Highly transparent nonvolatile resistive memory devices from silicon oxide and graphene

Area of Science:

• Materials Science
• Electronics Engineering
• Nanotechnology

Background:

• Transparent electronics require functional memory components.
• Current transparent memory solutions face limitations in material composition, processing, and performance.

Purpose of the Study:

• To develop highly transparent, nonvolatile resistive memory devices.
• To explore the use of silicon oxide (SiO(x)) as an active material for transparent memory.
• To demonstrate the feasibility of fabricating these devices on transparent platforms.

Main Methods:

• Fabrication of two-terminal resistive memory devices using SiO(x) as the active layer.
• Utilized indium tin oxide (ITO) or graphene as electrode materials.
• Investigated filamentary conduction mechanisms within the SiO(x) material.
• Configured devices in crossbar arrays on glass and flexible substrates.

Main Results:

• Achieved highly transparent nonvolatile resistive memory devices.
• Demonstrated stable filamentary conduction in silicon channels within SiO(x), crucial for device scaling.
• Successfully fabricated memory arrays on both glass and flexible transparent platforms.
• Device performance was maintained as device size decreased.

Conclusions:

• Transparent memory using SiO(x) and ITO/graphene electrodes is feasible.
• The in-situ generated silicon channels support high-density memory applications.
• The two-terminal nature facilitates integration into 3D memory architectures.
• These devices hold promise for advanced transparent electronic applications, including flexible displays and smart windows.