In this study, the effect of integrating a ZnO:Al (AZO) charge injection layer into dye-sensitized solar cells (DSSCs) is investigated. The AZO charge injection layer was deposited using a low-cost sol-gel deposition method directly onto fluorine-doped tin oxide (FTO) conducting glass just before TiO₂ photoanode coating. The structural and optoelectronic properties of AZO charge injection layer are then investigated as a function of the precursor concentration. The integration of AZO charge injection layer leads to the improvement of power conversion efficiency (PCE) by preventing the electrolyte coming in contact with FTO and improving charge injection from the charge AZO layer. It was found that there is an optimum AZO precursor concentration for charge injection layer deposition and DSSCs fabricated using higher concentration resulted in reduced photovoltaic performance due to reduced light transparency, whilst charge injection layer deposited at lower precursor concentration were found to reduce DSSC performance due to insufficient converage.

在这项研究中，研究了将ZnO：Al（AZO）电荷注入层集成到染料敏化太阳能电池（DSSC）中的效果。使用低成本的溶胶-凝胶沉积法将AZO电荷注入层直接沉积在TiO ₂之前的氟掺杂氧化锡（FTO）导电玻璃上光阳极涂层。然后研究AZO电荷注入层的结构和光电性质与前驱物浓度的关系。AZO电荷注入层的集成通过防止电解质与FTO接触并改善来自电荷AZO层的电荷注入，从而提高了功率转换效率（PCE）。发现对于电荷注入层沉积存在最佳的AZO前体浓度，并且使用较高浓度制备的DSSC由于降低的透光性而导致光伏性能降低，而发现以较低前体浓度沉积的电荷注入层由于以下原因而降低了DSSC性能。聚合度不足。