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A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

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Published on: April 8, 2018

High Speed Epitaxial Perovskite Memory on Flexible Substrates.

Saidur R Bakaul¹, Claudy R Serrao¹, Oukjae Lee¹

¹Electrical Engineering & Computer Sciences, University of California, Berkeley, CA, 94720, USA.

Advanced Materials (Deerfield Beach, Fla.)

|January 24, 2017

Summary

Flexible single-crystal perovskite ferroelectric memory devices were created at room temperature. These novel devices offer faster switching, lower voltage, and better endurance compared to current flexible electronics.

Keywords:

complex oxides ferroelectrics flexible electronics single crystals

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Area of Science:

Materials Science
Solid State Physics
Device Engineering

Background:

Ferroelectric materials offer unique electronic properties.
Flexible electronics require robust and high-performance materials.
Integrating complex oxides onto flexible substrates remains a challenge.

Purpose of the Study:

To develop a room-temperature integration method for single-crystal perovskite ferroelectrics on flexible substrates.
To fabricate and characterize two-terminal memory devices using these integrated materials.
To evaluate the performance of these flexible ferroelectric memory devices.

Main Methods:

Utilized a layer transfer technique for room-temperature integration.
Fabricated two-terminal memory devices using the transferred perovskite ferroelectric films.
Tested device performance including switching speed, operating voltage, and endurance.

Main Results:

Successfully integrated single-crystal perovskite ferroelectric material onto a flexible substrate at room temperature.
Demonstrated memory devices with significantly faster switching speeds.
Achieved lower operating voltages and superior endurance compared to existing flexible memory devices.
Showcased the potential for flexible complex oxide electronics.

Conclusions:

Room-temperature layer transfer is a viable method for flexible ferroelectric integration.
Perovskite ferroelectric memory devices on flexible substrates surpass current flexible electronic performance benchmarks.
This work paves the way for flexible devices harnessing the functionalities of complex oxides.