Solution processed Ag electrode for organic thin-film transistors

We developed the solution processed Ag source/drain electrodes for stable organic thin-film transistor (OTFT) with 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene). Even though there is a large hole injection barrier between Ag and TIPS-pentacene, the TFT with solution-processed Ag shows good performance. It is due to the continuous formation of organic semiconductor between solution-processed Ag electrodes and TFT channel region with well-organized π–π stacking. The electrical stability of the TFT is much better than that of the TFT using sputtered Ag source/drain electrodes.

► TIPS-pentacene OTFT with solution-processed source/drain Ag electrode.
► High performance and stable TIPS pentacene OTFT.
► The continuous formation of TIPS-pentacene between Ag electrodes and TFT channel region.
► Ordering of TIPS-pentacene crystalline on solution-processed Ag electrode.