Abstract
Although organic semiconductors have attracted extensive interest and been utilized to fabricate a variety of optoelectronic devices, their electrical transportation characteristics under high pressure have rarely been investigated. However, the weak intermolecular interaction of organic semiconductors endows them with a pressure-sensitive crystal structure and electrical transportation performance, especially the latter. Herein, a new pressure-sensitive transistor was fabricated from an organic semiconductor 1,1′-dibutyl-4,4′-bipyridinium diiodide. It was found that this transistor exhibited increasing resistance as the pressure gradually increased and that it eventually shut off under a pressure of 288 MPa. Such a characteristic makes this organic semiconductor a potential candidate for the use in the fabrication of pressure-sensitive switches and regulators. In addition, these results shed light on the electrical performance of flexible organic optoelectronic devices working under high pressure levels resulted from the bending force.
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The authors faithfully thank Prof. YU Xiaoqiang from the State Key Laboratory of Crystal Materials, Shandong University for his kind help in revising this manuscript.
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Supported by the National Natural Science Foundation of China(Nos.51372143, 51102151) and the Natural Science Foundation of Shandong Province, China(No.ZR2015EM006).
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Fu, X., Liu, Y., Liu, Z. et al. Pressure-sensitive transistor fabricated from an organic semiconductor 1,1′-dibutyl-4,4′-bipyridinium diiodide. Chem. Res. Chin. Univ. 34, 95–100 (2018). https://doi.org/10.1007/s40242-018-7297-9
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DOI: https://doi.org/10.1007/s40242-018-7297-9