研究目的
Investigating the photovoltaic performance of porphyrin-based dye-sensitized solar cells with binary ionic liquid electrolytes.
研究成果
The study demonstrated that lower viscosity binary ionic liquid electrolytes with higher diffusion coefficients of triiodide ions enhance the photovoltaic performance of DSCs. The best performing device achieved a power conversion efficiency of 6.1% under standard AM 1.5G illuminations at 100 mW cm-2 with an opaque TiO2 film.
研究不足
The study is limited by the mass transport problems in the ionic liquid electrolytes under full sun intensity, which affects the photocurrent linearity. The influence of cations on the photovoltaic performance is not extensively discussed.
1：Experimental Design and Method Selection:
The study involved the fabrication of dye-sensitized solar cells (DSCs) using a green porphyrin sensitizer Y350 and binary ionic liquid electrolytes. The electrolytes were mixtures of various ionic liquids to study their effect on the photovoltaic performance.
2：Sample Selection and Data Sources:
The Y350 dye was synthesized as reported earlier, and ionic liquids were purchased from commercial sources.
3：List of Experimental Equipment and Materials:
Materials included Y350 dye, ionic liquids, TiO2 films, and FTO conducting glass. Equipment included a solar simulator, Keithley model 2400 digital source meter, and an IPCE test system.
4：Experimental Procedures and Operational Workflow:
DSCs were fabricated by sensitizing TiO2 films with Y350 dye, preparing binary ionic liquid electrolytes, and assembling the cells with a platinized FTO counter electrode. Photovoltaic performance was measured under standard AM
5：5G illuminations. Data Analysis Methods:
The photovoltaic parameters were analyzed, and transient photovoltage and photocurrent decay measurements were performed to understand the device performance.
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