电子能量损失谱确定ZnO纳米带的极性

摘要

介绍了电子能量损失谱确定半导体材料极性的一般原理和方法,并用该方法对具有中脊线的ZnO纳米薄带进行极性表征.高分辨电子显微分析和电子能量损失谱分析表明ZnO纳米带在中脊处存在堆垛层错,沿中脊线指向两个边缘都是Zn极性.%The general principle and technique of polarity determination using electron energy-loss spectroscopy were introduced, and the polarity of ZnO nanobelt with a midline was investigated. Examinations of high-resolution transmission electron microscopy and electron energy-loss spectroscopy show that there exist stacking faults at the midline and the nanobelts are Zn terminated at both sides.