Solution-Processed Single-Crystal Array for High-Performance Conformable Transistors

Abstract

Currently, almost all reported conformable organic field-effect transistors (OFETs) are based on semiconductor thin film, and most of them applied the vapor deposition method. Here, based on an inclined drop-casting method, we have successfully obtained high-quality 6,13-bis(triisopropylsilylethynyl)pentacene single-crystal transistor array on the trichloro(phenyl)silane modified anti-solvent cross-linked poly(vinyl alcohol) dielectric layer. The resulting OFET array presents an excellent electrical performance with the mobility as high as 2.22 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> V <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> s <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> . In addition, after peeling off the whole device array directly from the substrate in an all-dry process, the device array can well conform to different shaped objects and shows the highest mobility of 0.87 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> V <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> s <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> on an artificial finger nail. All of these results demonstrate great application potential of solution-processed conformable OFETs in next-generation smart electronics.