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Direct Observation of Charge Transfer in Solid Electrolyte for Electrochemical Metallization Memory
Author(s) -
Cho DeokYong,
Valov Ilia,
van den Hurk Jan,
Tappertzhofen Stefan,
Waser Rainer
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201201499
Subject(s) - materials science , electrolyte , electrochemistry , amorphous solid , intercalation (chemistry) , valence (chemistry) , ionization , metal , chemical bond , electron transfer , absorption spectroscopy , ionization energy , analytical chemistry (journal) , chemical physics , inorganic chemistry , electrode , chemistry , crystallography , ion , optics , metallurgy , physics , organic chemistry , quantum mechanics , chromatography
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 .