Effects of Potential Deposition on the Parameters of ZnO dye-sensitized Solar Cells

Dye-sensitized solar cells (DSSCs) are a feasible option for photovoltaic energy. Zinc oxide is an n-type semiconductor employed as photoanode on DSSCs. ZnO thin films were electrodeposited to study the effects of different potentials applied during deposition. SEM images, XRD and UV-Vis analysis were conducted to reveal the morphologic, structural and optical properties of the films at three potentials. DSSCs were assembled and the photovoltaic parameters were obtained through J-V plots. DSSC with 0.031% of efficiency was demonstrated at -1.4 V of deposition potential.

染料敏化太阳能电池（Dye-sensitized solar cells, DSSCs）是光伏能源领域的可行技术方案。氧化锌（Zinc oxide）作为n型半导体，被用作染料敏化太阳能电池的光阳极材料。本研究通过电沉积法制备氧化锌薄膜，以探究沉积过程中施加的不同电位对薄膜性能的影响。通过扫描电子显微镜（SEM）成像、X射线衍射（XRD）以及紫外-可见光谱（UV-Vis）分析，揭示了三种沉积电位下薄膜的形貌、结构与光学特性。随后组装染料敏化太阳能电池，并通过电流-电压（J-V）曲线获取其光伏性能参数。实验结果表明，当沉积电位为-1.4 V时，制备的染料敏化太阳能电池的光电转换效率可达0.031%。