Environmental and operational stability of solution-processed 6,13-bis(triisopropyl-silylethynyl) pentacene thin film transistors

✍ Scribed by Sung Kyu Park; Devin A. Mourey; Jeong-In Han; John E. Anthony; Thomas N. Jackson

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 792 KB
• Volume: 10
• Category: Article
• ISSN: 1566-1199
• DOI: 10.1016/j.orgel.2009.02.007

✦ Synopsis

We report operational and environmental stability of solution-processed organic thin film transistors (OTFTs) using the small molecule organic semiconductor 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene). Typical drop-cast TIPS-pentacene OTFTs show strong molecular ordering and relatively stable characteristics with air and illumination compared to vapor-deposited pentacene OTFTs. For short channel length devices, TIPSpentacene OTFTs undergo significant degradation with bias-stress, possibly due to operation at large drive currents and large local power dissipation as well as built-in charges in the channel area.