Florian Dötz

Towards printable organic thin film transistor based flash memory devices

The implementation of plastic electronic solutions to large area displays, disposable sensor arrays, radio-frequency identification tags (RFIDs), and various smart packaging devices necessitate the development of organic memories that are solution-processable and readily integrated with the transistors for digital logic. This article highlights recent research progress made towards organic memory transistors based on charge trapping and focuses on the principles and materials (namely, nanoparticles and polymer electrets) for these devices. The challenges and prospects of charge trapping memories are also discussed.

Solution processed non-volatile top-gate polymer field-effect transistors

This communication describes development of a top gate solution processable organic memory solution. Transistor memories (p-type and ambipolar) operating at voltages between 20 and 30 V with memory on–off ratios close to 103 at programming speeds of 1 ms were fabricated on glass and flexible PET substrates. Successful retention of the stored state for 1 week is also demonstrated.