Suitability of Various Materials for Probes in Scanning Kelvin Probe Measurements

被引：10
作者：
Huber, Silvia [1 ]
Wicinski, Mariusz [2 ]
Hassel, Achim Walter [1 ,2 ]
机构：
[1] Johannes Kepler Univ Linz, Inst Chem Technol Inorgan Mat TIM, Christian Doppler Lab Combinatorial Oxide Chem, Altenberger Str 69, A-4040 Linz, Austria
[2] Johannes Kepler Univ Linz, Inst Chem Technol Inorgan Mat TIM, Altenberger Str 69, A-4040 Linz, Austria
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2018年 / 215卷 / 15期
关键词：
contact potential difference; scanning Kelvin probe; Volta potential; work function; WORK FUNCTION; SURFACE-ROUGHNESS; RELATIVE-HUMIDITY; THIN-FILMS; ALLOYS; DELAMINATION; DEPENDENCE; CORROSION; DEFECTS; SYSTEM;
D O I：
10.1002/pssa.201700952
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Volta potential of a material can be easily determined by using scanning Kelvin probe (SKP), but up to now there is no standard method established. This study focuses on finding an alternative or even a standard material for SKP probes. Re, Ni, and Mo are analyzed regarding their suitability for serving as tips in SKP measurements. For comparison purposes, a commonly used NiCr probe is analyzed too. Linearity, the sensitivity to humidity changes as well as the lateral and Volta potential resolution are determined for various probe materials. Linearity is excellent for all tested probes. SKP measurements carried out under humidity variations shows dissimilar results for all different metal probes. Lateral and Volta potential resolution are the best for Re and Ni tips. There may be a correlation between the work function of a material and its suitability for serving as a probe in Kelvin measurements - the higher the work function, the better the resolution of Volta potentials. Based on the results, it can be concluded that pure Re and Ni are more suitable for serving as SKP probes than NiCr alloy.
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页数：7
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