Solar energy paper index
Engineering tetrazole-anchored azo sensitizers for enhanced charge transfer and photovoltaic performance in dye-sensitized solar cells
One-line summary
A solar energy research paper on Engineering tetrazole-anchored azo sensitizers for enhanced charge transfer and photovoltaic performance in dye-sensitized solar cells.
Engineering notes
Engineering notes will be added by the Power for Solar editorial team.
Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Abstract Herein, we report the design and comprehensive investigation of a series of tetrazole-anchored azo dyes (O1Y-O4Y) to elucidate the role of donor substituents in governing interfacial chargetransfer processes in DSSCs. Combined experimental characterization and DFT/TD-DFT analyses reveal that tetrazole anchoring significantly strengthens electronic coupling with TiO₂, enabling highly favorable electron injection (ΔG inject = -1.34 to -1.39 eV) while effectively suppressing recombination. Among the series, the thioether-substituted O1Y dye delivers superior performance (JSC = 4.59 mA cm -2 , PCE = 1.75%), whereas halogen-substituted analogues exhibit diminished efficiency due to unfavorable energetic alignment and increased reorganization losses. Notably, O1Y achieves a 316% enhancement in efficiency relative to its nitrile-anchored counterpart. These findings establish anchoring-group engineering as a decisive strategy for modulating interfacial energetics and advancing the performance of DSSCs beyond conventional molecular design approaches.
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