Direct Observation of a Carbon Filament in Water-Resistant Organic Memory

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The memory for the Internet of Things (IoT) requires versatile characteristics such as flexibility, wearability, and stability in outdoor environments. Resistive random access memory (RRAM) to harness a simple structure and organic material with good flexibility can be an attractive candidate for IoT memory. However, its solution-oriented process and unclear switching mechanism are critical problems. Here we demonstrate iCVD polymer-intercalated RRAM (i-RRAM). i-RRAM exhibits robust flexibility and versatile wearability on any substrate. Stable operation of i-RRAM, even in water, is demonstrated, which is the first experimental presentation of water-resistant organic memory without any waterproof protection package. Moreover, the direct observation of a carbon filament is also reported for the first time using transmission electron microscopy, which puts an end to the controversy surrounding the switching mechanism. Therefore, reproducibility is feasible through comprehensive modeling. Furthermore, a carbon filament is superior to a metal filament in terms of the design window and selection of the electrode material. These results suggest an alternative to solve the critical issues of organic RRAM and an optimized memory type suitable for the IoT era.
Publisher
AMER CHEMICAL SOC
Issue Date
2015-07
Language
English
Article Type
Article
Citation

ACS NANO, v.9, no.7, pp.7306 - 7313

ISSN
1936-0851
DOI
10.1021/acsnano.5b02199
URI
http://hdl.handle.net/10203/200453
Appears in Collection
CBE-Journal Papers(저널논문)MS-Journal Papers(저널논문)EE-Journal Papers(저널논문)
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