caa a22 4500 46322468X CHVBK 20180405153223.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10853-006-0617-3 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0617-3 Influence of graded interfaces on the exciton energy of type-I and type-II Si/Si1- x Ge x quantum wires [Elektronische Daten] [Andrey Chaves, Jusciane da Costa e Silva, José de King Freire, Marcos Degani, Valder Freire, Gil de Aquino Farias] The exciton properties of Si/Si 1-x Ge x cylindrical quantum wires (QWRs) are calculated using the variational method and taking into account the existence of an interface layer between the materials. We consider two possibilities for the conduction band lineup, type-I and type-II. Our numerical results show that an interfacial fluctuation of 15Å in a Si 0.85 Ge 0.15 (Si0.70Ge0.30) type-I (type-II) wire of 50Å wire radius leads to an exciton energy blue shift of the order of 10 (10) meV. Springer Science+Business Media, LLC, 2007 Chaves Andrey Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut da Costa e Silva Jusciane Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut de King Freire José Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut Degani Marcos Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut Freire Valder Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut de Aquino Farias Gil Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/7(2007-04-01), 2314-2317 0022-2461 42:7<2314 2007 42 10853 https://doi.org/10.1007/s10853-006-0617-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0617-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chaves Andrey Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut NATIONALLICENCE 700 1- da Costa e Silva Jusciane Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut NATIONALLICENCE 700 1- de King Freire José Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut NATIONALLICENCE 700 1- Degani Marcos Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut NATIONALLICENCE 700 1- Freire Valder Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut NATIONALLICENCE 700 1- de Aquino Farias Gil Universidade Federal do Ceará, Fortaleza, Ceará, Brazil aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/7(2007-04-01), 2314-2317 0022-2461 42:7<2314 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer