National Institute of Advanced Industrial Science and Technology (AIST) Prints Memory on Plastic Substrate.Tokyo, Japan, Dec 20, 2005 - (JCN) - The Organic Semiconductor A semiconductor made from a carbon-based material. For example, light-emitting polymers (LEPs) are organic semiconductors. Contrast with inorganic semiconductor. See LEP. Devices Group of the Photonics Research Institute of the National Institute of Advanced Industrial Science and Technology (AIST AIST - Advanced Industrial Science and Technology (Japan) AIST - Agency of Industrial Science and Technology AIST - Air Intelligence Support Team AIST - American Institute of Science and Technology AIST - American International Sports Tournament AIST - Association for Iron & Steel Technology AIST - Association of Independent Schools of Tasmania AIST - Automatic Information Station AIST - National Institute of Advanced Industrial Science and Technology (Japan)) has prototyped a memory device that has a 3x3 memory array printed on a flexible plastic film substrate. The research group used a soluble biopolymer bi·o·pol·y·mer (b    -p l material with a bar-like helix structure to create a ferroelectric Refers to a material that functions similarly to a ferromagnetic material in that it can be polarized into two states. Ferroelectric devices generally do not have any "ferrous" (iron) in them. See FeRAM and ferroelectric capacitor. thin film A microscopically thin layer of material that is deposited onto a metal, ceramic or semiconductor base. Typically less than one micron thick, thin films can be conductive or dielectric (non-conductive). For example, the top metallic layer on a chip and the coating on magnetic disks are thin films. See sputtering. by changing inter-molecular interactions by controlling the molecular weight and molecular structure of the biopolymer. Then, the group has made a two-terminal device that has the ferroelectric thin film, treated as a dielectric layer, placed between electrodes, and confirmed that the device demonstrates memory capability. Using the ferroelectric biopolymer thin film and an organic semiconductor, the group has prototyped a 3x3-pixel-equivalent memory array screen-printed on a flexible plastic film and confirmed that the device retains a two-digit drain current on/off ratio for more than 10 days after power is turned off. Photo: http://www.aist.go.jp/aist_j/press_release/pr2005/pr20051219/pr20051219.html Copyright [c] 2005 Japan Corporate News Network. All rights reserved. |
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