Lead ion was incorporated into TiO layers prepared on an F-doped tin oxide (FTO) substrate. The resulting electrodes (Pb-TiO/FTO) were sensitized with N719 dye and put to use in dye-sensitized solar cells (DSCs). Owing to the electrostatic attraction between the positively charged TiO and the carboxylate anions (–COO) in the N719 dye, more dye was adsorbed into the Pb-TiO/FTO, which required only 2 h for sensitization, than in a reference TiO/FTO electrode that was sensitized for 8 h. The power conversion efficiency of a DSC with the Pb-TiO/FTO rose to 10.01 % over the efficiency (9.29 %) of the reference device. It was found that the increased dye adsorption in the Pb-TiO/FTO allowed the cells to more efficiently harvest light and collect electrons, resulting in a higher short-circuit current in the DSC. The larger amount of dye also induced a higher open-circuit voltage in the cell by increasing the total number of photoinjected electrons and prolonging their lifetime.

中文翻译：

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TiO2表面应用铅离子对太阳能电池染料吸附率和光伏性能的影响


将铅离子掺入在掺氟氧化锡（FTO）基板上制备的 TiO2 层中。所得电极 (Pb-TiO/FTO) 用 N719 染料敏化并用于染料敏化太阳能电池 (DSC)。由于 N719 染料中带正电的 TiO2 和羧酸根阴离子 (-COO) 之间的静电引力，与参考 TiO2/FTO 相比，更多的染料被吸附到 Pb-TiO2/FTO 中，仅需要 2 小时即可敏化电极敏化8小时。使用 Pb-TiO/FTO 的 DSC 的功率转换效率比参考器件的效率 (9.29%) 提高到 10.01%。研究发现，Pb-TiO/FTO 中染料吸附的增加使电池能够更有效地收集光和收集电子，从而导致 DSC 中的短路电流更高。大量的染料还通过增加光注入电子的总数并延长其寿命，在电池中诱导出更高的开路电压。