Determination of the optical energy gap of ge1-xsnx alloys at 4k Report as inadecuate




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A. G. Rodríguez ; H. Navarro-Contreras ; M. A. Vidal ;Superficies y vacío 2008, 21 (2)

Author: H. Pérez Ladrón de Guevara

Source: http://www.redalyc.org/


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Superficies y vacío ISSN: 1665-3521 alex@fis.cinvestav.mx Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. México Pérez Ladrón de Guevara, H.; Rodríguez, A.
G.; Navarro-Contreras, H.; Vidal, M.
A. Determination of the optical energy gap of Ge1-xSnx alloys at 4K Superficies y vacío, vol.
21, núm.
2, junio, 2008, pp.
9-11 Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Distrito Federal, México Available in: http:--www.redalyc.org-articulo.oa?id=94215160002 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative ©Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales Superficies y Vacío 21(2) 9-11, junio de 2008 Determination of the optical energy gap of Ge1-xSnx alloys at 4K H.
Pérez Ladrón de Guevara Universidad de Guadalajara-Centro Universitario de los Lagos Enrique Díaz de León s-n col.
Paseo de la Montaña, Lagos de Moreno, Jal.
47460 A.
G.
Rodríguez, H.
Navarro-Contreras, and M.
A.
Vidal Instituto de Investigación en Comunicación Óptica (IICO), Universidad Autónoma de San Luís Potosí Álvaro Obregón 64, San Luís Potosí, S.L.P.
78000 (Recibido: 15 de diciembre de 2007; Aceptado: 9 de abril de 2008) The optical energy gap of Ge1-xSnx alloys (x ≤ 0.14) has been determined from transmittance measurements at 4K using a Fast-Fourier-Transform Infrared Interferometer (FFT-IR) attached to a helium refrigerator.
Our results show that the energy gap changes due to the Sn concentration of the alloys.
We also show that low temperature increases the energy gap transitions for alloys with low Sn concentrations.
By increasing gradually the Sn concentration in alloys the energy gaps decreases, but for x 0.13 alloys, direct energy gap transitions are l...





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