A novel high resolution OFET (organic field effect transistor) fabrication process has been developed to realize low cost, large area electronics at low processing temperature without use of expensive, high temperature lithography process in vacuum. A drop-on-demand (DOD) ink-jetting system was used to print gold nano-particles suspended in Alpha-Terpineol solvent. Continuous Argon ion laser was irradiated locally to evaporate carrier solvent as well as sinter gold nano-particles in order to fabricate metal source and drain electrodes with high resolution and minimal thermal damage to the substrate. PVP (poly-4-vinylphenol) in Hexanol solvent and air-stable semiconductor polymer (Carboxulate - functionalized Polythiophenes) in 1,2-dichlorobenzene (o-DCB) solvent were spin-coated to form thin film of dielectric layer and semiconducting active layer. All of the processes were carried out in plastic-compatible low temperature, ambient air and atmospheric pressure environment. The OFETs showed good accumulation mode p-channel transistor behavior with carrier mobility of 0.01cm2/V·s and Ion/Ioff ratio of ranging from 103 to 104.

1.
Wang
J. Z.
,
Zheng
Z. H.
,
Li
H. W.
,
Huck
W. T. S.
,
Sirranghaus
H.
,
2004
, “
Dewetting of conducting polymer droplets on patterned surfaces
”,
Nature
,
3
, March 2004, pp
171
176
2.
Buffat
P. A.
, and
Borel
J. P.
,
1976
, “
Size effect on the melting temperature of gold particles
,”
Phys. Rev. A.
,
13
(
6)
, pp.
2287
2298
3.
Bieri
N. R.
,
Chung
J.
,
Haferl
S. E.
,
Poulikakos
D.
,
Grigoropoulos
C. P.
,
2003
, “
Microstructuring by printing and laser curing of nanoparticle solutions
,”
Appl. Phys. Lett.
,
82
(
20)
, pp.
3529
3531
.
4.
Chung
J.
,
Ko
S.
,
Bieri
N. R.
,
Grigoropoulos
C. P.
,
Poulikakos
D.
,
2004
, “
Conductor microstructures by laser curing of printed gold nanoparticle ink
,”
Appl. Phys. Lett.
,
84
(
5)
, pp.
801
803
.
5.
Chung, J., Ko, S., Bieri, N. R., Grigoropoulos, C. P., Poulikakos, D., 2003, “Laser curing of nanoparticle suspended solution,” Proc. of 2003 ASME IMECE, Washington, D.C.
6.
Chung
J
,
Bieri
N. R.
,
Ko
S.
,
Grigoropoulos
C. P.
,
Poulikakos
D
,
2004
, “
In-tandem deposition and sintering of printed gold nanoparticle inks induced by continuous Gaussian laser irradiation
”,
App. phys. A-Materials science and processing
79
(
4–6)
, pp
1259
1261
7.
Ko, S., Chung J, Choi, Y, Grigoropoulos, C.P., Bieri NR, Choi, T., Dockendorf, C. Poulikakos D, 2005, “Laser based hybrid inkjet printing of nanoink for flexible electronics”, Photonics West, 2006, San Jose, CA
8.
Ko, S., Chung, J., Choi, Y., Hwang, D., Grigoropoulos CP., Poulikakos, D, 2005, “Subtractive Laser Processing of Low Temperature Inkjet Printed Micro Electric Components of Functional Nano-ink for Flexible Electronics”, Proc. of 2005 ASME IPACK, San Francisco.
9.
Molesa, S., Redinger, D., Huang, D., Subramanian, V., 2003, “High-quality inkjet-printed multilevel interconnects and inductive components on plastic for ultra-low-cost applications”, Mat. Res. Soc. Symp. Proc. Vol 769.
10.
Redinger, D., Molesa, S., Yin, S., Farschi, R., Subramanian, V., 2004, “An Ink-Jet-Deposited passive component process for RFID”, IEEE transactions on electron devices, 51(12).
11.
Murphy
A. R.
,
Liu
J.
,
Luscombe
C.
,
Kavulak
D.
,
Frechet
J. M.
,
Kline
R. J.
,
McGehee
M. D.
,
2005
, “
Synthesis, Characterization, and Field-Effect Transistor Performance of Carboxylate-Functionalized Polythiophenes with increased air stability
”,
Chem. Mater.
,
17
, pp
4892
4899
12.
Meijer
E. J.
,
Detcheverry
C.
,
Baesjou
P. J.
,
van Veenendaal
E.
,
de Leeuw
D. M.
,
Klapwijk
T. M.
,
2003
, “
Dopant density determination in disordered organic field-effect transistors
”,
J. Appl. Phys.
,
93
, pp
4831
4835
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