Molecular Excitons of Solid Carbon Dioxide

概要

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The fundamental absorption spectra of solid carbon dioxide are studied inthe energy region from 9.2 eV to 30.0 eV, and the valence states are studied bymeans of X-ray photoelectron spectroscopy (XPS). The XPS spectra manifestthat the electronic structure in solid phase is not very different from that in gasphase. The absorption spectra show four prominent peaks in the energy regionfrom 10.0 eV to 12.0 eV, three of which are analyzed quantitatively as the excitonsarising from the molecules in optically allowed excited states 'J." and "II.. Theexciton excitation energies are calculated and show a good agreement with theexperimental spectra. The "II. state in gas phase is split into two by inter-molecularinteractions in solid phase and gives rise to the peaks at 11.0 eV and 11.2 eV in theabsorption spectra.
社団法人日本物理学会の論文
1984-03-15