Direct inkjet printing of silver electrodes on organic semiconductors for thin-film transistors with top contact geometry

We have fabricated high-performance organic thin-film transistors with top contact geometry using silver source and drain electrodes that are directly patterned on pentacene film by inkjet printing. Ink droplets containing Ag nanoparticles were ejected from inkjet nozzles. By controlling wave forms applied to piezoelectric actuators in these nozzles, the volume of the droplets can be changed from 17 to 1.4 pl. When the volume of the droplets is reduced, dc characteristics of manufactured transistors are improved significantly. The transistors manufactured with droplets of 1.4 pl exhibit a mobility of 0.3 cm2/Vs and an on-off current ratio that exceeding 106.

[1]  C. Grigoropoulos,et al.  Air stable high resolution organic transistors by selective laser sintering of ink-jet printed metal nanoparticles , 2007 .

[2]  Takao Someya,et al.  Printed shadow masks for organic transistors , 2007 .

[3]  George M. Whitesides,et al.  Features of gold having micrometer to centimeter dimensions can be formed through a combination of stamping with an elastomeric stamp and an alkanethiol ‘‘ink’’ followed by chemical etching , 1993 .

[4]  V. R. Raju,et al.  Paper-like electronic displays: Large-area rubber-stamped plastic sheets of electronics and microencapsulated electrophoretic inks , 2001, Proceedings of the National Academy of Sciences of the United States of America.

[5]  Takao Someya,et al.  A large-area, flexible pressure sensor matrix with organic field-effect transistors for artificial skin applications. , 2004, Proceedings of the National Academy of Sciences of the United States of America.

[6]  Vivek Subramanian,et al.  Progress Toward Development of All-Printed RFID Tags: Materials, Processes, and Devices , 2005, Proceedings of the IEEE.

[7]  Takeo Kawase,et al.  Inkjet Printing of Polymeric Field-Effect Transistors and Its Applications , 2005 .

[8]  T. Someya,et al.  Conformable, flexible, large-area networks of pressure and thermal sensors with organic transistor active matrixes. , 2005, Proceedings of the National Academy of Sciences of the United States of America.

[9]  Zhenan Bao,et al.  High-performance plastic transistors fabricated by printing techniques , 1997 .

[10]  Hiroshi Kawaguchi,et al.  High mobility of pentacene field-effect transistors with polyimide gate dielectric layers , 2004 .

[11]  H. Sirringhaus,et al.  High-Resolution Ink-Jet Printing of All-Polymer Transistor Circuits , 2000, Science.

[12]  M. Kawasaki,et al.  High-resolution full-color LCD driven by OTFTs using novel passivation film , 2006, IEEE Transactions on Electron Devices.

[13]  T. Muck,et al.  Organic thin-film transistors fabricated by microcontact printing , 2004 .

[14]  Erik van Veenendaal,et al.  A 13.56-MHz RFID System Based on Organic Transponders , 2006, IEEE Journal of Solid-State Circuits.

[15]  Alberto Salleo,et al.  Printing Methods and Materials for Large-Area Electronic Devices , 2005, Proceedings of the IEEE.

[16]  Takao Someya,et al.  Organic-transistor-based flexible pressure sensors using ink-jet-printed electrodes and gate dielectric layers , 2006 .

[17]  T. Jackson,et al.  Solvent-induced phase transition in thermally evaporated pentacene films , 1999 .