A conceptional approach to materials for resistivity switching and thermoelectrics

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• 作者：Oliver Osters^a ; Melanie Bawohl^a ; Jean-Louis Bobet^b ; Bernard Chevalier^b ; Rodolphe Decourt^b ; Tom Nilges^a ; ^{tom.nilges@lrz.tum.de"" rel=""nofollow}
• 关键词：Resistivity switch ; Thermoelectric properties ; Silver-(poly)chalcogenidehalides
• 刊名：Solid State Sciences
• 出版年：2011
• 出版时间：May 2011
• 年：2011
• 卷：13
• 期：5
• 页码：944-947
• 全文大小：564 K

文摘

Recently silver(I)-(poly)chalcogenides have received special interest in energy conversion materials because of their thermoelectric and resistivity switching properties. In order to understand these features, a new topological principle has been developed, which is an useful tool to plan new synthesis strategies and to vary functional properties. It has been shown that anion substitution is powerful tool to tune the physical properties in terms of a thermoelectric performance optimization. Herein we report on the recently introduced substance class of silver(I)-(poly)chalcogenidehalides and the well-established class of silver(I)-chalcogenidehalides. We focus our report on the electrochemical behaviour of all known silver-(poly)telluridehalides Ag₁₀Te₄Br₃, Ag₂₃Te₁₂Br, Ag₂₀Te₁₀BrI,Ag₅Te₂Cl and selected substituted phases.