采用热蒸发法制备得到掺Cd量为3.3at%的ZnO纳米管,室温光致发光谱(PL)显示,由于Cd的掺入,ZnCdO纳米管的紫外近带边发射( UV NBE)从纯ZnO的3.26eV红移到3.20 eV附近.应用基于密度泛函理论研究锯齿型(9,0)ZnMO(M =Cd,Mg)单壁纳米管的电子结构.分析发现Cd掺杂纳米管与薄膜相似,能隙随掺杂量增加逐渐减小,出现红移;而Mg掺杂纳米管则不同,能带变化没有规律性.
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