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

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-...

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Detalles Bibliográficos
Autores principales: Niazi, Muhammad R., Li, Ruipeng, Qiang Li, Er, Kirmani, Ahmad R., Abdelsamie, Maged, Wang, Qingxiao, Pan, Wenyang, Payne, Marcia M., Anthony, John E., Smilgies, Detlef-M., Thoroddsen, Sigurdur T., Giannelis, Emmanuel P., Amassian, Aram
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4673501/
https://www.ncbi.nlm.nih.gov/pubmed/26592862
http://dx.doi.org/10.1038/ncomms9598
Descripción
Sumario: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.