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Metal, CVD, alumina

Spectra for Aluminum (Al)

Al L edge for different forms of Al.  (opens larger version)
Al L edge for different Al bonding environments. The Al metal spectrum follows the features in the Al density of states (DOS). The Al oxide spectra show strong excitonic features at the edge onset – the sharp peaks are not present in a ground state DOS.

By: David Muller

Microscope: JEOL 2010F

Energy Resolution: 1 eV

Note: There is approximately a +3 eV shift in the edge onset from the Al metal to the CVD alumina and anodic alumina spectra