研究目的
To synthesize and investigate the photovoltaic properties of boron β-ketoiminate (BKI) dyes forming a linear donor-π-acceptor structure for use in dye-sensitized solar cells (DSCs).
研究成果
The study successfully synthesized BKI dyes with high hydrolysis resistance and linear molecular structures, leading to effective light absorption–excitation–electron injection in DSCs. A maximum power conversion efficiency of 5.3% was achieved, demonstrating the potential of BKI dyes in solar cell applications.
研究不足
The BKI dyes exhibited a narrower wavelength region of photoelectric conversion in IPCE spectra compared to BDK dyes. Additionally, the photovoltaic characteristic, Jsc value, greatly decreased with the addition of TBP to an electrolyte solution.
1：Experimental Design and Method Selection:
The study involved the synthesis of BKI dyes through a series of chemical reactions including Pd-catalyzed cross-coupling, condensation, and boron complexation. The dyes were characterized using UV/Vis absorption spectroscopy, cyclic voltammetry (CV), and differential pulse voltammetry (DPV).
2：Sample Selection and Data Sources:
The dyes were synthesized from triphenylamine derivatives and characterized in solution and on titanium dioxide (TiO2) substrates.
3：List of Experimental Equipment and Materials:
Instruments used include a Bruker Avance III 400 spectrometer for NMR, JASCO FT/IR-4200 and V-670 spectrometers for IR and UV/Vis spectra, and a BAS ALS1210A electrochemical analyzer for CV and DPV measurements.
4：Experimental Procedures and Operational Workflow:
The dyes were synthesized, characterized, and then applied to TiO2 films to fabricate DSCs. The photovoltaic performance was measured under AM 1.5 solar light.
5：5 solar light.
Data Analysis Methods:
5. Data Analysis Methods: The electrochemical properties were analyzed using CV and DPV, and the photovoltaic performance was evaluated based on current density–voltage characteristics and incident photon-to-current conversion efficiency (IPCE) spectra.
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