Realization of volatile and non-volatile resistive switching with N-TiO2 nanorod arrays based memristive devices through compositional control
发布时间：2022-03-25
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影响因子：5.316
DOI码：10.1016/j.jallcom.2022.164743
所属单位：中南大学
发表刊物：Journal of Alloys and Compounds
关键字：VolatileNon-volatile Leaky Integrate-and-Fire Nitrogen doped TiO2 NRAs Resistive switching
摘要：It is attractive to manipulate the volatile and non-volatile resistive switching behaviors of memristors to create genuine neuromorphic systems such as artificial neural networks (ANNs) and spiking neural networks (SNNs). To investigate the above behaviors, nitrogen has been introduced into TiO2 nanorod arrays (TiO2 NRAs) by hydrothermal processing. X-ray photoelectron spectroscopy (XPS) analysis shows that both lattice and interstitial nitrogen are incorporated into the TiO2 NRAs. Nitrogen doped TiO2 NRAs (N-TiO2 NRAs) based memristive devices with different contents of lattice nitrogen were investigated systematically. The results show that non-volatile restive switching is achieved at up to a relative lattice nitrogen content of 21%, with volatile switching behavior above this value. The volatile memristive devices show similar spiking and decay features to the Leaky Integrate-and-Fire (LIF) model. The lifetime of the decay process of the volatile devices rang from 0.029 to 1.835 s. The longest lifetime is obtained when the relative content of lattice nitrogen is about 70%. The volatile behavior is related to the large defect concentration, caused by nitrogen doping. The proposed nitrogen engineered memristive devices could pave the way to achieving a physical neuromorphic system.
第一作者：Y. Yu
论文类型：期刊论文
通讯作者：C. Jiang
学科门类：工学
一级学科：材料科学与工程
文献类型：J
卷号：909
ISSN号：0925-8388
是否译文：否
发表时间：2022-03-22
收录刊物：SCI
发布期刊链接：https://www.sciencedirect.com/journal/journal-of-alloys-and-compounds