具有高对称性可重构整流的单栅PdSe_(2)/WS_(2)二极管  

Reconfigurable single-gate PdSe_(2)/WS_(2) diode with high symmetry rectification

作　　者：陈天鸿 吴琦 高原 王军转 王肖沐 王欣然 晏善成 施毅 Tianhong Chen;Qi Wu;Yuan Gao;Junzhuan Wang;Xiaomu Wang;Xinran Wang;Shancheng Yan;Yi Shi(School of Electronic Science and Engineering,Nanjing University,Nanjing 210093,China;School of Integrated Circuit Science and Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]School of Electronic Science and Engineering,Nanjing University,Nanjing 210093,China [2]School of Integrated Circuit Science and Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China

出　　处：《Science China Materials》2024年第7期2239-2245,共7页中国科学（材料科学）（英文版）

基　　金：supported by the National Natural Science Foundations of China(62274093,62005119,61991431,62341408 and 61921005);the Excellent Youth Foundation of Jiangsu Scientific Committee(BK20211538)。

摘　　要：二维材料由于其丰富的材料组合和可调节的能带结构,为构建可重构的电子器件提供了绝佳的机会.本文使用PdSe_(2)/WS_(2)范德瓦尔斯平面结构造了具有高对称性p-n/n-p结模式的单栅极可重构二极管.栅极调制的带-带隧穿机制为反向整流提供了与正偏同等的电流,同时器件通过控制双极性的WS_(2)构成同质n-p结实现了高反向整流比.通过栅压调制,器件的p-n/n-p结模式能够形成高度对称,整流比具有1E−04到1E+04的无极调节能力,器件因此显示出高性能的可重构整流功能.我们也基于双模整流功能构建了逻辑反相器.本工作有助于拓展二维材料多功能器件的研究.Two-dimensional(2D)materials offer an excellent opportunity for constructing reconfigurable electronic devices due to their wide range of material combinations and adjustable band structures.In this study,we successfully develop a single-gate controllable reconfigurable diode employing PdSe_(2)/WS_(2) van der Waals heterostructures to form a highly symmetric p-n/n-p junction mode.By utilizing a gatemodulated band-to-band tunneling mechanism,we achieve a reverse bias tunneling current equivalent to the forward bias current of the device.Moreover,we obtain a high reverse rectification ratio by controlling the bipolar WS_(2) to form a homogeneous n-p junction.By modulating the gate voltage,the device’s p-n/n-p junction mode exhibits remarkably symmetric properties,with adjustable rectification ratios ranging from 1E−04 to 1E+04,thus demonstrating its high-performance reconfigurable rectification functionality.Furthermore,a logic inverter is successfully constructed based on the dual-mode rectification ability.This research significantly contributes to the advancement of multifunctional devices utilizing 2D materials.

关 键 词：two-dimensional materials PdSe_(2) van der Waals heterojunction reconfigurable device RECTIFICATION 

分 类 号：TN31[电子电信—物理电子学]