期刊
POLYMERS
卷 12, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/polym12030516
关键词
phthaloyl starch; hydroxyethyl cellulose; rheology; quasi-solid electrolyte; dye-sensitized solar cell
资金
- Deanship of Scientific Research at King Abdulaziz University [RG-40-135-40]
- Modal Insan Postdoctoral Fellowship at Universiti Kebangsaan Malaysia [MI 2019-014]
This work is a pioneer attempt to fabricate quasi-solid dye-sensitized solar cell (QSDDSC) based on organosoluble starch derivative. Rheological characterizations of the PhSt-HEC blend based gels exhibited viscoelastic properties favorable for electrolyte fabrication. From amplitude sweep and tack test analyses, it was evident that the inclusion of LiI improved the rigidity and tack property of the gels. On the other hand, the opposite was true for TPAI based gels, which resulted in less rigid and tacky electrolytes. The crystallinity of the gels was found to decline with increasing amount of salt in both systems. The highest photoconversion efficiency of 3.94% was recorded upon addition of 12.5 wt % TPAI and this value is one of the highest DSSC performance recorded for starch based electrolytes. From electrochemical impedance spectroscopy (EIS), it is deduced that the steric hindrance imposed by bulky cations aids in hindering recombination between photoanode and electrolyte.
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