Depth-resolved oxidational studies of Be/Al periodic multilayers investigated by X-ray photoelectron spectroscopy

被引：2
|
作者：
Kumar, Niranjan [1 ]
Pleshkov, Roman S. [1 ]
Prathibha, B. S. [2 ]
Polkovnikov, Vladimir N. [1 ]
Chkhalo, Nikolay I. [1 ]
Golyashov, Vladimir A. [3 ,4 ]
Tereshchenko, Oleg E. [3 ,4 ]
机构：
[1] RAS, Inst Phys Microstruct, Nizhnii Novgorod 603087, Russia
[2] BNM Inst Technol, Bangalore 560070, Karnataka, India
[3] RAS, Inst Semicond Phys, SB, Novosibirsk 630090, Russia
[4] RAS, Boreskov Inst Catalysis, Synchrotron Radiat Facil SKIF, SB, Koltsov 630559, Russia
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2023年 / 25卷 / 02期
关键词：
EXTREME-ULTRAVIOLET; INTERFACE ROUGHNESS; REFLECTIVITY; MIRRORS; BERYLLIUM; SURFACE; MO/SI; FILMS; OXIDE;
D O I：
10.1039/d2cp04778k
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 quantification of surface and subsurface oxidation of Be/Al periodic multilayer mirrors due to exposure in the ambient atmosphere was investigated by depth-resolved X-ray photoelectron spectroscopy. The contribution of oxidation was lower for the thicker layer of Al in the periodic structures since the surface was less chemically reactive for the oxidation. This was investigated by finding the depth-resolved slope of the intensity ratio of metal/oxides (Be/BeOx and Al/AlOx) by analyzing the chemical shift of Al 1s and Be 1s photoelectrons. Furthermore, a well-resolved doublet chemical shift in the O 1s spectra indicated the formation of BeOx/AlOx and BeOH/AlOH oxides. The investigation showed that the subsurface and surface regions were dominated by metal-hydroxide (BeOH/AlOH) and metal-oxide (BeOx/AlOx) bonding, respectively, analyzed by the depth-resolved chemical shifts.
引用
收藏
页码：1205 / 1213
页数：9
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