突触装置基于使用量子点的闪存

IF 0.9 4区 物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY
Jisoo Choi, Soyeon Jeong, Jeongmok Yang, Jaemin Kim, Moongyu Jang
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引用次数: 0

摘要

人脑中的神经元通过突触相互交换信号,突触传递神经元的信息并代表各种关联。在本研究中,利用量子点(QDs)制作了器件,并将其作为突触模拟器件。通过对具有Pt/Cr/Al2O3/QDs/Al2O3/SiO2/Si堆叠结构的器件的电极施加栅极电压,进行编程/擦除过程以从量子点插入或移除电子。作为一个突触模拟装置,模拟特性可以表达不同程度的连接强度,可重复性,再现性和保留是必需的。因此,通过改变施加电压和时间来调节量子点中存储的电子数量,并确定器件在各个阶段的突触特性。通过测量电容-电压特性曲线,通过平带电压位移来表示器件的状态。此外,当重复编程/擦除时,观察到设备继续运行,并且确认设备的状态随着时间的推移而保持。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Synaptic devices based on flash memory using quantum dots

Synaptic devices based on flash memory using quantum dots

Synaptic devices based on flash memory using quantum dots

Neurons in the human brain exchange signals with each other through synapses, synapses transmit neurons’ information and represent various associations. In this study, the devices using quantum dots (QDs) were fabricated and presented as a synaptic mimic device. A programming/erasing process was performed to insert or remove electrons from the quantum dots by applying a gate voltage to the electrode of the device having a stack structure of Pt/Cr/Al2O3/QDs/Al2O3/SiO2/Si. To use as a synaptic mimetic devices, analog characteristics that can express various levels of connection strength, repeatability, reproducibility, and retention are required. Therefore, the number of electrons stored in the quantum dots was adjusted by changing the applied voltage and time, and the synaptic characteristics of the device in various stages were confirmed. The state of the device was expressed through the flatband voltage shift by measuring the capacitance–voltage characteristic curves. In addition, it was observed that the device continued to operate when programming/erasing was repeated, and it was confirmed that the device’s state was maintained over time.

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来源期刊
Journal of the Korean Physical Society
Journal of the Korean Physical Society PHYSICS, MULTIDISCIPLINARY-
CiteScore
1.20
自引率
16.70%
发文量
276
审稿时长
5.5 months
期刊介绍: The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.
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