AI 中文总结
该研究开发双栅范德华器件，实现固定Li+密度下调控离子传输速率，构建二维离子传输控制空间，制成高开关比混合离子-电子晶体管，为储能和离子计算提供新方向。
AI 中文摘要
晶体主体中的离子传输受施加电位调控，该电位会同时设定离子分布与传输速率，将操作限制在一维控制空间。本文中，我们表明双栅范德华器件中的Li+离子传输速率可在系统处于固定离子密度态时被调制。我们测量了六方氮化硼与石墨烯或MoS2之间范德华界面处的离子电流，同时监测面内电子响应。离子电流表现出明显的滞回特性，其平台对应由电子电荷平衡的离散离子密度态，而独立可调的电化学势降则控制离子传输速率。该器件可维持超过1000次开关循环，且可作为混合离子-电子晶体管发挥作用，具备逻辑运算与存储保持功能，开/关比超过两个数量级。本研究证明了层状材料中离子传输的二维控制空间，为储能与基于离子的计算开辟了新的操作区间。
英文摘要
Ion transport in crystalline hosts is controlled by an applied potential that simultaneously sets ionic distribution and transport rate, restricting operation to a one-dimensional control space. Here we show that the transport rate of Li+ ions in double-gated van der Waals devices can be modulated while the system occupies fixed ionic-density states. We measure the ionic current along the van der Waals interfaces between hexagonal boron nitride and graphene or MoS2 while simultaneously monitoring the in-plane electronic response. The ionic current exhibits pronounced hysteresis, with plateaus marking discrete ionic-density states balanced by electronic charge, while an independently tuneable electrochemical-potential drop controls the ionic transport rate. The devices sustain over 1,000 switching cycles and function as hybrid ionic-electronic transistors capable of logic operations and memory retention, with ON/OFF ratios exceeding two orders of magnitude. This work demonstrates a two-dimensional control space for ions intercalated in layered materials.
