Proceedings of the Materials Research Society of Korea Conference (한국재료학회:학술대회논문집)

Materials Research Society of Korea (한국재료학회)
권호 표지

On demand nanowire device decalcomania

  • Lee, Tae-Il (Information and Electronic Materials Research Laboratory, Department of Materials Science and Engineering, Yonsei University) ;
  • Choi, Ji-Hyuck (Information and Electronic Materials Research Laboratory, Department of Materials Science and Engineering, Yonsei University) ;
  • Moon, Kyung-Ju (Information and Electronic Materials Research Laboratory, Department of Materials Science and Engineering, Yonsei University) ;
  • Jeon, Joo-Hee (Information and Electronic Materials Research Laboratory, Department of Materials Science and Engineering, Yonsei University) ;
  • Myoung, Jae-Min (Information and Electronic Materials Research Laboratory, Department of Materials Science and Engineering, Yonsei University)
  • Published : 2009.11.05
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Abstract

A simple route of external mechanical force is presented for enhancing the electrical properties of polymer nanocomposite consisted of nanowires. By dispersing ZnO nanowires in polymer solution and drop casting on substrates, nanocomposite transistors containing ZnO nanowires are successfully fabricated. Even though the ZnO nanowires density is properly controlled for device fabrication, as-cast device doesn't show any detectable currents, because nanowires are separated far from each other with the insulating polymer matrix intervening between them. Compared to the device pressed at 300 kPa, the device pressed at 600 kPa currents increased by 50times showing the linear behavior against drain voltage and exhibits promising electrical properties, which operates in the depletion mode with higher mobility and on-current. Such an improved device performance would be realized by the contacts improvement and the increase of the number of electrical path induced by external force. This approach provides a viable solution for serious contact resistance problem of nanocomposite materials and promises for future manufacturing of high-performance devices.

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