On the bipolar resistive-switching characteristics of Al2O3- and HfO2-based memory cells operated in the soft-breakdown regime

2014 ◽  
Vol 116 (13) ◽  
pp. 134502 ◽  
Author(s):  
L. Goux ◽  
N. Raghavan ◽  
A. Fantini ◽  
R. Nigon ◽  
S. Strangio ◽  
...  
Keyword(s):  
Resistive Switching ◽  
Memory Cells ◽  
Bipolar Resistive Switching ◽  
Switching Characteristics ◽  
Soft Breakdown

scholarly journals Resistive Switching Characteristics of Li-Doped ZnO Thin Films Based on Magnetron Sputtering

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1282 ◽  
Author(s):  
Zhao ◽  
Li ◽  
Ai ◽  
Wen
Keyword(s):  
Thin Films ◽  
Magnetron Sputtering ◽  
Resistive Switching ◽  
Photoelectron Spectroscopy ◽  
Lattice Structure ◽  
Zno Thin Films ◽  
Bipolar Resistive Switching ◽  
X Ray ◽  
Doped Zno ◽  
Switching Characteristics

A kind of devices Pt/Ag/ZnO:Li/Pt/Ti with high resistive switching behaviors were prepared on a SiO2/Si substrate by using magnetron sputtering method and mask technology, composed of a bottom electrode (BE) of Pt/Ti, a resistive switching layer of ZnO:Li thin film and a top electrode (TE) of Pt/Ag. To determine the crystal lattice structure and the Li-doped concentration in the resulted ZnO thin films, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) tests were carried out. Resistive switching behaviors of the devices with different thicknesses of Li-doped ZnO thin films were studied at different set and reset voltages based on analog and digital resistive switching characteristics. At room temperature, the fabricated devices represent stable bipolar resistive switching behaviors with a low set voltage, a high switching current ratio and a long retention up to 104 s. In addition, the device can sustain an excellent endurance more than 103 cycles at an applied pulse voltage. The mechanism on how the thicknesses of the Li-doped ZnO thin films affect the resistive switching behaviors was investigated by installing conduction mechanism models. This study provides a new strategy for fabricating the resistive random access memory (ReRAM) device used in practice.

scholarly journals Effects of the thickness on resistive switching characteristics of CrOx thin films

2016 ◽  
Vol 19 (2) ◽  
pp. 92-100
Author(s):  
Ngoc Kim Pham ◽  
Thang Bach Phan ◽  
Vinh Cao Tran
Keyword(s):  
Thin Films ◽  
Surface Morphology ◽  
Resistive Switching ◽  
High Reliability ◽  
Switching Behavior ◽  
Ftir Analysis ◽  
Resistive Switching Behavior ◽  
Bipolar Resistive Switching ◽  
Structure Surface ◽  
Switching Characteristics

In this study, we have investigated influences of the thickness on the structure, surface morphology and resistive switching characteristics of CrOx thin films prepared by using DC reactive sputtering technique. The Raman and FTIR analysis revealed that multiphases including Cr2O3, CrO2, Cr8O21... phases coexist in the microstructure of CrOx film. It is noticed that the amount of stoichiometric Cr2O3 phase increased significantly as well as the surface morphology were more visible with less voids and more densed particles with larger thickness films. The Ag/CrOx/FTO devices exhibited bipolar resistive switching behavior and high reliability. The resistive switching ratio has decreased slightly with the thickness increments and was best achieved at CrOx – 100 nm devices.

Annealing effect on the bipolar resistive switching characteristics of a Ti/Si3N4/n-GaN MIS device

2018 ◽  
Vol 740 ◽  
pp. 816-822 ◽  
Author(s):  
Y.R. Chen ◽  
Z.M. Li ◽  
Z.W. Zhang ◽  
L.Q. Hu ◽  
H. Jiang ◽  
...  
Keyword(s):  
Resistive Switching ◽  
Annealing Effect ◽  
Bipolar Resistive Switching ◽  
Switching Characteristics

Low power consumption bipolar resistive switching characteristics of ZnO-based memory devices

2012 ◽  
Vol 10 (1) ◽  
pp. 013102-13105 ◽  
Author(s):  
Jianwei Zhao Jianwei Zhao ◽  
Fengjuan Liu Fengjuan Liu ◽  
Jian Sun Jian Sun ◽  
Haiqin Huang Haiqin Huang ◽  
Zuofu Hu Zuofu Hu ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Resistive Switching ◽  
Low Power Consumption ◽  
Memory Devices ◽  
Bipolar Resistive Switching ◽  
Switching Characteristics

scholarly journals Improved Stability and Controllability in ZrN-Based Resistive Memory Device by Inserting TiO2 Layer

Micromachines ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 905
Author(s):  
Junhyeok Choi ◽  
Sungjun Kim
Keyword(s):  
Data Storage ◽  
Resistive Switching ◽  
Memory Device ◽  
Comparison Study ◽  
Tio2 Layer ◽  
Bipolar Resistive Switching ◽  
Resistive Switching Memory ◽  
Current Voltage ◽  
Improved Stability ◽  
Switching Characteristics

In this work, the enhanced resistive switching of ZrN-based resistive switching memory is demonstrated by embedding TiO2 layer between Ag top electrode and ZrN switching layer. The Ag/ZrN/n-Si device exhibits unstable resistive switching as a result of the uncontrollable Ag migration. Both unipolar and bipolar resistive switching with high RESET current were observed. Negative-SET behavior in the Ag/ZrN/n-Si device makes set-stuck, causing permanent resistive switching failure. On the other hand, the analogue switching in the Ag/TiO2/ZrN/n-Si device, which could be adopted for the multi-bit data storage applications, is obtained. The gradual switching in Ag/TiO2/ZrN/n-Si device is achieved, possibly due to the suppressed Ag diffusion caused by TiO2 inserting layer. The current–voltage (I–V) switching characteristics of Ag/ZrN/n-Si and Ag/TiO2/ZrN/n-Si devices can be well verified by pulse transient. Finally, we established that the Ag/TiO2/ZrN/n-Si device is suitable for neuromorphic application through a comparison study of conductance update. This paper paves the way for neuromorphic application in nitride-based memristor devices.

An Investigation on Resistive Switching Characteristics Induced by HfOx and Electrode Interfaces

2015 ◽  
Vol 645-646 ◽  
pp. 169-177
Author(s):  
Xiao Rong Chen ◽  
Jie Feng
Keyword(s):  
Electric Field ◽  
Resistive Switching ◽  
Joule Heat ◽  
Negative Bias ◽  
Bipolar Resistive Switching ◽  
Comparison And Analysis ◽  
Switching Characteristics ◽  
Different Characteristics ◽  
Unipolar Devices ◽  
Switching Devices

Pt/HfOx/Pt resistive switching devices with symmetric electrodes were fabricated. Bipolar resistive switching (RS) behaviors and unipolar behaviors were then observed under a positive/negative bias applied to the top electrode (TE). A comparison and analysis of bipolar/unipolar RS behaviors under different voltage polarities was then performed.The results demonstrated that bipolar RS was achieved via a drift of anion (O2-) under the electric field resulting in the rupture and recovery of filaments at the interface. When the filaments dissolved and formed at the interface near BE, the performance of the bipolar RS devices was better. However, for unipolar RS devices, when filaments dissolved and formed at the interface near TE, the performance was even better. These results indicated that a drift of O2-caused by electric field and a diffusion of O2-induced by Joule heat were the main reasons for unipolar RS. The different characteristics of the bipolar and unipolar devices can be attributed to the existence of a different number of defects at the active interface of the devices. This was where the rupture and recovery of filaments occurred. The results also indicate that the active interface is more important than other interfaces for RRAM performance.

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