CANCELED - State-of-the-Art Organic Semiconductors for Printed Electronics

G.P. Miller
University of New Hampshire, US

Keywords: organic semiconductors

Summary:

In order for organic semiconductors (OSCs) to be utilized in printed, thin-film electronic devices on substrates of various types including flexible, they must be formulated into a suitable ink. This requires (1) solution solubility and (2) solution phase stability. Pentacene is widely regarded as a promising OSC for electronic applications due to its relatively high charge carrier mobility, but it suffers from poor solubility in common solvents. Once in solution, it also shows a very high propensity to photooxidize (t(1/2) < 10 min). Pentacene derivatives offer increased solubility, but few are suitable for printed electronics due to poor stability or other complications. TIPS-pentacene, for example, shows limited stability in solution and photodimerizes rapidly in the solid state. In this talk, several new pentacene derivatives that show excellent solubility and superior stability will be discussed. These include a water soluble pentacene, various organic soluble pentacene derivatives with superior photooxidative resistance, and a pentacene derivative that is stable to 400 C.