VIBRATIONAL-SPECTRA OF KOX COMPLEXES ON GRAPHITE

被引：7

作者：

CHAKAROV, DV

SJOVALL, P

KASEMO, B

机构：

[1] Department of Applied Physics, Chalmers University of Technology

来源：

SURFACE SCIENCE | 1993年 / 287卷 / pt A期

关键词：

D O I：

10.1016/0039-6028(93)90786-J

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：

KO(x) complexes on graphite, formed after potassium deposition at 160 K and different subsequent oxygen exposures, were studied by HREELS and TDS in the temperature range 160-800 K. Annealing gives rise to a succession of different KO(x) complexes, partially induced by surface segregation of intercalated potassium. A vibrational excitation at 39 meV is attributed to K2O formation. Two vibrational excitations at 30-31 and at 180 meV are probably due to KO2 or K2O2. A high temperature complex, which is an unidentified precursor to CO2 formation/desorption, has a single electron energy loss at 27 meV.

引用

页码：278 / 282

页数：5

共 27 条

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