Effect of Annealing on the Behavior of Oxygen Dissolved in Germanium and Optical Properties of Single Crystals
| Autor: | Oleg I. Podkopaev, A. F. Shimanskii, T. O. Pavluk, R. A. Filatov, S. A. Kopytkova, A. N. Gorodishcheva |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
ANNEALING Materials science Annealing (metallurgy) Analytical chemistry chemistry.chemical_element Infrared spectroscopy Germanium 02 engineering and technology Partial pressure Atmospheric temperature range SINGLE CRYSTALS THERMAL DONORS 021001 nanoscience & nanotechnology 01 natural sciences Oxygen GERMANIUM OXYGEN chemistry 0103 physical sciences Thermal IR-SPECTROSCOPY Limiting oxygen concentration OPTICAL PROPERTIES 0210 nano-technology |
| Popis: | The annealing effect in the temperature range from 350 to 450 °С on the behavior of interstitial oxygen Оi dissolved in germanium and on optical properties of single crystals has been investigated by Fourier transformed infrared spectrometry. It was found that oxygen band maximum of 843 cm–1 shifted toward the 856 cm−1 with oxygen concentration increasing after annealing at the oxygen partial pressure ranged from 1 to 103 Pа. The annealing at lower values led to the decrease of 843 cm–1 band intensity due to the formation of thermal donors (TD) on the basis of dissolved oxygen atoms Оi. It was established that TD formation and the decrease of unbound oxygen concentration affected optical properties of the crystals. |
| Databáze: | OpenAIRE |
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