Optical properties of SnO2 nanoparticles and nanorods synthesized by solvothermal process
Optical properties of SnO2 nanoparticles and nanorods synthesized by solvothermal process
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DOI：
10.1063/1.2200449
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发表时间：
2006-06-01
影响因子：
3.2
通讯作者：
Chaudhuri, Subhadra
中科院分区：
文献类型：
--
作者：
Das, Soumen;Kar, Soumitra;Chaudhuri, Subhadra
采用溶剂热法制备了纯相金红石相SnO 2纳米粒子和纳米棒。纳米颗粒的直径在5-10 nm范围内，而纳米棒的长度和宽度分别在100-200 nm和50 nm左右。通过X射线衍射和透射电子显微镜测定了SnO 2纳米晶的晶体结构、形貌和尺寸。通过傅里叶变换红外光谱、光吸收、光致发光和拉曼光谱研究了产物的光学性质。由于量子限制，观察到纳米晶体的光学带隙的尺寸依赖性蓝移。光致发光光谱显示宽的紫外发射。研究了SnO 2纳米晶的粒径和形貌对拉曼光谱振动带的影响。(c)2006年，美国物理学会。
Phase pure rutile SnO2 nanoparticles and nanorods were prepared by solvothermal technique. The diameters of the nanoparticles were in the range of 5-10 nm while the length and width of the nanorods were within 100-200 nm and similar to 50 nm, respectively. The crystal structure, morphology, and sizes of the SnO2 nanocrystals were determined by x-ray diffraction and transmission electron microscopy. Optical properties of the products were explored by Fourier transform infrared spectroscopy, optical absorption, photoluminescence, and Raman studies. Size dependent blueshift of the optical band gap of the nanocrystals was observed due to quantum confinement. The photoluminescence spectra showed broad UV emission. The influence of the particle size and the morphology of the SnO2 nanocrystals on the vibration band in the Raman scattering was studied. (c) 2006 American Institute of Physics.