In this work, ZnO nanosheet-nanowire morphology tuning could be achieved by simply changing the NaOH concentration in a low-temperature chemical bath. Our method produces nano/microstructures ranging from nanorods/nanowires with a wide range of diameters (~20 nm-4 µm) and aspect ratios (~1–20) to nanosheets with different dimensions. Photoluminescence spectra were dominated by violet emission attributed to Zn interstitial related defects forming during the growth. Focusing on the specific surface area of the final product, 30–40 nm-thick nanosheets showed the best J-V performance and transport dynamics when implemented in dye-sensitized solar cells.

在这项工作中，可以通过简单地改变低温化学浴中的 NaOH 浓度来实现 ZnO 纳米片-纳米线形态的调整。我们的方法产生的纳米/微结构范围从具有广泛直径 (~20 nm-4 µm) 和纵横比 (~1-20) 的纳米棒/纳米线到具有不同尺寸的纳米片。光致发光光谱以紫光发射为主，这归因于生长过程中形成的 Zn 间隙相关缺陷。关注最终产品的比表面积，当在染料敏化太阳能电池中实施时，30-40 nm 厚的纳米片显示出最佳的 JV 性能和传输动力学。