研究目的
Investigating the possibility of producing all solid layers of a dye-sensitized solar cell (DSSC) by electrospinning, using non-toxic and inexpensive materials for environmentally friendly solar energy harvesting.
研究成果
The study successfully demonstrated the feasibility of producing all solid layers of a DSSC by electrospinning, using environmentally friendly materials. While the efficiency is currently lower than traditional methods, the approach avoids common issues like short-circuits in fiber-based DSSCs and opens several avenues for future optimization to enhance performance.
研究不足
The efficiency of the fully electrospun DSSC is lower than glass-based cells, attributed to incomplete graphite coverage on the counter electrode and lack of dye adsorption on TiO2. The study suggests further optimization is needed to improve efficiency and stability.
1:Experimental Design and Method Selection:
The study involved electrospinning all solid layers of a DSSC, including the counter electrode with a graphite catalyst, a thin nonconductive barrier layer, and the front electrode with semiconducting TiO2 from a polymer solution dyed with natural dyes. Both electrodes were coated with a conductive polymer before filling the system with a fluid electrolyte.
2:Sample Selection and Data Sources:
The samples included electrospun nanofiber mats for the DSSC layers, with reference cells prepared using glass electrodes for comparison.
3:List of Experimental Equipment and Materials:
Electrospinning machine 'Nanospider Lab', confocal laser scanning microscope (CLSM) VK-8710, Keithley 2450 sourcemeter, solar simulator LS0500 with AM
4:5 G spectrum, materials included polyacrylonitrile (PAN), graphite powder, dimethyl sulfoxide (DMSO), TiO2 nanopowder, natural dyes, and PEDOT:
PSS.
5:Experimental Procedures and Operational Workflow:
Electrospinning was performed under specific conditions, followed by dip-coating in PEDOT:PSS, drying, assembly of the DSSC, and filling with electrolyte. Electrical characteristics were measured under simulated sunlight.
6:Data Analysis Methods:
Current-voltage characteristics were measured and analyzed to determine the efficiency of the DSSCs.
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