Modification at Lattice Scale for an Optimized Optical Response of Al<sub>x</sub>(ZnO)<sub>1-x</sub>Nanostructures

• 作者: Avanish Kumar Srivastava Jai Shankar Tawale Karuppanan Senthil Melepurath Deepa Ruchi Gakhar
• 来源期刊: 纳米科学与工程(英文)
• 学科: 医学
• 关键词: Electron Microscopy NANOSTRUCTURES ZNO PHOTOLUMINESCENCE
• 年，卷（期）: 2011,（1）
• 页码范围: 15-19
• 页数: 5页
• 分类号: R73

摘要

We report the systematic changes of nano-scaled features and optical properties in a promising transparent oxide material, namely, Alx (x = 0, 1, 2 and 5%) doped ZnO1-x (AZO). Electron microscopy investigations revealed the alterations at lattice scale depending on the presence of Al-content in ZnO nanostructures. Lattice spacings of 0.26 and 0.28 nm oriented along the (0002) and (10 0) planes, respectively, were attributed to euhedral-and facetted-structures of hexagonal-ZnO. The AZO samples were further characterized by XRD, SEM, UV-vis spectrophotometry, Raman spectroscopy and photoluminescence studies. It has been shown that at a dopant concentration of 2%Al in ZnO, an optimal balance could be achieved between microstructure and optical properties.