双极扩散
材料科学
晶体管
肖特基势垒
光电子学
肖特基二极管
二极管
逆变器
堆积
纳米技术
带隙
电子线路
逻辑门
半导体
电极
电气工程
电压
电子
物理
工程类
核磁共振
量子力学
作者
Guangqi Zhang,Gaotian Lu,Xuanzhang Li,Zhen Mei,Liang Liang,Shoushan Fan,Qunqing Li,Yang Wei
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-02-27
卷期号:17 (5): 4564-4573
被引量:5
标识
DOI:10.1021/acsnano.2c10593
摘要
Reconfigurable logic circuits implemented by two-dimensional (2D) ambipolar semiconductors provide a prospective solution for the post-Moore era. It is still a challenge for ambipolar nanomaterials to realize reconfigurable polarity control and rectification with a simplified device structure. Here, an air-gap barristor based on an asymmetric stacking sequence of the electrode contacts was developed to resolve these issues. For the 2D ambipolar channel of WSe2, the barristor can not only be reconfigured as an n- or p-type unipolar transistor but also work as a switchable diode. The air gap around the bottom electrode dominates the reconfigurable behaviors by widening the Schottky barrier here, thus blocking the injection of both electrons and holes. The electrical performances can be improved by optimizing the electrode materials, which achieve an on/off ratio of 104 for the transistor and a rectifying ratio of 105 for the diode. A complementary inverter and a switchable AND/OR logic gate were constructed by using the air-gap barristors as building blocks. This work provides an efficient approach with great potential for low-dimensional reconfigurable electronics.
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