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Ji Ho Kim, Dae Hee Lee, Da Seul Yang, Dong Uk Heo, Kyung Hwan Kim, Jicheol Shin, Hyun-Ji Kim, Kyung-Youl Baek, Kwangyeol Lee, Hionsuck Baik, Min Ju Cho and Dong Hoon Choi Novel Polymer Nanowire Crystals of Diketopyrrolopyrrole-Based Copolymer with Excellent Charge Transport Properties Advanced Materials 25

Version of Record online: 19 JUN 2013 | DOI: 10.1002/adma.201301536

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The first demonstration of polymer nanowire (PNW) crystals based on a diketopyrrolopyrrole-based copolymer (i.e., PDTTDPP), and their application to field-effect transistors (FETs) is reported. Remarkably, transmission electron microscopy and selected area electron diffraction analyses of the PNW reveal its single-crystalline (SC) nature. FETs fabricated of a SC PNW exhibit a maximal charge carrier mobility of ≈7.00 cm2 V−1 s−1, which is almost one order of magnitude higher than that of the thin-film transistors made of the same polymer (PDTTDPP).

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