1. Flexible Hybrid Electronic Systems
Ananth Dodabalapur
The University of Texas at Austin

5. Case I Electronic Paper
Original Proposal (with organic transistor backplanes)
1996 (Bell Labs)
First demonstration
2000/2001(Lucent/E-Ink)
Commercial prototypes
Mid 2000

6. Case II - OFET based RFID
First proposal (organic FET based RFID
1995 (Philips)
Working prototypes
2005 to 2008
Commercial production
Beyond 2010

7. Hybrid Flexible System Design
Communication
Wireless, wired
Circuit design
Semiconductor technology
Lumped silicon
Thin film semiconductors
Materials
Insulators, conductors
Other components and devices
Sensors, Actuators, display elements, etc..
Fabrication
Roll-to-roll (RTR) or other

8. Thin-Film Semiconductors
Organic and Polymer
Easiest to print
Proven compatibility with R2R
Mobilities limited to near 1 cm2/V-s*
Carbon Nanotube films
Can possess higher mobilities (near 80 cm2/V-s) for L = 100 micron devices (Rogers et al., Nature 2008)
Issues of metallic nanotubes
Separation of semiconducting nanotubes yielded cm2/V-s. (Bao et al, Science 2008)
Inorganic Semiconductors/Nanowires
High mobilities with Indium oxide (Marks et al., Nature Materials 2006)

9. Mobilities of organic FETs (Single Crystal, Thin-film small molecule, and polymer) – Complied from various data

10. In2O3 FETs (Marks et al., Northwestern)
Ion assisted deposition
Mobility > 120 cm2/V-s
Room temperature
process

11. Fabrication methods for Flexible Electronics
Ink-jet printing
Gravure
Flexo
Screen Printing
Nano-imprinting
Laser-based approaches
Photolithography for R2R

12. Technical Themes for the Study
Circuit and system design
Device physics
Inorganic and organic semiconductor materials for transistors
Dielectrics and conductors
Functional devices and materials (for sensors etc)
Fabrication processes

13. Tasks

14. Timetable
Nov. 08 Kick Off meeting (All panelists meet with sponsors and WTEC staff at NSF)
Jan. 09 Baseline workshop at NSF (optional--this surveys US research in the field)
Feb. 09 Site visits in Asia
Mar. 09 Site visits in Europe (optional)
Apr. 09 Final Workshop at NSF
July 09 Draft Final Report goal