Emission of Light from Compositionally Graded CdSSe/CdS Heterostructure with Smooth Near-surface Excitonic Potential
| Autor: | A. V. Sel’kin, N. R. Grigorieva |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Surface (mathematics) Materials science Condensed Matter::Other Exciton Heterojunction 02 engineering and technology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Molecular physics Atomic and Molecular Physics and Optics Optical spectra Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Reflection (mathematics) 0103 physical sciences Spontaneous emission 0210 nano-technology Luminescence Morse potential |
| Zdroj: | Semiconductors. 53:2052-2054 |
| ISSN: | 1090-6479 1063-7826 |
| Popis: | The low-temperature (T = 2 K) optical spectra (transmission, reflection and luminescence) of a compositionally graded CdS1 – xSex/CdS heterostructure with a low Se content near the sample surface were studied. The Morse potential model of the near-surface exciton potential well is shown to be in a good agreement with the experimental data on the excitonic reflection and makes it possible to identify the radiative recombination channels of free and localized excitons in the structure under study. |
| Databáze: | OpenAIRE |
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