Electrical engineering

Fabrication

Pathology

Nanotechnology

Transistor

Organic semiconductor

Semiconductor

Field-effect transistor

Engineering

Electronics

Voltage

Composite material

Thin film

Materials science

Alternative medicine

Crystallinity

Organic electronics

Dewetting

Optoelectronics

Polymer

Medicine

Advanced Materials Technologies

The development of low‐cost printed organic electronics entails the processing of active organic semiconductors (OSCs) through solution‐based techniques. However, the preparation of large‐area uniform and reproducible films based on OSC inks can be very challenging due to the low viscosity of their solutions, which causes dewetting problems, the low stability of OSC polymer solutions, or the difficulty in achieving appropriate crystal order. To circumvent this, a promising route is the use of blends of OSCs and insulating binding polymers. This approach typically gives rise to films with an enhanced crystallinity and organic field‐effect transistors (OFETs) with significantly improved device performance. Recent progress in the fabrication of OFETs based on OSC/binding polymer inks is reviewed, highlighting the main morphological and structural features that play a major role in determining the final electrical properties and some future perspectives. Undoubtedly, the use of these types of blends results in more reliable and reproducible devices that can be fabricated on large areas and at low cost and, thus, this methodology brings great expectations for the implementation of OSCs in real‐world applications.

Organic Semiconductor/Polymer Blend Films for Organic Field‐Effect Transistors