| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000389428 |
| ISSN: | 0103-9733 |
| Authors: | Jabbar Hussein, Mohammed1 Mat Yunus, W. Mahmood1 Kamari, Halimah Mohamed1 Zakaria, Azmi1 |
| Institutions: | 1Universiti Putra Malaysia, Faculty of Science, Serdang, Selangor. Malasia |
| Year: | 2015 |
| Season: | Oct |
| Volumen: | 45 |
| Number: | 5 |
| Pages: | 518-524 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | Thermal diffusivity (TD) of p-Si and Ag/p-Si samples were measured by photoacoustic technique using open photoacoustic cell (OPC). The samples were annealed by heating them at 960, 1050, 1200, and 1300 °C for 3 h in air. The thermal diffusivity of Ag-coated samples was obtained by fitting the photoacoustic experimental data to the thermally thick equation for Rosencwaig and Gersho (RG) theory. For the single layer samples, the thermal diffusivity can be obtained by fitting as well as by obtaining the critical frequency fc. In this study, the thermal diffusivity of the p-Si samples increased with increasing the annealing temperature. The thermal diffusivity of the Ag/p-Si samples, after reaching the maximum value of about 2.73 cm2 /s at a temperature of 1200 °C, decreased due to the silver complete melt in the surface of the silicon |
| Disciplines: | Física y astronomía |
| Keyword: | Acústica, Física, Semiconductores, Difusividad térmica, Técnica fotoacústica |
| Keyword: | Physics and astronomy, Acoustics, Physics, Semiconductors, Thermal diffusivity, Photoacoustic techniques |
| Full text: | Texto completo (Ver PDF) |
