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- Title
A transparent and flexible organic bistable memory device using parylene with embedded gold nanoparticles.
- Authors
Aw, K.; Ooi, P.; Razak, K.; Gao, W.
- Abstract
In this work, we demonstrate the fabrication of a transparent and flexible memory device in the simple structure of metal/dielectric/metal (MIM). Here, the MIM structure consists of gold electrode/200 nm Parylene-C/20 nm gold nanoparticles/100 nm Parylene-C/indium-tin-oxide (ITO) coated polyethylene terephthalate (PET). The use of parylene as the dielectric layer is important to ensure that there is no thermal stress induced on the flexible ITO/PET substrate compare to other reported works using various organic dielectrics that require high temperature curing. In addition, parylene deposition does not disturb the drop-casted gold nanoparticles. Hence, the use of parylene will be the right step forward in the fabrication of mechanically flexible and optically transparent devices. Current versus voltage ( I- V) plot shows the presence of hysteresis suggesting the charge storage capability as a memory device. In the I- V plot, three distinct regions based on the slope have been identified and the transport mechanisms are discussed and explained. The fabricated device shows similar behavior as write-once-read-many memory device and can be programmed with either positive or negative bias voltage. However, the memory device shows unstable current state when being bent under different curvature diameters.
- Subjects
BISTABLE devices; PARYLENE; GOLD; NANOPARTICLES; INDIUM tin oxide; POLYETHYLENE terephthalate
- Publication
Journal of Materials Science: Materials in Electronics, 2013, Vol 24, Issue 8, p3116
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-013-1219-x