Energetics of oxygen species in crystalline and amorphous SiO2: a first-principles investigation

First-principles total energy calculations are carried out to investigate the relative energetics of several neutral oxygen species in alpha-quartz and amorphous SiO2. We considered both atomic and molecular oxygen, as interstitial and network species. The interstitial O-2 molecule is found to be the most stable oxygen species, both in alpha-quartz and amorphous SiO2. The formation energy of the interstitial O-2 molecule shows a strong correlation with the size of the interstitial void, strongly decreasing for increasing cage sizes. (C) 2002 Elsevier Science Ltd. All rights reserved.


Published in:
Solid-State Electronics, 46, 11, 1873-1878
Year:
2002
ISSN:
0038-1101
Other identifiers:
Laboratories:




 Record created 2009-10-08, last modified 2018-03-17


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