Transparent bipolar resistive switching memory on a flexible substrate with indium-zinc-oxide electrodes

Seung Won Yeom, Hyeon Jun Ha, Junsu Park, Jae Won Shim, Byeong Kwon Ju

Research output: Contribution to journalLetterpeer-review

7 Citations (Scopus)


We fabricated transparent indium zinc oxide (IZO)/TiO2/IZO devices on flexible polyethylene phthalate (PET) substrates. These devices demonstrate bipolar resistive switching behavior, exhibit a transmittance greater than 80 % for visible light, and have stable resistive switching properties, including long retention and good endurance. In addition, the devices were investigated based on their temperature dependence; the results show metallic properties in the low-resistance state (LRS) and semiconducting properties in the high-resistance state (HRS). The conduction mechanism for resistive switching in our device was well-fitted with Ohmic conduction in the LRS and Poole-Frenkel emission in the HRS. The mechanism could be explained by the formation and the rupture of the conduction paths formed by the movement of oxygen ions and vacancies. Moreover, acute bending of the devices did not affect the memory characteristics because of the pliability of both the IZO electrodes and the thin oxide layer. These results indicate potential applications as resistive random access memories in future flexible, transparent electronic devices.

Original languageEnglish
Pages (from-to)1613-1618
Number of pages6
JournalJournal of the Korean Physical Society
Issue number11
Publication statusPublished - 2016 Dec 1


  • Flexible electronics
  • Oxygen vacancy
  • Poole-Frenkel emission
  • ReRAM
  • Resistive switching
  • TiO
  • Transparent electronics

ASJC Scopus subject areas

  • General Physics and Astronomy


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