scholarly journals Impact of Top Electrodes on the Nonvolatile Resistive Switching Properties of Citrus Thin Films

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 710
Author(s):  
Kai-Wen Lin ◽  
Ting-Yun Wang ◽  
Yu-Chi Chang
Keyword(s):  
Thin Films ◽  
Resistive Switching ◽  
Indium Tin Oxide ◽  
Interface Reaction ◽  
Design Guidelines ◽  
Switching Behavior ◽  
Native Oxide ◽  
Clear Understanding ◽  
Native Oxide Layer ◽  
Ito Glass

Natural citrus thin films on an indium tin oxide (ITO)/glass substrate were synthesized using the solution method for resistive random access memory (RRAM) applications. The results indicated that the citrus memory device possessed stable resistive switching behavior. For a clear understanding of the role of the interface reaction between the top metal electrode and the citrus film, we investigated the influences of various top electrode (TE) materials on the resistive switching in TE/citrus/ITO devices. In comparison with Au/citrus/ITO and Ti/citrus/ITO devices, the Al/citrus/ITO device can be reproduced with a DC voltage of more than 100 times while only showing a slight decrease in the ON/OFF ratio. In addition, the Al/citrus/ITO device exhibited a high ON/OFF ratio of over 104 and an outstanding uniformity, which was attributed to the fast formation of a native oxide layer (AlOx), as confirmed by the line scan analysis. This indicated that the interface layer, created by the redox reaction between the Al electrode and citrus film, played an important role in the resistive switching properties of TE/citrus/ITO structures. These findings can serve as design guidelines for future bio-based RRAM devices.

scholarly journals Light-activated Multilevel Resistive Switching Storage in Pt/Cs2AgBiBr6/ITO/Glass Devices

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Tingting Zhong ◽  
Yongfu Qin ◽  
Fengzhen Lv ◽  
Haijun Qin ◽  
Xuedong Tian
Keyword(s):  
Resistive Switching ◽  
Indium Tin Oxide ◽  
Sol Gel ◽  
Resistance Switching ◽  
High Density ◽  
Switching Behavior ◽  
Photoelectrical Properties ◽  
Ito Glass ◽  
One Step ◽  
Switching Characteristics

Abstract High-density Cs2AgBiBr6 films with uniform grains were prepared by a simple one-step and low-temperature sol–gel method on indium tin oxide (ITO) substrates. An explicit tristate bipolar resistance switching behavior was observed in the Pt/Cs2 AgBiBr6/ITO/glass devices under irradiation of 10 mW/cm2 (445 nm). This behavior was stable over 1200 s. The maximum ratio of the high and low resistance states was about 500. Based on the analysis of electric properties, valence variation and absorption spectra, the resistive switching characteristics were attributed to the trap-controlled space charge-limited current mechanism due to the bromine vacancies in the Cs2AgBiBr6 layer. On the other hand, it is suggested that the ordering of the Schottky-like barrier located at Pt/Cs2AgBiBr6 affects the three-state resistance switching behavior under light irradiation. The ability to adjust the photoelectrical properties of Cs2AgBiBr6-based resistive switching memory devices is a promising strategy to develop high-density memory. Graphical Abstract

scholarly journals Resistive Switching Characteristics Improved by Visible-Light Irradiation in a Cs2AgBiBr6-Based Memory Device

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1361
Author(s):  
Fengzhen Lv ◽  
Tingting Zhong ◽  
Yongfu Qin ◽  
Haijun Qin ◽  
Wenfeng Wang ◽  
...  
Keyword(s):  
Resistive Switching ◽  
Indium Tin Oxide ◽  
Double Perovskite ◽  
Memory Device ◽  
Lead Free ◽  
Switching Behavior ◽  
Light Illumination ◽  
Resistive Switching Behavior ◽  
Bipolar Resistive Switching ◽  
Ito Glass

Light-modulated lead-free perovskites-based memristors, combining photoresponse and memory, are promising as multifunctional devices. In this work, lead-free double perovskite Cs2AgBiBr6 films with dense surfaces and uniform grains were prepared by the low-temperature sol-gel method on indium tin oxide (ITO) substrates. A memory device based on a lead-free double perovskite Cs2AgBiBr6 film, Pt/Cs2AgBiBr6/ITO/glass, presents obvious bipolar resistive switching behavior. The ROFF/RON ratio under 445 nm wavelength light illumination is ~100 times greater than that in darkness. A long retention capability (>2400 s) and cycle-to-cycle consistency (>500 times) were observed in this device under light illumination. The resistive switching behavior is primarily attributed to the trap-controlled space-charge-limited current mechanism caused by bromine vacancies in the Cs2AgBiBr6 medium layer. Light modulates resistive states by regulating the condition of photo-generated carriers and changing the Schottky-like barrier of the Pt/Cs2AgBiBr6 interface under bias voltage sweeping.

scholarly journals Multilevel resistive switching memory based on a CH3NH3PbI3-xClx film with potassium chloride additives

2020 ◽  
Author(s):  
Fengzhen Lv ◽  
Kang Ling ◽  
Tingting Zhong ◽  
Fuchi Liu ◽  
Xiaoguang Liang ◽  
...  
Keyword(s):  
Potassium Chloride ◽  
Resistive Switching ◽  
Indium Tin Oxide ◽  
Switching Behavior ◽  
Carrier Injection ◽  
Retention Performance ◽  
Resistive Switching Behavior ◽  
Glass Substrates ◽  
Ito Glass ◽  
Temperature Solution

Abstract High-quality CH3NH3PbI3-xClx (MAPIC) films were prepared using potassium chloride (KCl) as an additive on indium tin oxide(ITO)-coated glass substrates using a simple one-step and low-temperature solution reaction. The Au/KCl-MAPIC/ITO/Glass devices exhibited obvious multilevel resistive switching behavior, moderate endurance, and good retention performance. Electrical conduction analysis indicated that the resistive switching behavior of the KCl-doped MAPIC films was primarily attributed to the trap-controlled space-charge-limited current conduction that was caused by the iodine vacancies in the films. Moreover, the modulations of the barrier in the Au/KCl-MAPIC interface under bias voltages were thought to be responsible for the resistive switching in the carrier injection trapping/detrapping process.

scholarly journals Multilevel resistive switching memory based on a CH3NH3PbI3-xClx film with potassium chloride additives

2020 ◽  
Author(s):  
Fengzhen Lv ◽  
Kang Ling ◽  
Tingting Zhong ◽  
Fuchi Liu ◽  
Xiaoguang Liang ◽  
...  
Keyword(s):  
Potassium Chloride ◽  
Resistive Switching ◽  
Indium Tin Oxide ◽  
Switching Behavior ◽  
Carrier Injection ◽  
Retention Performance ◽  
Resistive Switching Behavior ◽  
Glass Substrates ◽  
Ito Glass ◽  
Temperature Solution

Abstract High-quality CH3NH3PbI3-xClx (MAPIC) films were prepared using potassium chloride (KCl) as an additive on indium tin oxide(ITO)-coated glass substrates using a simple one-step and low-temperature solution reaction. The Au/KCl-MAPIC/ITO/Glass devices exhibited obvious multilevel resistive switching behavior, moderate endurance, and good retention performance. Electrical conduction analysis indicated that the resistive switching behavior of the KCl-doped MAPIC films was primarily attributed to the trap-controlled space-charge-limited current conduction that was caused by the iodine vacancies in the films. Moreover, the modulations of the barrier in the Au/KCl-MAPIC interface under bias voltages were thought to be responsible for the resistive switching in the carrier injection trapping/detrapping process.

scholarly journals Structural and Electrical Properties of Sprayed In2S3 Films on ITO/Glass Substrate

2021 ◽  
Author(s):  
J. Koaib ◽  
N. Bouguila ◽  
M. Kraini ◽  
I. Halidou ◽  
K. Khirouni ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Indium Tin Oxide ◽  
Glass Substrate ◽  
Spray Pyrolysis Technique ◽  
Electrical Conductance ◽  
Average Crystallite Size ◽  
Chemical Spray Pyrolysis ◽  
Electrical Equivalent Circuit ◽  
Ito Glass

Abstract In2S3 thin films were grown on indium tin oxide (ITO) glass substrate by chemical spray pyrolysis technique at 360°C. The structural analysis of the deposited films shows a combination of tetragonal and cubic structures. The average crystallite size is about 25 nm. The electrical properties of In2S3 thin films have been investigated in a wide frequency (40Hz-100MHz) and temperature (400 K-660 K) ranges.We find that the electrical conductance of the In2S3 thin films is frequency and temperature dependent. The dc conductance shows a semi-conductor behavior for In2S3 films over the explored range of temperature and it follows the Arrhenius law with different activation energies. The variation of ac conductance and the frequency exponent `s’ are explained by the correlated barrier hopping (CBH) model. The Nyquist plots of impedance exhibit semicircle arcs and an electrical equivalent circuit has been suggested to interpret the impedance results.

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.

scholarly journals Opto-Electronic Properties of Epoxy/Silicone Blend Based Thin Films

2021 ◽  
Author(s):  
Younes Ziat ◽  
Hamza Belkhanchi ◽  
Maryama Hammi ◽  
Charaf Laghlimi ◽  
A Moutcine
Keyword(s):  
Thin Films ◽  
Indium Tin Oxide ◽  
Optical Transition ◽  
Sol Gel ◽  
Glass Substrates ◽  
Nanostructured Thin Films ◽  
Ito Glass ◽  
Potential Applications ◽  
Optical Applications ◽  
Nitrogen Doped Carbon

Abstract Recently, the rise of two dimensional amorphous nanostructured thin films have ignited a big interest because of their intriguingly isotropic structural and physical properties leading to potential applications in the nano-optoelectronics. However, according to literature, most of optoelectronic properties are investigated on chalcogenides related heterostructures. This has motivated the present work aiming to provide a new platform for the fabrication, examination of the properties and the applications of 2D nanostructured thin films based on epoxy/silicone blend. Thin films of Epoxy/Silicone loaded with nitrogen doped carbon nanotubes (N-CNTs) were prepared by sol-gel method and deposited on Indium Tin Oxide (ITO) glass substrates at room temperature. Further examination of optical properties aimed the investigation of optical pseudo-gap and Urbach energy and enabled the determination of processed films thickness based on Manifacier and Swanepol method. The results indicated that the unloaded thin films have a direct optical transition with a value of 3.61 eV followed by noticeable shift towards narrowing gaps depending on the loading rate. Urbach's energy is 0.19 eV for the unloaded thin films, and varies from 0.43 to 1.33 eV for the loaded thin films with increasing the rate of N-CNTs. It is inversely variable with the optical pseudo-gap. Finally, Epoxy/Silicone loaded with N-CNTs nanocomposites films can be developed as active layers with specific optical characteristics, giving the possibility to be used in electro-optical applications.

scholarly journals Temperature effect on optical properties of nickel (ii) phthalocyanine tetrasulfonic acid tetrasodium salt (NiPcTs) organic thin films

2019 ◽  
Vol 13 (28) ◽  
pp. 44-51
Author(s):  
Ameer F. Abdulameer
Keyword(s):  
Thin Films ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Annealing Temperature ◽  
Optical Band Gap ◽  
Organic Thin Films ◽  
Effect Of Temperature ◽  
Good Information ◽  
Energy Gaps ◽  
Ito Glass

This study describe the effect of temperature on the opticalproperties of nickel(ii) phthalocyanine tetrasulfonic acid tetrasodiumsalt (NiPcTs) organic thin films which are prepared by spin coatingon indium tin oxide (ITO-glass). The optical absorption spectra ofthese thin films are measured. Present studies reveal that the opticalband gap energies of NiPcTs thin films are dependent on theannealing temperatures. The optical band gap decreases with increasein annealing temperature, then increased when the temperature risingto 473K. To enhance the results of Uv-Vis measurements and getmore accurate values of optical energy gaps; the Photoluminescencespectra of as-deposited and annealed NiPcTs thin films was studied.FTIR measurements for NiPcTs thin films also carried out in thiswork and gave good information about the NiPcTs bonds and itslocations as a compared with H2Pc as a reference.

Sign in / Sign up

Export Citation Format

Share Document