A UV-Erasable Stacked Diode-Switch Organic Nonvolatile Bistable Memory on Plastic Substrates

In this letter, we demonstrate a robust and stacked diode-switch organic nonvolatile bistable memory (DS-ONBM) using polymer-chain-stabilized gold nanoparticles on a plastic substrate in ambient air. The absorption spectrum of the gold nanoparticles shows ultraviolet (UV) absorption. Therefore, UV light is used to erase data in the DS-ONBM. The data in the memory can be retained for more than ten days in the air. The estimated retention time is nearly a year. This DS-ONBM is demonstrated to read, write, and retain the data and is reusable by UV-light illumination. Hence, the UV-erasable DS-ONBM is fully applicable in printed electronics such as RFID tags.