title: Synergetic Evolution of Diketopyrrolopyrrole-Based Polymeric Semiconductor for High Reproducibility and Performance: Random Copolymerization of Similarly Shaped Building Blocks.
abstract: A new random copolymer consisting of similarly shaped donor-acceptor building blocks of diketopyrrolopyrrole-selenophene-vinylene-selenophene (DPP-SVS) and DPP-thiophene-vinylene-thiophene (DPP-TVT) is designed and synthesized. The resulting P-DPP-SVS(5)-TVT(5) with an equal molecular ratio of the two building blocks produced significantly enhanced solubility when compared to that of the two homopolymers, PDPP-SVS and PDPP-TVT. More importantly, despite the maximum segmental randomness of the PDPP-SVS(5)-TVT(5) copolymer, its crystalline perfectness and preferential orientation are outstanding, even similar to those of the homopolymers thanks to the similarity of the two building blocks. This unique property produces a high charge carrier mobility of 1.23 cm2V-1s-1of PDPP-SVS(5)-TVT(5), as determined from polymer field-effect transistor (PFET) measurements. The high solubility of PDPP-SVS(5)-TVT(5) promotes formulation of high-viscosity solutions which could be successfully processed to fabricate large-areal PFETs onto hydrophobically treated 4 in. wafers. A total of 269 individual PFETs are fabricated. These devices exhibit extremely narrow device-to-device deviations without a single failure and demonstrate an average charge carrier mobility of 0.66 cm2V-1s-1with a standard deviation of 0.064. This is the first study to report on successfully realizing large-areal reproducibility of high-mobility polymeric semiconductors.
authors.affiliation: School of Chemical Engineering and Material Science, Chung-Ang University, Seoul, 156-756, Korea.
authors.forename: Jangwhan
authors.initials: J
authors.lastname: Cho
authors.affiliation: Department of Chemistry and Research Institute for Green, Energy Convergence Technology (RIGET), Jinju, 660-701, Korea.
authors.forename: Seong Jong
authors.initials: SJ
authors.lastname: Park
authors.affiliation: School of Chemical Engineering and Material Science, Chung-Ang University, Seoul, 156-756, Korea.
authors.forename: Sung Min
authors.initials: SM
authors.lastname: Lee
authors.affiliation: School of Chemical Engineering and Material Science, Chung-Ang University, Seoul, 156-756, Korea.
authors.forename: Jae Un
authors.initials: JU
authors.lastname: Ha
authors.affiliation: Department of Chemistry and Research Institute for Green, Energy Convergence Technology (RIGET), Jinju, 660-701, Korea.
authors.forename: Eun Soo
authors.initials: ES
authors.lastname: Ahn
authors.affiliation: School of Chemical Engineering and Material Science, Chung-Ang University, Seoul, 156-756, Korea.
authors.forename: Suk Tai
authors.initials: ST
authors.lastname: Chang
authors.affiliation: School of Materials Science and Engineering and ERI, Gyeongsang National University, Jinju, 660-701, Korea.
authors.forename: Soon-Ki
authors.initials: SK
authors.lastname: Kwon
authors.affiliation: School of Chemical Engineering and Material Science, Chung-Ang University, Seoul, 156-756, Korea.
authors.forename: Dae Sung
authors.initials: DS
authors.lastname: Chung
authors.affiliation: Department of Chemistry and Research Institute for Green, Energy Convergence Technology (RIGET), Jinju, 660-701, Korea.
authors.forename: Yun-Hi
authors.initials: YH
authors.lastname: Kim
mesh_terms: D007659:Ketones / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D011758:Pyrroles / Q000737:chemistry*; D012666:Semiconductors; D014173:Transistors, Electronic
chemical_list: D007659:Ketones; D011108:Polymers; D011758:Pyrroles; C000604894:diketopyrrolopyrrole dye
keywords: diketopyrrolopyrrole; high mobility; high solubility; large-scale; random copolymerization