One-phonon Raman scattering studies of chains of crystalline-Si nanospheres

2019-12-09 03:33:01

Si Raman chains phonon nanospheres

责任者: Kohno, H.;Iwasaki, T.;Mita, Y.;Takeda, S. 单位: Dept. of Phys., Osaka Univ., Japan 来源出处: Journal of Applied Physics(J. Appl. Phys. (USA)),2002/03/01,91(5):3232-5 摘要: Chains of crystalline-Si nanospheres were studied by means of Raman scattering spectroscopy. We found that the one-phonon Raman scattering peak from the chains was asymmetric and broader than that from bulk Si. This phenomenon can be attributed to a phonon confinement in the silicon nanospheres. The phonon confinement became more obvious by decreasing the size of the silicon nanospheres in the chains. We also found that the Si nanospheres in the chains were under compressive stress by the covering oxide layers through the analysis of the Raman shift 关键词: elemental semiconductors;nanostructured materials;Raman spectra;silicon;one-phonon Raman scattering;crystalline-Si nanospheres;phonon confinement;Si