Electrical characteristics of an organic bistable device using an Al/Alq(3)/nanostructured MoO(3)/Alq(3)/p(+)-Si structure

Abstract

The electrical properties of a device with an Al/Alq(3)/nanostructured MoO(3)/Alq(3)/p(+)-Si structure were investigated for organic resistance switching memories. The conductance of the device can be electrically switched to either high conductance or low conductance. The bistable switching of the device is attributed to the MoO(3) nanoclusterlike layer interposed between the Alq(3) thin films. When the device was switched to high conductance, a space-charge field dominated carrier transportation of the device. The space-charge field was resulted from charges trapped in the MoO(3) nanoclusterlike layer. Both retention measurement and write-read-erase-read cycles of the device are also provided.