High Performance Polymers, 2nd Edition

11: POLY(NAPHTHALATES) 273

A common gate flexible thin-film transistor on a

PEN film can be fabricated by step and flash imprint

lithography [96].It has been demonstrated thatthe step

and flash imprint lithography is a roll-to-roll compati-

ble and down scalable patterning technique on a flexi-

ble PEN foil for the fabrication of flexible high-quality

thin film transistors.

Ferroelectric capacitors have been fabricated on a

PEN substrate using a copolymer from vinylidene flu-

oride and trifluoroethylene [97]. Gold was used for the

electrodes. These capacitors showed remarkable fer-

roelectric characteristics even when they were fabri-

cated by a lithography-compatible patterning process

at a low temperature below 150

◦

C.

11.5.3 Fibers

Polyesters, such as PET, are