Optical spectroscopy of near-surface excitonic states
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| Format: | Artículo científico |
| Language: | en |
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Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C.
1999
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| _version_ | 1876487000037523456 |
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| author | J. Madrigal |
| author_facet | J. Madrigal |
| contents | Optical spectroscopy of near-surface excitonic states J. Madrigal H. Azucena Coyotécatl N.R. Grigorieva B.A. Kazennov B.V. Novikov A.V. Sel´kin F. Pérez Rodríguez Física, Astronomía y Matemáticas exciton reflectance luminescence We have studied the low temperature excitonic reflectance and luminescence spectra of CdS1-xSex solid solution with a near-surface excitonic potential well formed by excessive Se. The reflectance spectra were obtained at different angles of incidence for boths-and p polarization components of light. New striking spectral features due to exciton confinement and quantization in the surface region were observed. For various samples, the generalized Morse surface potential was proved to be a good approximation in describing the experimental data. It is shown that the resonance excitonic luminescence is largely governed by the emission from excitations localized in the well 1999 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94200983 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.9 |
| format | Artículo científico |
| id | redalyc_94200983 |
| institution | Redalyc |
| language | en |
| publishDate | 1999 |
| publisher | Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. |
| spellingShingle | Optical spectroscopy of near-surface excitonic states J. Madrigal Física, Astronomía y Matemáticas exciton reflectance luminescence Optical spectroscopy of near-surface excitonic states J. Madrigal H. Azucena Coyotécatl N.R. Grigorieva B.A. Kazennov B.V. Novikov A.V. Sel´kin F. Pérez Rodríguez Física, Astronomía y Matemáticas exciton reflectance luminescence We have studied the low temperature excitonic reflectance and luminescence spectra of CdS1-xSex solid solution with a near-surface excitonic potential well formed by excessive Se. The reflectance spectra were obtained at different angles of incidence for boths-and p polarization components of light. New striking spectral features due to exciton confinement and quantization in the surface region were observed. For various samples, the generalized Morse surface potential was proved to be a good approximation in describing the experimental data. It is shown that the resonance excitonic luminescence is largely governed by the emission from excitations localized in the well 1999 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94200983 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.9 |
| title | Optical spectroscopy of near-surface excitonic states |
| topic | Física, Astronomía y Matemáticas exciton reflectance luminescence |
| url | https://www.redalyc.org/articulo.oa?id=94200983 |