Abstract

Transparent conductive oxide electrodes and specifically SnO₂:F/glass are widely employed substrates in the preparation of optoelectronic devices. This study deals with the surface effect of commercially SnO₂:F/glass electrodes on the properties of ZnO nanowires grown onto them by using an electrochemical method. Four types of commercially SnO₂:F/glass with sheet resistances in the range of 7–15 Ω cm⁻² and roughness from 9 to 39 nm were used. The deposition process of ZnO nanowires was performed with zero, one, and two ZnO seed layers, respectively. The seed layer was grown from an ethanolic solution of zinc acetate as a Zn²⁺ precursor, and further, a thermal treatment was performed. The formation of the nanomaterial was carried out by using the potentiostatic method at − 1 V and until reaching a total charge of − 1.5 C at a temperature of 75 °C. Different densities of nanowires were obtained for each case, with diameters ranging from 30 to 400 nm. The SnO₂:F/glass roughness affects the diameter and alignment of the ZnO nanowires. Measurements of diffusive spectra in the optical range, as well as the determination of polarization properties, show that the seed layer deposition is indispensable to obtain optimal optical quality. The findings here discussed constitute another critical factor to be considered in the synthesis of well-aligned nanowires.

中文翻译：

---

种子层对不同SnO 2：F /玻璃衬底上电化学生长的ZnO纳米线的形态，结构和光学性质的影响

摘要

透明导电氧化物电极，特别是SnO ₂：F /玻璃是在光电器件制备中广泛使用的衬底。这项研究处理商业SnO ₂：F /玻璃电极的表面效应对使用电化学方法生长在其上的ZnO纳米线的性能的影响。使用四种类型的商业SnO ₂：F /玻璃，其薄层电阻在7-15Ωcm ^-2的范围内，粗糙度在9到39 nm之间。分别以零，一层和两层ZnO种子层执行ZnO纳米线的沉积过程。种子层是从醋酸锌的Zn ²⁺乙醇溶液中生长的前体，然后进行热处理。纳米材料的形成通过使用恒电位法在− 1 V下进行，直至在75°C的温度下达到− 1.5 C的总电荷。对于每种情况，获得了不同密度的纳米线，其直径范围为30至400 nm。SnO ₂：F /玻璃粗糙度会影响ZnO纳米线的直径和排列。在光学范围内的扩散光谱的测量以及偏振性质的确定表明，种子层沉积对于获得最佳光学质量是必不可少的。此处讨论的发现构成了合成良好排列的纳米线时要考虑的另一个关键因素。