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|Title:||Photoluminescence and multiphonon resonant Raman scattering in low-temperature grown ZnO nanostructures|
|Authors:||Kumar, B. |
|Citation:||Kumar, B., Gong, H., Chow, S.Y., Tripathy, S., Hua, Y. (2006). Photoluminescence and multiphonon resonant Raman scattering in low-temperature grown ZnO nanostructures. Applied Physics Letters 89 (7) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2336997|
|Abstract:||The authors report on the optical properties of nanocrystalline ZnO grown at 200°C by radio-frequency magnetron sputtering. The nanocrystalline nature of the films was confirmed by cross-sectional transmission electron microscopy. In these films, ZnO nanocrystals with an average size of about 3-5 nm were embedded in an amorphous matrix. The photoluminescence spectra from such nanostructured thin films show the near-band-edge emissions around 3.3 eV. A redshift of about 8-11 cm-1 is observed in the case of first-order longitudinal-optical (LO) phonon of ZnO in such nanostructures when compared to the LO phonon peak of bulk ZnO. The ultraviolet resonant Raman excitation at 77 K shows multiphonon LO modes up to eighth order. © 2006 American Institute of Physics.|
|Source Title:||Applied Physics Letters|
|Appears in Collections:||Staff Publications|
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