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首页> 外文期刊>Optical Materials >Improved long-term stability of dye-sensitized solar cell employing PMA/PVAc based gel polymer electrolyte
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Improved long-term stability of dye-sensitized solar cell employing PMA/PVAc based gel polymer electrolyte

机译：使用基于PMA / PVAc的凝胶聚合物电解质改善染料敏化太阳能电池的长期稳定性

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摘要

Gel polymer electrolytes based on blends of poly(methyl acrylate) (PMA) and poly(vinyl acetate) (PVAc) were prepared using tetrapropylammonium iodide (TPAI) salt, 1-butyl-3-methylimidazolium iodide (BMII) ionic liquid and ethylene carbonate (EC) plasticizer. The mass fraction of EC, W-EC was varied while the masses of the other components were kept constant in order to study the dependence of dye-sensitized solar cell (DSSC) performance on EC concentration. Incorporation of EC in PMA/PVAc-TPAI-BMII has enhanced the efficiency of the DSSC. The efficiency enhancement is due to the increase in short circuit current density, J(SC), arising from the conductivity enhancement brought about by the EC. A DSSC with TPAI-BMII-EC liquid electrolyte was fabricated and its photovoltaic and stability performance were investigated and compared with DSSC with PMA/PVAcTPAI-BMII-EC gel electrolyte. PMA/PVAc decreases the J, from 27.87 to 22.91 mA cm(-2) and efficiency, eta from 12.28 to 9.67%. Linear sweep voltammetry studies reveal that PMA/PVAc decreases the ion motion in the electrolyte. Although PMA/PVAc deteriorates the performance of DSSC, but it improves the stability performance of DSSC by suppressing the recombination loss as evidenced from the increase in charge transfer resistance at the TiO2 electrode and longer electron recombination lifetime.
机译：使用四丙基碘化铵（TPAI）盐，1-丁基-3-甲基碘化咪唑鎓（BMII）离子液体和碳酸亚乙酯制备基于聚丙烯酸甲酯（PMA）和聚乙酸乙烯酯（PVAc）共混物的凝胶聚合物电解质（EC）增塑剂。为了研究染料敏化太阳能电池（DSSC）性能对EC浓度的依赖性，改变了EC，W-EC的质量分数，同时使其他组分的质量保持恒定。 EC在PMA / PVAc-TPAI-BMII中的合并提高了DSSC的效率。效率的提高是由于EC带来的电导率提高引起的短路电流密度J（SC）的增加。制备了带有TPAI-BMII-EC液体电解质的DSSC，并研究了其光电性能和稳定性，并与带有PMA / PVAcTPAI-BMII-EC凝胶电解质的DSSC进行了比较。 PMA / PVAc将J从27.87降低到22.91 mA cm（-2），效率eta从12.28降低到9.67％。线性扫描伏安法研究表明，PMA / PVAc会降低电解质中的离子运动。虽然PMA / PVAc会降低DSSC的性能，但通过抑制重组损失可以改善DSSC的稳定性，这是由TiO2电极上电荷转移电阻的增加和更长的电子重组寿命所证明的。

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