Influence of matrix on third order optical nonlinearity for semiconductor nanocrystals embedded in glass thin films prepared by Rf-sputtering
CdSe nanocrystals were successfully embedded in high index glass films by rf-sputtering technique. All films showed the shift of absorption edge to shorter wavelength compared with that of bulk CdSe, so-called, blue shift, and it was evident that there is a quantum confinement effect in the films. T...
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| Veröffentlicht in: | Journal of non-crystalline solids 2005-04, Vol.351 (10), p.893-899 |
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| container_issue | 10 |
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| container_title | Journal of non-crystalline solids |
| container_volume | 351 |
| creator | Nasu, Hiroyuki Tanaka, Akimasa Kamada, Kenji Hashimoto, Tadanori |
| description | CdSe nanocrystals were successfully embedded in high index glass films by rf-sputtering technique. All films showed the shift of absorption edge to shorter wavelength compared with that of bulk CdSe, so-called, blue shift, and it was evident that there is a quantum confinement effect in the films. The amount of the blue shift depended on the kind of matrix glass as well as the size of embedded CdSe nanocrystals. The third-order optical nonlinearity evaluated by Z-scan technique also depended on the matrix glass. The larger nonlinearity was observed from the matrix glass with higher refractive index. In addition, it was found that the value of shift of absorption edge, or the quantum confinement effect was linearly related to the third-order nonlinearity for CdSe nanocrystals embedded in glass thin films. |
| doi_str_mv | 10.1016/j.jnoncrysol.2005.01.067 |
| format | Article |
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| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Nanocrystals and nanoparticles Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures Physics |
| title | Influence of matrix on third order optical nonlinearity for semiconductor nanocrystals embedded in glass thin films prepared by Rf-sputtering |
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