@inproceedings{ecb1a0740bd042889a0f888816177b5c,
title = "Importance of surface modification of a micro-contact stamp for pattern fidelity of soluble organic semiconductors",
abstract = "We described the effect of the ultraviolet ozone (UVO) treatment of a polydimethylsiloxane (PDMS) stamp on the fidelity of 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-PEN) patterns produced from a TIPS-PEN/polymer blend by selective contact evaporation (SCE). During the SCE process, the TIPS-PEN in contact with the nanoporous PDMS was absorbed into the PDMS stamp, leaving out the TIPS-PEN patterns, complementary to the PDMS patterns, in the non-contact regions. For the case of the untreated, hydrophobic PDMS surface, the TIPS-PEN patterns developed initially were shrunken and eventually disappeared after 24 h due to the steady absorption of the TIPS-PEN in time. In contrast, for the UVO-treated case, the TIPS-PEN patterns were found to maintain the initial shapes over the period of 24 h since the absorption of the TIPS-PEN was limited by the hydrophilic nature of the UVO-treated PDMS. The modified PDMS surface by the UVO for 30 min yielded the highest fidelity of the TIPS-PEN patterns in both height and width. The patterned TIPS-PEN layer by the SCE was implemented into an organic field-effect transistor to demonstrate the viability of the SCE combined with the UVO treatment for solution-processed organic electronic devices.",
keywords = "PDMS, Pattern fidelity, Selection contact evaporation, Solutionprocessed organic field-effect transistor, TIPS-pentacene, Ultraviolet ozone treatment",
author = "Park, \{Hea Lim\} and Lee, \{Bo Yeon\} and Kim, \{Se Um\} and Suh, \{Jeng Hun\} and Kim, \{Min Hoi\} and Lee, \{Sin Doo\}",
note = "Publisher Copyright: {\textcopyright} 2015 SPIE.; Organic Field-Effect Transistors XIV; and Organic Sensors and Bioelectronics VIII ; Conference date: 09-08-2015 Through 12-08-2015",
year = "2015",
doi = "10.1117/12.2187774",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Iain McCulloch and Ruth Shinar and Luisa Torsi and Jurchescu, \{Oana D.\} and Ioannis Kymissis",
booktitle = "Organic Field-Effect Transistors XIV; and Organic Sensors and Bioelectronics VIII",
}