Solution-printed organic semiconductor blends exhibiting transport properties on par with single crystals
AuthorsNiazi, Muhammad Rizwan
Kirmani, Ahmad R.
Payne, Marcia M.
Anthony, John E.
Thoroddsen, Sigurdur T
Giannelis, Emmanuel P.
KAUST DepartmentElectron Microscopy
Imaging and Characterization Core Lab
KAUST Solar Center (KSC)
Materials Science and Engineering Program
Mechanical Engineering Program
Office of the VP
Physical Sciences and Engineering (PSE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/583282
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AbstractSolution-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 cm2 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.
CitationSolution-printed organic semiconductor blends exhibiting transport properties on par with single crystals 2015, 6:8598 Nature Communications