ON THE THERMAL-STABILITY OF COPPER-DEPOSITS ON A (0001) SAPPHIRE SURFACE

被引:35
作者
GUO, QL [1 ]
MOLLER, PJ [1 ]
机构
[1] UNIV COPENHAGEN,HC ORSTED INST,PHYS CHEM LAB,DK-2100 COPENHAGEN,DENMARK
关键词
D O I
10.1016/0039-6028(91)90496-F
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The thermal stability of copper depositied on a sapphire, alpha-Al2O3(0001)-1 x 1 substrate in UHV has been studied by Auger electron spectroscopy and electron energy-loss spectroscopy. The results indicate formation of a bond between the initially deposited copper and oxygen sites, and a Cu(I) state. The ultrathin Cu films, deposited upon room-temperature substrates, are stable on the substrate at temperatures below 430-degrees-C. For comparison, an ultraviolet photoelectron spectroscopy study was made on Cu deposited on Al2O3/Al(111).
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页码:228 / 236
页数:9
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