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Solution-Processed Flexible Memory Devices Dr. Nadine Gergel-Hackett Dr. Behrang Hamadani Dr. Curt Richter Dr. David Gundlach.

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Presentation on theme: "Solution-Processed Flexible Memory Devices Dr. Nadine Gergel-Hackett Dr. Behrang Hamadani Dr. Curt Richter Dr. David Gundlach."— Presentation transcript:

1 Solution-Processed Flexible Memory Devices Dr. Nadine Gergel-Hackett Dr. Behrang Hamadani Dr. Curt Richter Dr. David Gundlach

2 Technology Motivation Flexible electronics is an emerging industry that sprays electronic devices onto inexpensive plastic sheets (like inkjet printer on an overhead transparency) Problem: Currently no method exists in flexible electronics for fabricating non-volatile low operation voltage memory devices ie devices that hold written state without an applied voltage Completed design and fabrication of electronic memory devices on inexpensive plastic substrates actual devices

3 Commercial Applications Integrated Sensor is Structure – T. Clark/DARPA sensor pack power supply processor & RFID communication Memory in display Sensor Tape – J. Ricklin/DARPA Flexible memory devices would have applications in almost all flexible electronics circuits, some possible uses of flexible electronics include:

4 Advantages of Method of Device Fabrication: Can be performed at room temperature and pressure Simplified design Inexpensive fabrication procedures Technology - Combining separate existing technologies (a) Contact Flexible Substrate Sol gel TiO 2 actual devices

5 Technology Devices showed an electrical switching with memory behavior Electrical characteristics of device

6 Technology Applications Areas for Improvement: write and erase voltage values, and on/off ratios vary between devices, and increase with operation Devices switched maximum of <10 times before permanently remaining in high state Source of electrical switching behavior not yet well studied

7 Technology Applications

8 Potential Applications : The Missing Piece for the Realization of Flexible Electronics Display Sensors Logic (computing) Memory (Low Power, Re-Writeable)

9 Solution-Processed Flexible Titanium Dioxide Memory Devices Provisional patent application filed 1/22/08 serial # 51/022,534 Licensing & Collaboration Opportunity

10 Contact Information Nadine Gergel-Hackett, Ph.D David Gundlach, Ph.D Curt Richter, Ph.D


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