Optical properties and thermionic emission in solar cells with InAs quantum dots embedded within GaNAs and GaInNAs
| Autor: | Antti Tukiainen, Ville Polojärvi, Mircea Guina, Janne Puustinen, Andreas Schramm, E.-M. Pavelescu, Arto Aho |
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| Rok vydání: | 2015 |
| Předmět: |
Photoluminescence
Materials science Condensed matter physics Condensed Matter::Other business.industry Mechanical Engineering Metals and Alloys Thermionic emission Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics law.invention Condensed Matter::Materials Science Strain engineering Absorption edge Mechanics of Materials law Quantum dot Solar cell Optoelectronics General Materials Science business Quantum well |
| Zdroj: | Scripta Materialia. 108:122-125 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2015.06.033 |
| Popis: | The optical properties of p-i-n solar cells comprised of InAs quantum dots embedded within GaNAs and GaInNAs quantum wells are reported. Strain compensating and mediating GaNAs and GaInNAs layers shift the photoluminescence emission as well as absorption edge of the quantum dots to longer wavelengths. GaNAs and GaInNAs quantum wells contribute also to extending the absorption edge. In addition, the use of GaNAs and GaInNAs layers enhances the thermal escape of electrons from QDs by introducing steps for electrons to the GaAs conduction band. |
| Databáze: | OpenAIRE |
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