通过非对称介电工程实现非易失性二维光电子学的时空编程
Spatiotemporal programming via asymmetric dielectric engineering for nonvolatile 2D optoelectronics
AI总结：
本研究提出一种基于非对称介电工程的双浮栅时空编程策略，实现二维半导体p-n/n-p结的非易失可逆切换，为高密度多功能智能硬件提供新范式。
AI中文摘要：
双极性二维半导体与浮栅架构集成，为非易失性、可重构电子学提供了一个有前景的平台。然而，传统上在p-n和n-p结极性之间切换需要复杂的多栅极设计，这阻碍了可扩展性和集成密度。在此，我们展示了一种利用具有对称性破缺隧穿电介质的双浮栅架构的时空编程策略。非对称介电堆叠为两个浮栅创造了不同的隧穿阈值，使得单个输入栅极能够通过定义的电压脉冲序列在二维沟道中编码空间掺杂分布。我们实现了p-n和n-p构型之间按需、非易失性和可逆的切换，并具有优异的保持特性和耐久性。可重构同质结作为多功能平台，用于逻辑编码、整流、光电探测和传感器计算。这项工作建立了一种用时空编程取代空间输入复杂性的设计范式，为高密度、多功能智能硬件铺平了道路。
英文摘要：
Ambipolar two dimensional (2D) semiconductors integrated with floating-gate architectures offer a promising platform for nonvolatile, reconfigurable electronics. However, the switching between p-n and n-p junction polarities has conventionally required complex multi-gate designs, hindering the scalability and integration density. Here, we demonstrate a spatiotemporal programming strategy using a dual-floating-gate architecture with a symmetry broken tunneling dielectric. An asymmetric dielectric stack creates distinct tunneling thresholds for two floating gates, enabling a single input gate to encode spatial doping profiles in the 2D channel via defined voltage pulse sequences. We achieve on demand, nonvolatile, and reversible switching between p-n and n-p configurations with excellent retention and endurance. The reconfigurable homojunction serves as a multifunctional platform for logic encoding, rectification, photodetection, and in sensor computing. This work establishes a design paradigm that replaces spatial input complexity with spatiotemporal programming, paving the way for high-density, multifunctional intelligent hardware.
