Ultralow Power Wearable Organic Ferroelectric Device for Optoelectronic Neuromorphic Computing,Nano Letters

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Ultralow Power Wearable Organic Ferroelectric Device for Optoelectronic Neuromorphic Computing
Nano Letters ( IF 9.6 ) Pub Date : 2022-06-23 , DOI: 10.1021/acs.nanolett.2c01768
Qingxuan Li ₁ , Tianyu Wang _{1,

2} , Yuqing Fang ₁ , Xuemeng Hu ₁ , Chengkang Tang ₁ , Xiaohan Wu _{1,

2} , Hao Zhu _{1,

2} , Li Ji _{1,

2} , Qing-Qing Sun _{1,

2} , David Wei Zhang _{1,

2,

3} , Lin Chen _{1,

2,

3}

Affiliation

In order to imitate brain-inspired biological information processing systems, various neuromorphic computing devices have been proposed, most of which were prepared on rigid substrates and have energy consumption levels several orders of magnitude higher than those of biological synapses (∼10 fJ per spike). Herein, a new type of wearable organic ferroelectric artificial synapse is proposed, which has two modulation modes (optical and electrical modulation). Because of the high photosensitivity of organic semiconductors and the ultrafast polarization switching of ferroelectric materials, the synaptic device has an ultrafast operation speed of 30 ns and an ultralow power consumption of 0.0675 aJ per synaptic event. Under combined photoelectric modulation, the artificial synapse realizes associative learning. The proposed artificial synapse with ultralow power consumption demonstrates good synaptic plasticity under different bending strains. This provides new avenues for the construction of ultralow power artificial intelligence system and the development of future wearable devices.

中文翻译：

用于光电神经形态计算的超低功耗可穿戴有机铁电器件

为了模仿受大脑启发的生物信息处理系统，已经提出了各种神经形态计算设备，其中大多数是在刚性基板上制备的，其能耗水平比生物突触高几个数量级（每个尖峰约 10 fJ） . 在此，提出了一种新型可穿戴有机铁电人工突触，它具有两种调制模式（光调制和电调制）。由于有机半导体的高光敏性和铁电材料的超快极化切换，突触装置具有 30 ns 的超快运行速度和每个突触事件 0.0675 aJ 的超低功耗。在联合光电调制下，人工突触实现了联想学习。所提出的具有超低功耗的人工突触在不同的弯曲应变下表现出良好的突触可塑性。这为超低功耗人工智能系统的构建和未来可穿戴设备的发展提供了新的途径。

更新日期：2022-06-23

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