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Ten-minute plasma treatment improves organic memory performance

Date:
October 19, 2010
Source:
American Institute of Physics
Summary:
A group of researchers in South Korea has demonstrated an optimal combination of materials and processing for a resistive memory circuit design.

In its current early stage of development, digital memory circuits that use organic elements instead of silicon or other inorganic materials have a seemingly endless list of variables and options to consider, test, and optimize. While organic electronics are immediately attractive for their potential for extremely low cost and flexible substrates, many design aspects that are now taken for granted in the mature silicon-circuit world must be examined anew from the ground up.

A group led by Takhee Lee from South Korea's Gwangju Institute of Science and Technology has demonstrated an optimal combination of materials and processing for a resistive memory circuit design.

With a specific composite polymer located between two aluminum contacts as their on-off memory element, the scientists showed that exposing the contacts to an oxygen plasma for a mere 10 minutes prior to constructing the memory cell improved the ratio of on-to-off signal more than 10-fold, to more than 10,000. A larger ratio enables higher circuit performance.

"This simple plasma treatment is very cost-effective compared with alternatives, and improved the operation enough to enable high-performance memory devices, " said Byungjin Cho, lead author of the technical report that appeared in August 16 edition of Applied Physics Letters, which is published by the American Institute of Physics.

In addition to the on/off ratio, Cho added that other qualities such as switching speed and endurance, data retention and environmental durability must also be investigated and improved before organic memory chips would become practical. Different organic materials may also require their own solutions as well, he added.


Story Source:

The above story is based on materials provided by American Institute of Physics. Note: Materials may be edited for content and length.


Journal Reference:

  1. Byungjin Cho, Sunghoon Song, Yongsung Ji, Takhee Lee. Electrical characterization of organic resistive memory with interfacial oxide layers formed by O2 plasma treatment. Applied Physics Letters, 2010; 97 (6): 063305 DOI: 10.1063/1.3478840

Cite This Page:

American Institute of Physics. "Ten-minute plasma treatment improves organic memory performance." ScienceDaily. ScienceDaily, 19 October 2010. <www.sciencedaily.com/releases/2010/10/101019171807.htm>.
American Institute of Physics. (2010, October 19). Ten-minute plasma treatment improves organic memory performance. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2010/10/101019171807.htm
American Institute of Physics. "Ten-minute plasma treatment improves organic memory performance." ScienceDaily. www.sciencedaily.com/releases/2010/10/101019171807.htm (accessed April 23, 2014).

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