Optically Encodable and Erasable Multilevel Nonvolatile Flexible Memory Device Based on Metal-Organic Frameworks.

Area of Science:

• Materials Science
• Electronics Engineering
• Optoelectronics

Background:

• Flexible nonvolatile memory (NVM) is crucial for next-generation devices.
• High bias and low channel mobility are key limitations of current NVM technologies.

Purpose of the Study:

• To develop a low-bias, high-mobility flexible optoelectronic NVM.
• To utilize a composite thin film of indium-based MOF-derived InCl3 and reduced graphene oxide (rGO) as the conducting channel.

Main Methods:

• Fabrication of a flexible optoelectronic NVM device using a composite thin film.
• Demonstration of optical encoding (UV light) and erasing (visible light).
• Characterization of memory states, endurance, mechanical stability, and data retention.

Main Results:

• Achieved a low operating bias (< 0.1 V) and high-mobility graphene conducting channel.
• Demonstrated optical data encoding and erasing capabilities.
• Exhibited over 192 distinct memory levels (6-bit storage), excellent endurance (>1000 cycles), and stable retention (>10,000 s).

Conclusions:

• The developed NVM device overcomes traditional limitations of high bias and low mobility.
• The device shows potential for mass data storage in flexible optoelectronic applications.
• This work offers a new pathway for low-bias, high-performance optoelectronic memory technologies.