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与石墨烯类似,硅烯应用于高表现场效应晶体管的关键在于:在保持高迁移率的前提下打开一个大的带隙.基于密度泛函理论,我们发现:单面吸附碱金属原子的方法可以有效的破坏硅烯的对称性,从而打开带隙.
通过表面吸附调节硅烯的带隙
【摘 要】
：
与石墨烯类似,硅烯应用于高表现场效应晶体管的关键在于:在保持高迁移率的前提下打开一个大的带隙.基于密度泛函理论,我们发现:单面吸附碱金属原子的方法可以有效的破坏硅烯的对称性,从而打开带隙.
【机 构】
：
北京大学物理学院人工微结构和介观物理国家重点实验室 100871;北京大学前沿交叉学科研究院 100871
【出 处】
：
中国物理学会2012年秋季学术会议
【发表日期】
：
2012年9期
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