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Photoacoustic study of nanocrystalline silicon produced by mechanical grinding |
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| Authors: | C.M. PoffoJ.C. de Lima,S.M. SouzaD.M. Trichê s,T.A. GrandiR.S. de Biasi |
| Affiliation: | a Departamento de Engenharia Mecânica, Universidade Federal de Santa Catarina, Campus Universitário Trindade, C.P. 476, 88040-900 Florianópolis, Santa Catarina, Brazil b Departamento de Física, Universidade Federal de Santa Catarina, Campus Trindade, C.P. 476, 88040-900 Florianópolis, Santa Catarina, Brazil c Seção de Engenharia Mecânica e de Materiais, Instituto Militar de Engenharia, 22290-270 Rio de Janeiro, RJ, Brazil |
| Abstract: | Mechanical grinding (MG) was used to produce nanocrystalline silicon and its thermal and transport properties were investigated by photoacoustic absorption spectroscopy (PAS). The experimental results suggest that in as-milled nanocrystalline silicon for 10 h the heat transfer through the crystalline and interfacial components is similar, and after annealed at 470 °C the heat transfer is controlled by crystalline component. |
| Keywords: | Semiconductors Nanocrystalline materials Photoacoustic spectroscopy Mechanical grinding |
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