Luminescence properties of (GaAs)l(AlAs)msuperlattices with (l,m) ranging from 1 to 73
| Autor: | K. H. Ploog, T. Isu, De Sheng Jiang, Hans J. Queisser, K. Kelting |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
chemistry.chemical_classification
Photoluminescence Materials science Superlattice Analytical chemistry Physics::Optics General Physics and Astronomy Mineralogy Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Threshold energy Condensed Matter::Materials Science chemistry Photoluminescence excitation Ternary operation Electronic band structure Luminescence Inorganic compound |
| Zdroj: | Journal of Applied Physics. 63:845-852 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.340079 |
| Popis: | We present a systematic investigation of (GaAs)l(AlAs)m (l≂m) superlattices by photoluminescence excitation at T=2 K in the energy range of 1.52–2.42 eV. The luminescence spectra of the superlattice samples differ strongly from the spectra of the ternary Al0.5Ga0.5As alloy. The luminescence peak energy is largest for l,m=3 and decreases when l,m 15 display a splitting of light‐ and heavy‐hole states. The optical measurements confirm that this new material has properties which are very different from the ternary Al0.5Ga0.5As alloy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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