Flexible molecular-scale electronic devices

Sungjun Park, Gunuk Wang, Byungjin Cho, Yonghun Kim, Sunghoon Song, Yongsung Ji, Myung Han Yoon, Takhee Lee

Research output: Contribution to journalArticlepeer-review

163 Citations (Scopus)


Flexible materials and devices could be exploited in light-emitting diodes, electronic circuits, memory devices, sensors, displays, solar cells and bioelectronic devices. Nanoscale elements such as thin films, nanowires, nanotubes and nanoparticles can also be incorporated into the active films of mechanically flexible devices. Large-area devices containing extremely thin films of molecular materials represent the ultimate scaling of flexible devices based on organic materials, but the influence of bending and twisting on the electrical and mechanical stability of such devices has never been examined. Here, we report the fabrication and characterization of two-terminal electronic devices based on self-assembled monolayers of alkyl or aromatic thiol molecules on flexible substrates. We find that the charge transport characteristics of the devices remain stable under severe bending conditions (radius ĝ‰Currency sign 1 mm) and a large number of repetitive bending cycles (ĝ‰¥1,000). The devices also remain reliable in various bending configurations, including twisted and helical structures.

Original languageEnglish
Pages (from-to)438-442
Number of pages5
JournalNature Nanotechnology
Issue number7
Publication statusPublished - 2012 Jul
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by the National Research Laboratory programme and a Korean National Core Research Centre grant from the Korean Ministry of Education, Science and Technology, and the Research Settlement Fund for new faculty at Seoul National University. The authors thank J-S. Yeo, Y. Gon and S-Y. Lee for experimental assistance.

ASJC Scopus subject areas

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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