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A light incident angle switchable ZnO nanorod memristor: reversible switching behavior between two non-volatile
Jinjoo Park1, Seunghyup Lee, Junghan Lee
1Surface Chemistry Laboratory of Electronic Materials, Department of Chemical Engineering, POSTECH (Pohang University of Science and Technology), Pohang, 790-784, Korea.
Advanced Materials (Deerfield Beach, Fla.)
|September 3, 2013
Summary
This study shows a ZnO memory device
Area of Science:
- Materials Science
- Electrical Engineering
- Optoelectronics
Background:
- Resistive switching memory devices offer promising applications in electronic systems.
- Controlling the behavior of these devices, such as memristor and WORM (Write-Once-Read-Many), is crucial for advanced functionalities.
- Zinc oxide (ZnO) is a versatile semiconductor material suitable for fabricating such devices.
Purpose of the Study:
- To demonstrate light incident angle selectivity in a memory device.
- To investigate the reversible switching between memristor and resistor behaviors by controlling light angle.
- To achieve stable and reversible switching between memristor and WORM behaviors using liquid passivation.
Main Methods:
- Utilized a ZnO resistive switching device as a model system.
- Modulated the light incident angle on the device to control electrical signal behavior.
- Introduced a liquid passivation layer to enhance device stability and reversibility.
Main Results:
- Successfully demonstrated light incident angle selectivity in the ZnO memory device.
- Showcased reversible switching between memristor and resistor states by altering the light incident angle.
- Achieved stable and reversible transitions between memristor and WORM behaviors with liquid passivation.
Conclusions:
- Light incident angle is a viable parameter for controlling the electrical behavior of ZnO memory devices.
- Liquid passivation is effective in stabilizing and enabling reversible switching between different memory states.
- This work opens avenues for novel optoelectronic memory applications with angle-dependent functionalities.
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