Kaphle Amrit, Echeverria Elena, Mcllroy David N, Roberts Kenneth, Hari Parameswar
Department of Physics and Engineering Physics, University of Tulsa, Tulsa, Oklahoma 74104, USA.
Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078-3072, USA.
J Nanosci Nanotechnol. 2019 Jul 1;19(7):3893-3904. doi: 10.1166/jnn.2019.16491.
Thermo-optical and structural properties of cobalt-doped zinc oxide (ZnO) nanorods grown by chemical bath deposition were investigated. The average nanorods diameter was found to increase with cobalt doping. X-ray diffraction (XRD), Raman, and Fourier Transform Infrared (FTIR) analysis confirm the substitution of cobalt into ZnO lattice without forming any impurities at higher doping and preserving the hexagonal wurtzite structure. Variations in the absorption spectrum, band gap, photoluminescence, electronic structure by X-ray photoelectron spectroscopy (XPS), and index of refraction were analyzed at different cobalt doping levels and annealing temperatures. The thermooptic coefficient of ZnO nanorods was extracted and explained regarding cobalt doping. We will also discuss the nature of cobalt incorporation in ZnO nanorods at various doping levels.
研究了通过化学浴沉积法生长的钴掺杂氧化锌（ZnO）纳米棒的热光和结构性质。发现平均纳米棒直径随钴掺杂量增加而增大。X射线衍射（XRD）、拉曼光谱和傅里叶变换红外（FTIR）分析证实，在较高掺杂量下钴取代了ZnO晶格中的原子，且未形成任何杂质，同时保留了六方纤锌矿结构。分析了不同钴掺杂水平和退火温度下吸收光谱、带隙、光致发光、X射线光电子能谱（XPS）表征的电子结构以及折射率的变化。提取了ZnO纳米棒的热光系数，并对钴掺杂情况进行了解释。我们还将讨论不同掺杂水平下钴在ZnO纳米棒中的掺入性质。
