All-carbon sp-sp2 hybrid structures: geometrical properties, current rectification, and current amplification.
All-carbon sp-sp2 hybrid structures: geometrical properties, current rectification, and current amplification.
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DOI:
10.1038/srep02575
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发表时间:
2013
影响因子:
4.6
通讯作者:
Tang, Guiping
中科院分区:
文献类型:
--
作者:
Zhang, Zhenhua;Zhang, Junjun;Kwong, Gordon;Li, Ji;Fan, Zhiqiang;Deng, Xiaoqing;Tang, Guiping
All-carbon sp-sp2 hybrid structures comprised of a zigzag-edged trigonal graphene (ZTG)and carbon chains are proposed and constructed as nanojunctions. It has been found that such simple hybrid structures possess very intriguing propertiesapp:addword:intriguing. The high-performance rectifying behaviors similar to macroscopic p-n junction diodes, such as a nearly linear positive-bias I-V curve (metallic behavior), a very small leakage current under negative bias (insulating behavior), a rather low threshold voltage, and a large bias region contributed to a rectification, can be predicted. And also, a transistor can be built by such a hybrid structure, which can show an extremely high current amplification. This is because a sp-hybrid carbon chain has a special electronic structure which can limit the electronic resonant tunneling of the ZTG to a unique and favorable situation. These results suggest that these hybrid structures might promise importantly potential applications for developing nano-scale integrated circuits.
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