Por favor, use este identificador para citar o enlazar este ítem:
http://repositoriodigital.ipn.mx/handle/123456789/9087
Título : | Raman study of luminescent spark processed porous GaAs |
Autor : | Rojas López, Marlon |
Palabras clave : | GaAs |
Fecha de publicación : | 17-dic-2012 |
Resumen : | We have analyzed spark-processed porous GaAs ~spp-GaAs! samples prepared by the application of high-voltage discharges at low repetition rates ~20 Hz! in different ambients, ranging from pure nitrogen to pure oxygen flow, using a microRaman probe and a scanning electron microscope in combination with an energy dispersive spectroscopy system ~SEM-EDS!.We found that for samples prepared in pure nitrogen, the resulting material is basically amorphous material, with amorphous-GaAs with some cubic phase of As2O3 also present. For samples prepared under even a low concentration of oxygen, 20:1, we find that the cubic phase of As2O3 is substituted by the monoclinic phase of As2O3 ‘‘claudetite.’’ SEM micrographs show the resultant morphologies obtained that exhibit a porous, granular, agglomerated granular appearance. EDS and Raman suggest that the claudetite phase of As2O3 and As2O5 play a contributing role in the green-blue photoluminescence emitted by spp-GaAs. © 2001 American Vacuum Society. |
Descripción : | Article |
URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/9087 |
Aparece en las colecciones: | Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Pages from 2001_Journal_Vacuum_Science_Technology B_GaAs.pdf | 16.72 kB | Adobe PDF | Visualizar/Abrir |
Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.