Publication detail

Copper intercalation into Bi2Te3 single crystals

Year: 2004

Type of publication: článek v odborném periodiku

Name of source: Solid State Ionics

Publisher name: Elsevier Science BV

Place: Amsterdam

Page from-to: 251-259

Titles:

Language	Name	Abstract	Keywords
cze	Interkalace mědi do monokrystalu Bi2Te3	Prozkoumání procesu elektro-chemické interkalace a deinterkalace mědi do monokrystalu Bi2Te3.	Měď;interkalace;Bi2Te3
eng	Copper intercalation into Bi2Te3 single crystals	The process of electrochemical intercalation and deintercalation of copper ions into Bi2Te3 single crystals was studied and a conception of embedding of copper ions into octahedral and tetrahedral sites of the van der Waals gaps was proposed. Taking the lattice?gas model into consideration, values of octahedral and tetrahedral site energies, E1=−0.07 eV and E2=−0.31 eV, were determined. It was found that intercalated copper ions behave either as donors located in the van der Waals gaps and interstitial sites of five-plane layers of the crystal or as inactive species. To enlighten this effect, a model assuming an interaction of Cu+ ions with Te1 atomic planes and the formation of uncharged four-layer lamellae (Cu?Te?Bi?Te) and seven-layer lamellae carrying delocalised negative charge (Bi3Te4)− was proposed.	Copper;Intercalation;Bi2Te3

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