Citation: Zheng Zhang, Lei Shi, Bin Wang, Jingyuan Qu, Xiaoling Wang, Tao Wang, Qitao Jiang, Wuhong Xue, Xiaohong Xu. Epitaxial growth of full-vdW α-In₂Se₃/MoS₂ heterostructures for all-in-one sensing and memory-computing artificial visual system[J]. Chinese Chemical Letters, ;2025, 36(3): 109687. doi: 10.1016/j.cclet.2024.109687 shu

Epitaxial growth of full-vdW α-In₂Se₃/MoS₂ heterostructures for all-in-one sensing and memory-computing artificial visual system

Zheng Zhang ^{a, b, 1} ,
Lei Shi ^{a, b, 1} ,
Bin Wang ^{a, b, 1} ,
Jingyuan Qu ^{a, b} ,
Xiaoling Wang ^{a, b} ,
Tao Wang ^{a, b} ,
Qitao Jiang ^{a, b} ,
Wuhong Xue ^{a, b, *,} ,
Xiaohong Xu ^{a, b, *,}

a.
Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science of Shanxi Normal University, Taiyuan 030031, China
b.
Collaborative Innovation Center for Advanced Permanent Magnetic Materials and Technology of Ministry of Education & Research Institute of Materials Science of Shanxi Normal University, Taiyuan 030031, China

xuewuhong@sxnu.edu.cn

xuxh@sxnu.edu.cn

Received Date: 1 January 2024
Revised Date: 10 February 2024
Accepted Date: 29 February 2024
Available Online: 1 March 2024

Figures(5)

Van der Waals (vdW) ferroelectric-semiconductor heterojunction provides reconfigurable band alignment based on optical/electrical-assisted polarization switching, which shows great potential to construct artificial visual neural systems. However, the mechanical exfoliation fabrication scheme for proof-of-concept demonstrations and fundamental studies is cumbersome and not scalable for practical application. Here, we present a synthetic strategy for the large-scale and high crystallinity growth of planar/vertical α-In₂Se₃/MoS₂ heterojunctions by dynamically tuning the growth temperature. Furthermore, based on the α-In₂Se₃/MoS₂ heterostructures, photo-synapse devices are designed and fabricated to simulate visual neural systems functions, including multistate storage, optical logic operation, potentiation and depression, paired-pulse facilitation (PPF), short-term memory (STM), long-term memory (LTM), and Learning-Forgetting-Relearning. By coupling the spatiotemporally relevant optical and electric information, the device can mimic the superior biological visual system's light adaptation and Pavlovian conditioning. This work provides a strategy for dynamically tuning the orientation of ferroelectric-semiconductor heterojunction stacks and will give impetus to applying all-in-one sensing and memory-computing artificial vision systems.
- Heterojunction,
- Ferroelectric,
- α-In₂Se₃/MoS₂,
- Band alignment,
- Optoelectronic,
- Artificial vision system
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Epitaxial growth of full-vdW α-In2Se3/MoS2 heterostructures for all-in-one sensing and memory-computing artificial visual system

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通讯作者: 陈斌, bchen63@163.com

Epitaxial growth of full-vdW α-In₂Se₃/MoS₂ heterostructures for all-in-one sensing and memory-computing artificial visual system