| Journal: | Superficies y vacío |
| Database: | PERIÓDICA |
| System number: | 000366185 |
| ISSN: | 1665-3521 |
| Authors: | Pérez Ladrón de Guevara, H1 Rodríguez, A. G2 Navarro Contreras, H2 Vidal, M. A2 |
| Institutions: | 1Universidad de Guadalajara, Centro Universitario de los Lagos, Lagos de Moreno, Jalisco. México 2Universidad Autónoma de San Luis Potosí, Instituto de Investigación en Comunicación Optica, San Luis Potosí. México |
| Year: | 2008 |
| Season: | Jun |
| Volumen: | 21 |
| Number: | 2 |
| Pages: | 9-11 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | 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 lower than energy gap obtained at room temperature. These results are according to the theory predicted results at low temperatures |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería de materiales, Aleaciones, Pulverización catódica, Brecha de energía, Germanio-estaño |
| Keyword: | Engineering, Materials engineering, Alloys, Sputtering, Energy gap, Germanium-tin |
| Full text: | Texto completo (Ver HTML) |
