日本东北大学宣布,其研究人员开发出了沟道层使用新型碳材料——石墨烯晶体管,导通/截止比达到104以上。石墨烯一般没有带隙,因此即使制成晶体管也无法关闭,导通/截止比非常小。东北大学通过此次的技术开发解决了这一课题,而且还可实现超过当前硅半导体技术的晶体管高集成化。详细介绍该技术的论文已刊登在2012年9月9日发行的学术杂志《NatureNanotechnology》 Japan’s Tohoku University announced that its researchers have developed the channel layer using a new type of carbon material - graphene transistors, on / off ratio of 104 or more. Graphene generally has no bandgap, so it can not be turned off even if transistors are made, and the on / off ratio is very small. Northeastern University through this technology to solve this problem, but also can achieve more than the current silicon semiconductor technology, highly integrated transistors. A paper detailing this technique is published in the journal NatureNanotechnology, published September 9, 2012