Synthesis of ZnO nanorod and the annealing effect on its photoluminescence property
Synthesis of ZnO nanorod and the annealing effect on its photoluminescence property
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DOI：
10.1016/j.optmat.2005.03.007
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发表时间：
2006-03
影响因子：
3.9
通讯作者：
Lili Wu;Y. Wu;Xiaoru Pan;Fanyuan Kong
中科院分区：
文献类型：
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作者：
Lili Wu;Y. Wu;Xiaoru Pan;Fanyuan Kong
采用水热法制备了单晶氧化锌纳米棒。通过在不同气氛下对纳米棒进行热处理，研究了纳米棒的光学性质。用X射线衍射仪、透射电子显微镜、X射线光电子能谱、傅立叶变换红外光谱、紫外-可见吸收光谱和光致发光光谱对样品进行了表征。所制备的氧化锌纳米棒在325 nm激发下的光致发光光谱有三个带：386 nm处的紫外光发射，468 nm处的蓝光发射和640 nm处的橙色发射。在600°C的氨气中，晶体的荧光光谱在386 nm处有明显的紫外近带边发射，在510 nm处有明显的绿光发射。在空气中对晶体进行退火处理后，晶体的橙色发射大大增强。
Single crystal ZnO nanorod has been prepared by hydrothermal method. Optical properties of the nanorod were studied by annealing the nanorod at different ambiences. The annealed and unannealed samples were characterized by X-ray diffraction (XRD), tansmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR), UV–Vis absorption (UV) spectroscopy and photoluminescence (PL) spectroscopy. The photoluminescence spectra under excitation 325nm for the as-prepared ZnO nanorod show three bands: UV emission at 386nm, blue emission at 468 and orange emission at 640nm. By annealing the crystals in ammonia gas at 600°C, the PL spectra shows obvious UV near band-edge emission at 386nm and a green emission at 510nm. While annealing the crystals in air, the orange emission was greatly enhanced.