Fine-tuning zinc oxide (ZnO) nanostructures using a simple methodology will give benefits in designing efficient optoelectronic devices. In this paper, the effect of zinc acetate dihydrate (ZAD) concentration on the deposition of the ZnO seed layer by drop-casting and the growth of ZnO nanorods (ZnO NRs) was studied. As the concentration of ZAD increases, the more aggregation of ZnO nucleation centers in the seed layer. Growth of ZnO NRs using concentration 0.01 M results in the highest aspect ratio and nanorod density due to the aggregation process resulting in more nucleation sites with smaller grain sizes. X-ray diffraction (XRD) done on the four samples show that 0.001 M concentration demonstrates the highest intensity of vertically aligned (002) ZnO NRs. Photoluminescence (PL) spectra show ZnO NRs grown using 0.01 M ZAD solution exhibits the highest intensity in near band edge (NBE) emission compared to other samples.

使用一种简单的方法对氧化锌（ZnO）纳米结构进行微调将在设计高效的光电器件方面带来好处。本文研究了二水合醋酸锌（ZAD）浓度对通过滴铸法沉积ZnO籽晶层和ZnO纳米棒（ZnO NRs）生长的影响。随着ZAD浓度的增加，种子层中ZnO成核中心的聚集更多。使用浓度为0.01 M的ZnO NRs的生长会导致最大的长径比和纳米棒密度，这是由于聚集过程导致了更多的成核位点和较小的晶粒尺寸。对四个样品进行的X射线衍射（XRD）显示，0.001 M的浓度显示出垂直排列的（002）ZnO NR的最高强度。光致发光（PL）光谱显示使用0生长的ZnO NR。