Employing Pneumatic Nozzle Printing for Controlling the Crystal Growth of Small Molecule Organic Semiconductor for Field‐Effect Transistors. (30th April 2018)

• Record Type: Journal Article
• Authors: Yang, Shyuan; Park, Steve; Bintinger, Johannes; Bonnassieux, Yvan; Anthony, John; Kymissis, Ioannis
• Is Part Of: Advanced Electronic Materials. Volume 4:Number 6(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-04-30
• Subjects: crystal control -- organic field‐effect transistors (OFETs) -- printing -- thin films -- transistors; Materials -- Electric properties -- Periodicals; Materials science -- Periodicals; Magnetic materials -- Periodicals; Electronic apparatus and appliances -- Periodicals; 537
• DOI: 10.1002/aelm.201700534
• Languages: English
• ISSNs: 2199-160X

Abstract

Abstract: A pneumatic nozzle‐based printing technique that can control the crystallization of small molecule organic semiconductor thin films during deposition is reported. By tuning the printing speed and the substrate temperature, large‐sized organic crystals are grown along the printing direction, resulting in field‐effect mobility enhancement by 50 times compared to spin‐coated films for 6, 13‐bis(triisopropylsilylethynyl)‐pentacene. Furthermore, silver electrodes using the technique to fabricate printed flexible inverters with a gain as high as 16 are printed. Abstract : A simple setup and process to simultaneously print and control the crystallinity of organic semiconductors is reported. This technique can enhance the field‐effect mobility of these materials by a factor of 50. To demonstrate the scope and versatility of this approach, fully printed flexible inverters using silver ink and p‐ and n‐type organic semiconductor solutions are fabricated.