研究了Ⅲ-Ⅴ族半导体纳米晶表面氧化状态对它们表面活性的影响,并比较了具有不同阳离子的纳米晶体对氮分子吸附能力的差异,对这些现象进行了解释;用XPS、红外光谱等测试手段对样品进行了性质表征.结果表明:当Ⅲ-Ⅴ族半导体纳米晶表面氧化严重时,其表面活性明显降低;含Ga的Ⅲ-Ⅴ族半导体纳米晶对氮分子的吸附作用明显强于含In的纳米晶.这是因为Ga能够与氮分子形成较强的配位键,对氮分子的吸附作用增强.
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