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题名: Electrodeposition of silver telluride thin films from non-aqueous baths
作者: Chen, RZ;  Xu, DS;  Guo, GL;  Gui, LL
关键词: electrodeposition ;  thin films ;  silver telluride ;  Ag7Te4 ;  DMSO
刊名: ELECTROCHIMICA ACTA
发表日期: 2004-06-15
DOI: 10.1016/j.electacta.2004.01.004
卷: 49, 期:14, 页:2243-2248
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Electrochemistry
研究领域[WOS]: Electrochemistry
英文摘要: We describe a method for preparation of crystalline silver telluride films by cathodic deposition from dimethyl sulfoxide (DMSO) solutions containing 0.1 M NaNO3, 5.0 mM AgNO3 and 3.5-7.0 mM TeCl4. X-ray diffraction data indicated that the deposited silver telluride films could be adjusted from Ag excess and stoichiometric monoclinic Ag2Te to hexagonal Ag7Te4 by increasing the concentration of TeCl4 in the electrolyte or lowering the deposition potential. The Ag2Te film is gray and the Ag7Te4 film is dark blue-gray and mirror like adhered strongly to the substrates. Scanning electron microscopy images show that Ag2Te films were formed with globular grains with average diameters of more than 1 mum. In contrast, Ag7Te4 film consists of triangles characteristic of a (1 1 1) single-crystal with a hexagonal structure in average sizes of about 0.4 mum. The X-ray photoelectron spectra (XPS) indicated that the binding energies deviation of Te3d in Ag7Te4 is less than that in Ag2Te, which is consistent with the apparent valences of Te in Ag2Te and Ag7Te4. Finally, the cathodic deposition reactions were studied by cyclic voltammetry. (C) 2004 Elsevier Ltd. All rights reserved.
关键词[WOS]: PHASE-TRANSITION ;  AG2TE ;  MAGNETORESISTANCE
语种: 英语
WOS记录号: WOS:000220455200003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139485
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Peking Univ, Inst Chem Phys, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100871, Peoples R China

Recommended Citation:
Chen, RZ,Xu, DS,Guo, GL,et al. Electrodeposition of silver telluride thin films from non-aqueous baths[J]. ELECTROCHIMICA ACTA,2004,49(14):2243-2248.
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