Printed Organic Memories

Printed large area flexible electronics may drastically change future electronics surrounding our daily lives. Our research adds memory functionality to current printed electronics.

We are developing a simple crossbar memory on flexible plastic substrates through deposition of conducting, semiconducting, and insulating inks via solution deposition and screen printing processes. The semiconducting ink has a bistable characteristic which can switch the impedance from high (Off state) to low (On state) with an On/Off ratio up to 10⁶. Both write-once-read-many times (WORM) and rewritable memories have been demonstrated with various organic molecules. Our approach provides a high throughput and low cost solution for devices such as printed RFID, smart packaging, or intelligent posters.

Printed organic memories on PET film.