A pentacene-silicon heterojunction with multiple functions

Jung Hun Seo, Tea Yeon Oh, Jungho Park, Weidong Zhou, Byeong Kwon Ju, Zhenqiang Ma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A mechanically flexible, transparent, rectifying and photosensitive organic-inorganic heterogeneous p-n junction is demonstrated on a plastic substrate. Hexagonally patterned n-type single-crystalline silicon nanomembrane (SiNM), created from silicon-on-insulator (SOI) wafer, was complementally combined with a p-type pentacene layer to form a heterogeneous p-n junction. Excellent rectifying characteristics were obtained from the heterogeneous p-n diode. The diode also exhibits high photosensitivity at visible wavelengths with a photo-to-dark current ratio exceeding four orders, a responsivity of 0.94 mA/W and an external quantum efficiency of 21.9% at 633 nm wavelength. Over 75% peak transmittance in the visible spectrum was measured from the heterogeneous multilayer junction on a thick plastic substrate. Excellent mechanical bending characteristics were observed with up to 1.08% of strain applied to the diode. These results suggest that organic-inorganic heterogeneous integration could be a viable strategy to overcome the intrinsic limits of each individual material and thus enable a number of novel multifunctional applications.

Original languageEnglish
Title of host publicationNanotechnology 2012
Subtitle of host publicationElectronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012
Pages1-4
Number of pages4
Publication statusPublished - 2012
EventNanotechnology 2012: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012 - Santa Clara, CA, United States
Duration: 2012 Jun 182012 Jun 21

Publication series

NameTechnical Proceedings of the 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012

Other

OtherNanotechnology 2012: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012
CountryUnited States
CitySanta Clara, CA
Period12/6/1812/6/21

Keywords

  • Flexible photodetector
  • Organic-inorganic heterojunction
  • Pentacene
  • Silicon nanomembrane

ASJC Scopus subject areas

  • Ceramics and Composites
  • Surfaces, Coatings and Films

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  • Cite this

    Seo, J. H., Oh, T. Y., Park, J., Zhou, W., Ju, B. K., & Ma, Z. (2012). A pentacene-silicon heterojunction with multiple functions. In Nanotechnology 2012: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012 (pp. 1-4). (Technical Proceedings of the 2012 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2012).