微晶
材料科学
无定形固体
分析化学(期刊)
扫描电子显微镜
脉冲激光沉积
薄膜
差示扫描量热法
兴奋剂
相(物质)
沉积(地质)
结晶学
纳米技术
化学
光电子学
冶金
复合材料
生物
热力学
物理
色谱法
古生物学
有机化学
沉积物
作者
M. Popescu,A. Velea,F. Sava,Á. Lőrinczi,A. Tomescu,Cristian E. Simion,Elena Matei,G. Socol,I. N. Mihăilescu,A. Andonie,Ioan Stamatin
标识
DOI:10.1002/pssa.200982900
摘要
Abstract Amorphous thin films of SnSe 2 and Ge 2 Sb 2 Te 5 doped by different amount of silver (0.1, 0.2, 0.5 and 1 Ag atoms per formula unit) have been prepared by pulsed laser deposition (PLD) starting from solid polycrystalline targets. The films were investigated by X‐ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and atomic force microscopy (AFM). The good gas sensing properties for CO, as well as the sensitivity for CH 4 and NO of the Ag doped SnSe 2 films have been demonstrated in the composition SnSe 2 Ag 0.2 . The structural effect of silver introduced in Ge 2 Sb 2 Te 5 matrix has been investigated. The freshly deposited thin films doped by various amount of Ag develop three phases: an amorphous one, and two crystalline phases consisting of a major fcc cubic phase of AgSbTe 2 and a minor cubic phase of composition Ag 2 Te.
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