Optoelectronic memristive sensor with reconfigurable logic operation capability in ZnO/Nb:SrTiO3 heterojunction

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-07-15 DOI:10.1063/5.0275116

Caili Dong, Kaijin Kang, Youhong Wang, Xuefeng Chen, Chuanfu Yang, Wei Hu

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引用次数: 0

Abstract

The optoelectronic memristive sensor exhibits unique advantages due to its nonvolatile memory, low power consumption, and dynamic response to light signals. In this work, an interfacial type memristive sensor based on a ZnO/Nb:SrTiO3 heterojunction is fabricated, exhibiting stable resistive switching characteristics, multi-level storage capability, and long retention time. Light sensing measurements indicate that the device shows a self-powered photoresponse behavior and a persistent photoconductive effect upon exposure to 365 nm ultraviolet light. Furthermore, reconfigurable “OR” and “NIMP” logic operations under both light and electrical stimulation are implemented. Temperature dependent analysis of resistance reveals that the charge transport follows the space-charge-limited current mechanism in both high and low resistance states. Consequently, the resistance switching effect and the corresponding photoresponse can be attributed to the migration of oxygen vacancies coupled with electron trapping/de-trapping. This work highlights the potential of the ZnO/Nb:SrTiO3 heterojunction for applications in optoelectronic memristive sensors and programmable logic circuits.

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具有可重构逻辑运算能力的ZnO/Nb:SrTiO3异质结光电忆阻传感器

光电记忆传感器具有非易失性、低功耗和对光信号的动态响应等优点。本文制备了一种基于ZnO/Nb:SrTiO3异质结的界面型忆阻传感器，该传感器具有稳定的电阻开关特性、多级存储能力和长保持时间。光传感测量表明，该器件在365 nm紫外光照射下表现出自供电的光响应行为和持续的光导效应。此外，可在光刺激和电刺激下实现可重构的“OR”和“NIMP”逻辑运算。电阻的温度依赖性分析表明，在高电阻和低电阻状态下，电荷输运都遵循空间-电荷限制电流机制。因此，电阻开关效应和相应的光响应可归因于氧空位的迁移以及电子捕获/去捕获。这项工作强调了ZnO/Nb:SrTiO3异质结在光电忆阻传感器和可编程逻辑电路中的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.