Fabrication of rewritable and shape-conformal memory devices on arbitrary substrates
Ying-Chih Lai1,2, Bo-Wei Ye3*, Yi-Xiang Wang3, Ya-Ping Hsieh4, Yang-Fang Chen1
1Department of Physics, National Taiwan University, Taipei, Taiwan
2Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan
3Graduate Institute of Applied Physics, National Taiwan University, Taipei, Taiwan
4Graduate Institute of Opto-Mechatronics, National Chung-Cheng University, Chiayi, Taiwan
* presenting author:葉柏偉, email:r02245002@ntu.edu.tw
Fabrication of functional devices on arbitrary non-conventional substrates has significant advantages for broadening devices applications and the development of soft electronic systems such as flexible, stretchable, wearable and epidermal electronic modules. Information storage device is one of crucial electronic elements in modern digital circuitries. Herein, we demonstrated a re-writable, transferable and flexible sticker-type organic memory on universal substrates through a facile and cost-effective one-step strategy. The organic memory sticker based on the graphene electrode grown by chemical vapor deposition consists of a blending composite of polymer (poly (methyl methacrylate) (PMMA):poly (3-hexylthiophene) (P3HT) in chlorobenzene (CB) fabricated by mature solution processes and facilities. By combining with the mechanical elastic of organic material and graphene electrode, the sticker-type organic memory can be easily tagged on non-planar or flexible substrates after etching away the supporting metal, which plays like an electrical Post-it memory label. Particularly, the new attachable sticker-type memory processes a feature of re-programmable capability. It is believed that the universal substrate selectivity of the sticker-type organic memory with re-writable characteristic revealed here may greatly enlarge information storage devices in immense areas and advance the future functional soft circuitries.

Keywords: Memory , Flexible, Graphene , Rewritable