultrafast multi-phasic electron injection from both the Soret band and Q band to the conduction band of TiO<sub>2</sub>, leading to a solar cell power conversion efficiency of 1.15% and a high incident photon to current conversion efficiency of 66.7% at 670 nm." @default.
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- W2053219953 date "2012-09-13" @default.
- W2053219953 modified "2023-09-26" @default.
- W2053219953 title "Ultrafast multi-phasic electron injection in efficient non-aggregated hyperbranched zinc phthalocyanine sensitized solar cells" @default.
- W2053219953 doi "https://doi.org/10.1117/12.933940" @default.
- W2053219953 hasPublicationYear "2012" @default.
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