TITLE

A low switching voltage organic-on-inorganic heterojunction memory element utilizing a conductive polymer fuse on a doped silicon substrate

AUTHOR(S)
Smith, Shawn; Forrest, Stephen R.
PUB. DATE
June 2004
SOURCE
Applied Physics Letters;6/14/2004, Vol. 84 Issue 24, p5019
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present a simple, nonvolatile, write-once-read-many-times (WORM) memory device utilizing an organic-on-inorganic heterojunction (OI–HJ) diode with a conductive polymer fuse consisting of polyethylene dioxythiophene:polysterene sulfonic acid (PEDOT:PSS) forming one side of the rectifying junction. Current transients are used to change the fuse from a conducting to a nonconducting state to record a logical “1” or “0”, while the nonlinearity of the OI–HJ allows for passive matrix memory addressing. The device switches at 2 and 4 V for 50 nm thick PEDOT:PSS films on p-type Si and n-type Si, respectively. This is significantly lower than the switching voltage used in PEDOT:PSS/p-i-n Si memory elements [J. Appl Phys. 94, 7811 (2003)]. The switching results in a permanent reduction of forward-bias current by approximately five orders of magnitude. These results suggest that the OI–HJ structure has potential for use in low-cost passive matrix WORM memories for archival storage applications. © 2004 American Institute of Physics.
ACCESSION #
13269822

 

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