Ultrastable One-Piece Pressure-Sensitive Memristor Based on Carbon Quantum Dots on BiFeO3

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Nano Materials Pub Date : 2025-04-09 DOI:10.1021/acsanm.5c0016810.1021/acsanm.5c00168

Yuxiang Qin*, and , Xinshan Zhu,

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Abstract

Developing a multifunctional device with integration of data memory and sensing performance is expected to create an era of neuromorphic computing. In this paper, a one-piece pressure-sensitive memristor based on BFO(BiFeO₃)-carbon quantum dots (CQDs) is designed to overcome the issues of redundant data transmission and the integration challenges typically faced when coupling pressure sensors with memristors. By introducing CQDs, the stability of the device’s memristive performance is significantly enhanced, achieving ultrahigh stability and maintaining consistent resistive storage performance for up to 6 months. Additionally, we observed that applying pressure to the device induces a change in its resistance, proving that it possesses both stable memristive performance and sensitivity to pressure. In addition, resistive switching and pressure-sensing mechanisms are also thoroughly explained through current fitting analysis. This study demonstrates the promising multifunctional integrated capabilities of BFO-CQD (single-material) devices, which offer a novel solution for achieving highly uniform artificial tactile devices.

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基于BiFeO3碳量子点的超稳定单片压敏忆阻器

开发集数据存储和传感性能于一体的多功能器件有望开创神经形态计算时代。本文设计了一种基于BFO(BiFeO3)-碳量子点（CQDs）的一体式压力敏感忆阻器，以克服冗余数据传输问题以及压力传感器与忆阻器耦合时通常面临的集成挑战。通过引入碳量子点，该器件的忆阻性能稳定性显著增强，实现了超高稳定性，并能在长达 6 个月的时间内保持稳定的电阻存储性能。此外，我们还观察到，对该器件施加压力会导致其电阻发生变化，这证明该器件既具有稳定的忆阻性能，又具有对压力的敏感性。此外，我们还通过电流拟合分析深入解释了电阻开关和压力感应机制。这项研究证明了 BFO-CQD（单一材料）器件具有良好的多功能集成能力，为实现高度均匀的人工触觉器件提供了一种新的解决方案。

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来源期刊

ACS Applied Nano Materials Multiple-

CiteScore

8.30

自引率

3.40%

发文量

1601

期刊介绍： ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.