High-Performance Pentacene Thin-Film Transistors Fabricated by Organic Vapor-Jet Printing

Organic vapor-jet printing, a maskless direct printing method, is used to fabricate high-performance pentacene thin-film transistors. By combining the optimal carrier gas temperature and the surface treatment of gate dielectrics, a mobility of 0.46 (±0.03) cm
²
V
^-1
s
^-1
and an on-off ratio greater than 10
⁷
are achieved. Morphological analyses indicate that the relatively high carrier gas temperature and low surface energy of the dielectric surface are the keys in achieving the level of performance comparable to that of devices based on conventional technologies.