Solution-printed organic semiconductor blends exhibiting transport properties on par with single crystals.

ABSTRACT: Solution-printed organic semiconductors have emerged in recent years as promising contenders for roll-to-roll manufacturing of electronic and optoelectronic circuits. The stringent performance requirements for organic thin-film transistors (OTFTs) in terms of carrier mobility, switching speed, turn-on voltage and uniformity over large areas require performance currently achieved by organic single-crystal devices, but these suffer from scale-up challenges. Here we present a new method based on blade coating of a blend of conjugated small molecules and amorphous insulating polymers to produce OTFTs with consistently excellent performance characteristics (carrier mobility as high as 6.7?cm(2)?V(-1)?s(-1), low threshold voltages of<1?V and low subthreshold swings <0.5?V?dec(-1)). Our findings demonstrate that careful control over phase separation and crystallization can yield solution-printed polycrystalline organic semiconductor films with transport properties and other figures of merit on par with their single-crystal counterparts.

SUBMITTER: Niazi MR 

PROVIDER: S-EPMC4673501 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature