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Chapter 5
while the selenised samples only showed small spots in the middle section. At the
edges of the selenised samples some more coloured spots had appeared, especially
on Mo10Se. This sample, which was deposited under the middle argon pressure, has
degraded the most out of the three selenised samples.
In comparison, the non-selenised samples showed a clear relation between argon
sputter pressure and degree of degradation. The sample with the highest sputter
pressure has the highest degree of degradation.
After 105 hours, the non-selenised samples had degraded further, leading to the
coverage of a large part of the surface of the samples with a greyish material (Figure
5.5). This material easily flaked off the surface: small flakes were found in the sample
Figure 5.4
Photographs of the samples (30x25 mm) after 33 hours exposure to 85°C/85% RH.
Figure 5.5
Photographs of the samples (30x25 mm) after 105 hours exposure to 85°C/85% RH.
136
while the selenised samples only showed small spots in the middle section. At the
edges of the selenised samples some more coloured spots had appeared, especially
on Mo10Se. This sample, which was deposited under the middle argon pressure, has
degraded the most out of the three selenised samples.
In comparison, the non-selenised samples showed a clear relation between argon
sputter pressure and degree of degradation. The sample with the highest sputter
pressure has the highest degree of degradation.
After 105 hours, the non-selenised samples had degraded further, leading to the
coverage of a large part of the surface of the samples with a greyish material (Figure
5.5). This material easily flaked off the surface: small flakes were found in the sample
Figure 5.4
Photographs of the samples (30x25 mm) after 33 hours exposure to 85°C/85% RH.
Figure 5.5
Photographs of the samples (30x25 mm) after 105 hours exposure to 85°C/85% RH.
136
