Photoluminescence studies of lateral composition modulated short-period AlAs/InAs superlattices
| Autor: | Ray D. Twesten, Eric D. Jones, David M. Follstaedt, J. Mirecki Millunchick, S. R. Lee, Angelo Mascarenhas, S. P. Ahrenkiel, Yong Zhang, John L. Reno, Andrew G. Norman |
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| Rok vydání: | 1999 |
| Předmět: |
Materials science
Photoluminescence Condensed matter physics Band gap Superlattice Alloy Metals and Alloys Physics::Optics Surfaces and Interfaces engineering.material Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Surfaces Coatings and Films Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Lattice constant Amplitude Modulation Materials Chemistry engineering Energy (signal processing) |
| Zdroj: | Thin Solid Films. 357:31-34 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/s0040-6090(99)00470-8 |
| Popis: | We present low temperature photoluminescence data for a series of spontaneous lateral composition modulation in (AlAs){sub m}/(InAs){sub n} short period superlattices on InP with differing average lattice constants, i.e., varying global strain. The low temperature photoluminescence peak energies were found to be much lower than the corresponding energy expected for the equivalent In{sub x}Al{sub 1{minus}x}As alloy. The bandgap energy reductions are found to approach 500 meV and this reduction is found to correlated with the strength of the composition modulation wave amplitude. |
| Databáze: | OpenAIRE |
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