Light Sensing Artificial Synapse Based on Zinc Oxynitride for Neuromorphic Applications

被引：0

作者：

Oommen, Roshni ^{[1
]}

Jose, Kiran ^{[1
]}

Anjana, J. G. ^{[2
]}

Gandhi, Swahum ^{[1
]}

Anand, Venu ^{[1
]}

Nair, Aswathi R. ^{[1
]}

机构：

[1] Natl Inst Technol Calicut, Dept Elect & Commun Engn, Kozhikode 673601, Kerala, India

[2] Amrita Vishwa Vidyapeetham, Dept Elect & Commun Engn, Clappana 690525, India

来源：

IEEE SENSORS LETTERS | 2024年 / 8卷 / 05期

关键词：

Optical sensors; amorphous oxide semiconductors (AOS); neural networks; optoelectronic synapse; persistent photoconductivity (PPC); zinc oxynitride (ZnON);

D O I：

10.1109/LSENS.2024.3391837

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, we have demonstrated an optoelectronic synapse based on zinc oxynitride (ZnON) thin films. Unlike other amorphous oxide semiconductors, which respond mostly to UV, these ZnON films respond to blue region of the visible spectrum as well. The essential synaptic functions of the human brain, such as, sensory memory, short-term memory, long-term memory, duration-time-dependent plasticity, and paired pulse facilitation (PPF), have been demonstrated using ZnON. The fabricated ZnON synapse shows a PPF index of 140% for UV and 130% for blue light, respectively. The feasibility of utilizing these synaptic devices for neuromorphic computing has been successfully demonstrated by implementing xor Boolean logic in a neural network circuit.

引用

页码：1 / 4

页数：4

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