Project TitleSilole-Containing Polymers
Track Code2006-004
Short Description

Novel semiconducting polymers for fabrication of air-stable electronic devices

#materials #polymer #electronic


Northwestern University researchers have synthesized three novel silole-containing polymers that can be used in production of various electronic devices. Organic polymers have been investigated thoroughly for their potential to be used in thin film field effect transistor devices. However, most materials that have been generated suffer from solubility problems or exhibit a lack of stability under ambient conditions, which causes production costs to rise. The novel silole-based polymers synthesized by the Marks group are stable in air, which makes both device fabrication and operation simpler and less expensive. All three polymers were fabricated into thin films via simple solution processing techniques (spin coating and drop casting). In addition, all of the field effect transistors incorporating these new materials performed well in laboratory tests. While there were variations between the different compounds, all devices had high hole mobility and on/off ratio, while operating at a low turn-on voltage. These desirable characteristics could make silole-based polymers a material of choice for production of low-cost flexible electronic devices.

TagsMATERIALS: polymer, MATERIALS: electronic
Posted DateMar 13, 2015 2:51 PM


Tobin Marks*

Antonio Faccetti

Gang Lu

Hakan Usta

Joseph Letizia


  • Thin film transistors
  • Solar cells
  • Radiofrequency identification tags
  • Flexible electronics


  • Stable at ambient conditions
  • Simple to fabricate
  • High hole mobility and on/off ratio


Lu G, Usta H, Risko C, Wang L, Faccetti A, Ratner MA, Marks TJ (2008). Synthesis, Characterization, and Transistor Response of Semiconducting Silole Polymers with Substrantial Hole Mobility and Air Stability Experiment and Theory, J. Am. Chem. Soc. 130: 7670-7685.

IP Status

 International patent application has been filed.  US patents 7,816,480 and 7,605, 225 have been issued.

Contact Information

Zach Brown, PhD 

Invention Associate 


(p) 847.491.4629