过渡金属二硫化物及其超晶格的电子结构研究

来源 :第十三届国际凝聚态理论与计算材料学会议(The 13th International Conference on Con | 被引量 : 0次 | 上传用户:lsy5
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  单层过渡金属二硫化物(TMDC)是近年来兴起的重要半导体材料,具有良好的光学和电学性质。与通常的单层材料不同,我们研究了由MoS2和WSe2组成的半导体超晶格的电子结构及其随应力的改变。与单层材料相同,所研究的超晶格具有稳定的直接带隙,且直接带隙可以通过改变超晶格的相对厚度来调制。研究结果显示,MoS2/WSe2超晶格具有良好的红外光电性质。
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  随着纳米科学技术的迅速兴起,量子点开始受到越来越多的关注。通过控制量子点的形状、结构与尺寸就可以调节其能隙,以满足器件设计的不同需要。本文选取MoS2量子点,对其结构