Programmable organic thin-film devices with extremely high current densities

Troy Graves-Abe, J. C. Sturm

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Thin (12 nm) organic films consisting of self-assembled multilayers of 11-mercaptoundecanoic acid were contacted by gold electrodes. The devices could be operated as a programmable memory by applying low-voltage pulses to increase the conductivity by 103 and then high-voltage pulses to reverse the increase; the conductivity of the stored state could be read nondestructively by applying a still-lower voltage pulse. Programmed states remained stable for longer than three months and devices were functional for more than 104 programming cycles. Current-voltage measurements of the devices revealed negative differential resistance with enormous current densities characteristic of metallic conduction (up to 107 A cm2). These results are promising for application in dense, high-speed memory arrays, where resistance-capacitance delays can be minimized by large current densities.

Original languageEnglish (US)
Article number133502
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number13
StatePublished - Sep 26 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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