Passivation Kinetics at Semiconductor Interfaces | Interaction of hydrogen with GaAs surfaces and Si/SiO2 interfaces
Ligia Gheorghita
ISBN 10: 3844382232 ISBN 13: 9783844382235
Editore: LAP LAMBERT Academic Publishing, 2011
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Passivation Kinetics at Semiconductor Interfaces | Interaction of hydrogen with GaAs surfaces and Si/SiO2 interfaces | Ligia Gheorghita | Taschenbuch | 168 S. | Englisch | 2011 | LAP LAMBERT Academic Publishing | EAN 9783844382235 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. Codice articolo 106899566
Riassunto:
This work describes the interaction of atomic hydrogen with defects at GaAs surfaces and Si/SiO2 interfaces. By continuously monitoring the photoluminescence of a GaAs wafer in a discharge-flow system it was observed that there was an initial irreversible passivation of the surface in the presence of the hydrogen atoms. This was followed by an improved, reversible passivation that occurred when the exposure to atomic hydrogen was discontinued. Similar results were obtained when the concentration of defects at the interface of Si/SiO2 was monitored continuously, in situ, with a remote radio frequency (RF) probe that measured the steady-state photogenerated carriers. By comparing the GaAs and Si/SiO2 systems it was concluded that hydrogen atoms could be trapped at interstitial sites near both interfaces. The reaction of molecular hydrogen with defects at Si/SiO2 interfaces was also investigated using the RF-probe. The results indicated the presence of other interfacial defects that react with H2, which could not be detected in earlier electron paramagnetic resonance studies.
L'autore: Ligia Gheorghita, PhD. MSc at the University of Guelph, Ontario. PhD inPhysical Chemistry at the University of British Columbia, Vancouver, Canada.
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Titolo: Passivation Kinetics at Semiconductor ...
Casa editrice: LAP LAMBERT Academic Publishing
Data di pubblicazione: 2011
Legatura: Taschenbuch
Condizione: Neu