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首页> 美国卫生研究院文献>Molecules >Characteristics of Dye-Sensitized Solar Cell Assembled from Modified Chitosan-Based Gel Polymer Electrolytes Incorporated with Potassium Iodide
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Characteristics of Dye-Sensitized Solar Cell Assembled from Modified Chitosan-Based Gel Polymer Electrolytes Incorporated with Potassium Iodide

机译：用碘化钾的改性壳聚糖基凝胶聚合物电解质组装的染料敏化太阳能电池特性

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In the present work, phthaloyl chitosan (PhCh)-based gel polymer electrolytes (GPEs) were prepared using dimethylformamide (DMF) as a solvent, ethyl carbonate (EC) as a co-solvent, and a set of five quaternaries of potassium iodide (KI) as a doping salt, which is a mixed composition of iodine (I2). The prepared GPEs were applied to dye-sensitized solar cells (DSSC) to observe the effectiveness of the electrolyte, using mesoporous TiO2, which was sensitized with N3 dye as the sensitizer. The incorporation of the potassium iodide-based redox couple in a polymer electrolyte is fabricated for dye-sensitized solar cells (DSSCs). The number of compositions was based on the chemical equation, which is 1:1 for KI:I2. The electrical performance of prepared GPE systems have been assessed using electrical impedance spectroscopy (EIS), and dielectric permittivity. The improvement in the ionic conductivity of PhCh-based GPE was observed with the rise of salt concentration, and the maximum ionic conductivity (4.94 × 10−2 S cm−1) was achieved for the 0.0012 mol of KI:I2. The study of dielectric permittivity displays that ions with a high dielectric constant are associated with a high concentration of added ions. Furthermore, the gel polymer electrolyte samples were applied to DSSCs to detect the conversion effectiveness of the electrolytes. For electrolytes containing various content of KI:I2 the highest conversion efficiency (η%) of DSSC obtained was 3.57% with a short circuit current density (Jsc) of 20.33 mA cm−2, open-circuit voltage (Voc) of 0.37 V, fill factor (FF) of 0.47, as well as a conductivity of 2.08 × 10−2 S cm−1.
机译：在本作工作中，使用二甲基甲酰胺（DMF）作为溶剂，作为溶剂，作为共溶剂的乙基碳酸酯（EC）和碘化钾（碘化钾）（ Ki）作为掺杂盐，其是碘的混合组成（I2）。将制备的GPE用于染料敏化的太阳能电池（DSSC）以观察使用介孔TiO 2的电解质的有效性，其用N3染料作为敏化剂敏化。为染料敏化太阳能电池（DSSCs）制造在聚合物电解质中掺入聚合物电解质中的碘化钾的氧化还原耦合。组合物的数量基于化学方程，其为ki：i2为1：1。使用电阻抗光谱（EIS）和介电介电常数评估制备GPE系统的电性能。通过盐浓度的升高观察到基于PHCH的GPE的离子电导率的改善，并为0.0012mol的Ki：I2实现了最大离子电导率（4.94×10-2秒-1）。介电介电常数的研究显示，具有高介电常数的离子与高浓度的添加离子相关。此外，将凝胶聚合物电解质样品应用于DSSCs以检测电解质的转化效果。对于含有各种含量的Ki：I2的电解质：I2，获得的DSSC的最高转化效率（η％）为3.57％，短路电流密度（JSC）为20.33 mA CM-2，开路电压（VOC）为0.37V，填充系数（FF）为0.47，以及2.08×10-2 S CM-1的电导率。

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