Pure polymer-based transparent organic bistable memory devices (TOBDs) were developed using transparent WO(3)/Ag/WO(3)(WAW) as a low resistance electrode. A device structure of indium tin oxide/polyphenylenevinylene/Al/WAW was used for the fabrication of TOBDs. PPV, as an active organic material without metal nanoparticles, was spin coated on a WAW electrode, which was followed by the deposition of an Al/WAW layer on PPV for bistability in PPV OBDs. PPV based transparent OBDs showed a high transparency and on/off ratio of 53% and 1000, respectively. (C) 2009 Elsevier B.V. All rights reserved.