A polymer-electrolyte-based atomic switch

Shouming Wu, Tohru Tsuruoka*, Kazuya Terabe, Tsuyoshi Hasegawa, Jonathan P. Hill, Katsuhiko Ariga, Masakazu Aono

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

129 Citations (Scopus)


Studies on a resistive switching memory based on a silver-ion-conductive solid polymer electrolyte (SPE) are reported. Simple Ag/SPE/Pt structures containing polyethylene oxide-silver perchlorate complexes exhibit bipolar resistive switching under bias voltage sweeping. The switching behavior depends strongly on the silver perchlorate concentration. From the results of thermal, transport, and electrochemical measurements, it is concluded that the observed switching originates from formation and dissolution of a silver metal filament inside the SPE film caused by electrochemical reactions. This is the first report of an electrochemical "atomic switch" realized using an organic material. The devices also show ON/OFF resistance ratios greater than 10 5, programming speeds higher than 1 μs, and retention times longer than 1 week. These results suggest that SPE-based electrochemical devices might be suitable for flexible switch and memory applications. An electrochemical 'atomic switch' device is realized using a silver-ion-conductive solid polymer electrolyte (SPE). Simple Ag/SPE/Pt structures containing PEO-AgClO4 complexes show bipolar resistive switching under bias voltage sweeping. This switching behavior results from formation and dissolution of an Ag metal filament in the SPE film by electrochemical reactions. The device also exhibits high performance in data retention and programming speed properties.

Original languageEnglish
Pages (from-to)93-99
Number of pages7
JournalAdvanced Functional Materials
Issue number1
Publication statusPublished - 2011 Jan 7
Externally publishedYes


  • atomic switch
  • ionic memory
  • nanoionics
  • nonvolatile resistive memory
  • organic electrochemical devices
  • solid polymer electrolytes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


Dive into the research topics of 'A polymer-electrolyte-based atomic switch'. Together they form a unique fingerprint.

Cite this