Low-temperature growth and blue luminescence of SnO2 nanoblades
Low-temperature growth and blue luminescence of SnO2 nanoblades
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DOI：
10.1063/1.2235925
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发表时间：
2006-07-24
影响因子：
4
通讯作者：
Tsai, Song-Yeu
中科院分区：
文献类型：
--
作者：
Her, Yung-Chiun;Wu, Jer-Yau;Tsai, Song-Yeu
在温度低于100℃的受控水溶液中，在覆盖有100 nm厚的SnO2缓冲层的玻璃衬底上合成了大规模的SnO2纳米棒。根据生长温度的不同，典型的纳米棒的宽度约为100-300 nm，长度可达10微米。其厚度约为几十纳米。透射电子显微镜数据、X射线衍射图和X射线光电子能谱分析证实，所生长的纳米晶具有沿[110]方向生长的金红石型SnO2的相结构。没有检测到其他杂质，如元素锡和锡氧化物。与其他方法制备的SnO2纳米结构中观察到的黄红光不同，在原生SnO2纳米薄膜中观察到了以445 nm为中心的强蓝光，半峰全宽为75 nm。人们认为，生长的SnO2纳米棒产生强烈的蓝色发光是由于在生长过程中引入了与氧有关的缺陷。(C)2006年美国物理研究所。
Large-scale SnO2 nanoblades have been synthesized on a glass substrate covered with a 100-nm-thick SnO2 buffer layer in a controlled aqueous solution at temperatures below 100 degrees C. Typical widths of the nanoblades were about 100-300 nm and the lengths were up to 10 mu m, depending on the growth temperature. The thicknesses were about a few tens of nanometers. Transmission electron microscopy data, x-ray diffraction patterns, and x-ray photoelectron spectroscopy spectral analyses confirmed that the as-grown nanoblades had the phase structure of the rutile form of SnO2 growing along the [110] direction. No other impurities, such as elemental Sn and tin oxides, were detected. An intense blue luminescence centered at a wavelength of 445 nm with a full width at half maximum of 75 nm was observed in the as-grown SnO2 nanoblades, which is different from the yellow-red light emission observed in SnO2 nanostructures prepared by other methods. It is believed that the strong blue luminescence from the as-grown SnO2 nanoblades is attributed to oxygen-related defects that have been introduced during the growth process. (c) 2006 American Institute of Physics.