Ultraviolet and infrared absorption of fused Germania
| Autor: | Alvin J. Cohen, Herbert L. Smith |
|---|---|
| Rok vydání: | 1958 |
| Předmět: |
Germanium dioxide
Materials science business.industry Band gap Infrared Analytical chemistry Infrared spectroscopy chemistry.chemical_element Germanium General Chemistry Condensed Matter Physics medicine.disease_cause chemistry.chemical_compound Optics chemistry Absorption band medicine Ultraviolet light General Materials Science business Ultraviolet |
| Zdroj: | Journal of Physics and Chemistry of Solids. 7:301-306 |
| ISSN: | 0022-3697 |
| Popis: | Fused germania (GeO2) contains an intense absorption band centered at 2445 A and caused by a reduced germanium species, probably Ge(II). This band has a half-width comparable to that of a band centered at 2429 A in certain fused silicas and produced by the same reduced germanium species contained as an impurity. The band in germania is bleached by ultraviolet light and X-rays accompanied by an increase in absorbency below 2200 A. The energy gap for fused germania is slightly higher than a value published for hexagonal germanium dioxide, which indicates the latter is probably in error. The infrared spectrum of fused germania is also presented. |
| Databáze: | OpenAIRE |
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