Organic

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Organic Polymer Electronics Laboratory Lynn
Loo Office CPE 4.422 Labs 3.436
3.438 471-6300 http//www.engr.utexas.edu/che/dire
ctories/faculty/loo.cfm
Towards large-area flexible displays
solventless thermal laser ablation printing of
conductive polymers, Featured in Nature
Materials, January, 2003.
Water-proof plastic circuitry by lamination,
Featured in Materials Today, October, 2002.
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Introduction The Worlds First Electronic Paper
Rogers et al., Proc. Nat. Acad. Sci. USA 2001.
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Backplane Organic Transistors on Plastic
Substrate
Rogers et al., Proc. Nat. Acad. Sci. USA 2001.
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Why Organic Materials and Plastic Substrates?

• Improved mechanical flexibility and bendability
• Large-area coverage
• Compatible with high-speed reel-to-reel
  fabrication
• Low production costs
• Potential applications in large-area flexible
  displays, disposable RF
• tags, wearable electronics, etc.
• e.g., the first OLED active matrix display
  digital camera by Kodak
• (March, 2003)

Kodak LS 633 http//www.kodak.com
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Group Focus

• Design and synthesis of new materials for
  electronic applications (Bucholz, Guloy, Smith)
• Understanding structure-property
  interrelationships and how they can impact device
  performance (Krapchetov, Lee, Khan)
• Developing unconventional, non-invasive materials
  processing, patterning, and printing technologies
  specifically for organic device fabrication
  (Felmet, Lee, Mitchell)

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Group photo, December 2003.
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Organic and Polymer Electronics Laboratory
Design Synthesis of Functional Polymers
Structure Property Relationships
Device Fabrication Testing
1 polymer chemistry/physics project
available can be co-advised with Prof. Ganesan
1 patterning project available
SMM
TLB
KSL
MFK
QAS
ASG
KCF
DAK
Downstream
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Kwang Seok Lee Patterning Water-Soluble,
Conductive Polyaniline
1. Surface treat SiOx
2. Stamp hydrophobic molecules on surface
PDMS stamp coated with octadecyltrichlorosilane
3. Hydrophobic/hydrophilic pattern from
microcontact printing
4. Dip-coat polyaniline
Partially supported by DuPont Young Professor
Grant
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Preliminary Electrical Characterization
Conductivity measurements Organic
transistors that use PANI electrodes
r 0.06 S/cm
Collaborators Graciela Blanchet and Feng Gao,
DuPont Central Research, Wilmington, DE
Results will be presented at the Spring ACS
Meeting, Anaheim, CA 03/2004.