Twist angle-dependent conductivities across MoS(2)/graphene heterojunctions.
Twist angle-dependent conductivities across MoS(2)/graphene heterojunctions.
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MoS2/石墨烯异质结的扭转角度依赖性电导率
DOI:
10.1038/s41467-018-06555-w
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发表时间:
2018-10-04
影响因子:
16.6
通讯作者:
Zhang G
中科院分区:
文献类型:
--
作者:
Liao M;Wu ZW;Du L;Zhang T;Wei Z;Zhu J;Yu H;Tang J;Gu L;Xing Y;Yang R;Shi D;Yao Y;Zhang G
Van der Waals heterostructures stacked from different two-dimensional materials offer a unique platform for addressing many fundamental physics and construction of advanced devices. Twist angle between the two individual layers plays a crucial role in tuning the heterostructure properties. Here we report the experimental investigation of the twist angle-dependent conductivities in MoS2/graphene van der Waals heterojunctions. We found that the vertical conductivity of the heterojunction can be tuned by ∼5 times under different twist configurations, and the highest/lowest conductivity occurs at a twist angle of 0°/30°. Density functional theory simulations suggest that this conductivity change originates from the transmission coefficient difference in the heterojunctions with different twist angles. Our work provides a guidance in using the MoS2/graphene heterojunction for electronics, especially on reducing the contact resistance in MoS2 devices as well as other TMDCs devices contacted by graphene. Twisting vertically stacked individual layers of two-dimensional materials can trigger exciting fundamental physics and advanced electronic device applications. Here, the authors report five times enhancement in vertical heterojunction conductivity on rotating MoS2 over graphene.
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影响因子:
38.3
作者:
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通讯作者:
Koppens, F. H. L.
影响因子:
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作者:
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影响因子:
17.1
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通讯作者:
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