Homogeneous linewidth of the direct exciton in a type-II ZnSe/BeTe quantum well
| Autor: | Th. Litz, Dmitri R. Yakovlev, F. Fischer, V. P. Kochereshko, U. Zehnder, Alexey V. Platonov, W. Ossau, G. Landwehr, Andreas Waag |
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| Rok vydání: | 1998 |
| Předmět: |
Photoluminescence
Condensed matter physics Condensed Matter::Other Chemistry Phonon Exciton Physics::Optics Heterojunction Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Inorganic Chemistry Condensed Matter::Materials Science Laser linewidth Materials Chemistry Photoluminescence excitation Quantum well |
| Zdroj: | Journal of Crystal Growth. :801-805 |
| ISSN: | 0022-0248 |
| Popis: | We present an optical study of novel ZnSe/BeTe heterostructures with a type-II band alignment based on beryllium chalcogenides. A strong exciton transition involving a confined electron and a quasibound hole state (both in the ZnSe layer) is observed in photoluminescence, photoluminescence excitation and reflectivity spectra. This exciton state is drastically broadened by increasing temperature due to enhanced exciton—acoustic phonon interaction. Pronounced features related to the quasibound hole states in the ZnSe layer (upto n = 4) are detected. |
| Databáze: | OpenAIRE |
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