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石墨烯+六方氮化硼=新的晶体管

處理器/主機板/顯示卡/記憶體


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Old 27-05-2013, 03:05 PM
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Default 石墨烯+六方氮化硼=新的晶体管

石墨烯(Graphene)自十几年前诞生以来就一直让科学家们着迷。这种仅仅一个原子厚度的碳元素材料拥有出色的电子特性、强度、超轻重量,用途也不断拓宽,但是如何为其植入能隙(band gap/半导体或是绝缘体的价带顶端至传导带底端的能量差距),从而制造晶体管和其它电子设备,却始终让科研人员束手无策。现在,麻省理工学院(MIT)的研究人员们在这方面取得了重大突破,甚至有望改变石墨烯物理学的一些理论预测。他们引入了另一种单原子厚度、属性和石墨烯类似的材料六方氮化硼(hexagonal boron nitride),并将一层石墨烯置于其上,最终得到的混合材料既有石墨烯的导电特性,还终于具备了建造晶体管所必需的能隙。MIT物理系助教Pablo Jarillo-Herrero评论说:“通过综合两种材料,我们得到了属性异于二者的混合材料。石墨烯是极好的导体,六方氮化硼则是很好的绝缘体
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