Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (1): 95-100.doi: 10.1007/s40242-018-7297-9

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Pressure-sensitive Transistor Fabricated from an OrganicSemiconductor 1,1'-Dibutyl-4,4'-bipyridinium Diiodide

FU Xianwei1, LIU Yang1, LIU Zhi1, DONG Ning1, ZHAO Tianyu1, ZHAO Dan1, LIAN Gang1, WANG Qilong2, CUI Deliang1   

  1. 1. State Key Laboratory of Crystal Materials, Ministry of Education, School of Chemistry & Chemical Engineering, Shandong University, Jinan 250100, P. R. China;
    2. Key Laboratory for Special Functional Aggregated Materials, Ministry of Education, School of Chemistry & Chemical Engineering, Shandong University, Jinan 250100, P. R. China
  • Received:2017-09-07 Online:2018-02-01 Published:2018-01-20
  • Contact: LIAN Gang,E-mail:liangang@sdu.edu.cn;CUI Deliang,E-mail:cuidl@sdu.edu.cn E-mail:liangang@sdu.edu.cn;cuidl@sdu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.51372143, 51102151) and the Natural Science Foundation of Shandong Province, China(No.ZR2015EM006).

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 pre- ssure-sensitive crystal structure and electrical transportation performance, especially the latter. Herein, a new pre- ssure-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.

Key words: Pressure-sensitive transistor, Organic semiconductor, High-pressure, Thermal stability