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- W2090212152 abstract "Pt∣polymer∣metal capacitors (where the polymer is polytetrahydrofuran (poly-THF) or polyacetonitrile) in which the organic dielectric is obtained by electrochemical means evolve very quickly when subjected to an electrical field. Thus, capacitors which undergo electroforming (poly-THF or polyacetonitrile with positive impurities) go from a highly resistive and passive initial state (I) to a final high conduction state (II). In this latter state, negative resistance (NR) I-V characteristics and electron emission are detected. Some of the capacitors obtained with a polyacetonitrile dielectric are preformed and display all the characteristics of state II as soon as they are polarized. In all probability, filaments already existing in the preformed samples account for the electroforming in this dielectric. After polarization, local microscopic flaws are observed on the upper contact surface of Pt∣poly-THF∣Au capacitors. These flaws are not related to electroforming, but rather to electrolytic processes occuring along the filaments, as well as to field-dependent diffusion of the gold from the counterelectrode into the dielectric. These observations indicate highly localized conduction. At high voltages (greater than 20–30 V), a new type of flaw ascribed to microscopic breakdown spots is observed." @default.
- W2090212152 created "2016-06-24" @default.
- W2090212152 creator A5002868941 @default.
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- W2090212152 date "1980-03-01" @default.
- W2090212152 modified "2023-10-16" @default.
- W2090212152 title "Electroforming and conduction in thin electrochemically prepared organic polytetrahydrofuran and polyacetonitrile films" @default.
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- W2090212152 doi "https://doi.org/10.1016/0040-6090(80)90218-7" @default.
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