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Adv Mater. 2012 Aug 28;24(33):4552-6. doi: 10.1002/adma.201201499. Epub 2012 Jul 12.

Direct observation of charge transfer in solid electrolyte for electrochemical metallization memory.

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  • 1Institut für Werkstoffe der Elektrotechnik, 2 & JARA-Fundamentals of Future Information Technology, RWTH Aachen University, 52056 Aachen, Germany.


X-ray absorption spectroscopy study on an electrochemical metallization cell of GeS(x) :Ag shows clear experimental evidence of chemical ionization of the active metal atoms (Ag) and consequent transfer of charge to the electrolyte (GeS(x) ). The valence electron density and its change upon the Ag intercalation are depicted schematically as transparent waves on the Ge-S bond structure in amorphous GeS(x) .

Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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