Chiroptical organic heterojunction synaptic phototransistor exhibiting near-theoretical limit asymmetry factor for neuromorphic cryptography

IF 17.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Matter Pub Date : 2025-01-13 DOI:10.1016/j.matt.2024.101945

Yu Zhang, Meiqiu Dong, Yuhan Du, Shuyuan Yang, Yiwen Ren, Yangwu Guo, Dongning Gao, Xiaolong Lin, Dong Yuan, Guofu Zhou, Yujie Yan, Lingjie Sun, Rongjin Li, Fangxu Yang, Wenping Hu

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引用次数: 0

Abstract

Advancing organic photoelectric synapses for circularly polarized light (CPL) detection poses challenges in balancing CPL discrimination and photoelectric conversion efficiency. In this study, we reveal an innovative heterojunction consisting of two-dimensional molecular crystal (2DMC) and cholesteric liquid crystal network (CLCN) film to achieve high-performance CPL-resolved synapses. The periodically ordered molecular packing and molecular-scale thickness of 2DMC amplify the efficient exciton dissociation, consequently endowing the synaptic phototransistor with exceptional responsivity of 3.45 × 10⁴ A W⁻¹. Harnessing the intrinsic chiroptical of the CLCN film on the 2DMC, the device manifests a distinguished synaptic response to CPL stimuli, as substantiated by a significant dissymmetry factor of 1.97. Furthermore, the binary output states corresponding to distinct excitatory postsynaptic current levels facilitate robust chiroptical data encoding and encryption. Our innovative integration within polarized neuromorphic vision bolsters the capabilities of photonic devices and ushers in new frontiers for secure visual data encoding and transmission.

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来源期刊

Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

26.30

自引率

2.60%

发文量

367

期刊介绍： Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content. Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.