Flexible, Semitransparent, and Inorganic Resistive Memory based on BaTi0.95Co0.05O3 Film

Perovskite ceramics and single crystals are commonly hard and brittle due to their small maximum elastic strain. Here, large-scale BaTi0.95Co0.05O3 (BTCO) film with a SrRuO3 (SRO) buffered layer on a 10 mu m thick mica substrate is flexible with a small bending radius of 1.4 mm and semitransparent for visible light at wavelengths of 500-800 nm. Mica/SRO/BTCO/Au cells show bipolar resistive switching and the high/low resistance ratio is up to 50. The resistive-switching properties show no obvious changes after the 2.2 mm radius memory being written/erased for 360 000 cycles nor after the memory being bent to 3 mm radius for 10 000 times. Most importantly, the memory works properly at 25-180 degrees C or after being annealed at 500 degrees C. The flexible and transparent oxide resistive memory has good prospects for application in smart wearable devices and flexible display screens.