Journalartikel

Jahr der Veröffentlichung: 2012

Zeitschrift: Physical Review B

Bandnummer: 85

Heftnummer: 3

ISSN: 2469-9950

eISSN: 2469-9969

DOI Link: https://doi.org/10.1103/PhysRevB.85.035201

Verlag: American Physical Society

Abstract: 
The origin of exciton-phonon interaction in polar semiconductors is investigated. The relative contributions of Frohlich coupling and deformation potential scattering are identified by analyzing experimentally measured phonon-assisted luminescence using a rigorous many-body approach. Our experiment-theory comparison demonstrates that phonon scattering is significantly influenced by many-body interactions. Frohlich interaction can be strongly suppressed for excitons even when it dominates electronic single particle scattering. The results show that deformation potential scattering dominates the exciton-phonon interaction in ZnO, whereas Frohlich interaction prevails in CdS, and both coupling mechanisms yield almost equal contributions in ZnS.

Harvard-Zitierstil: Chernikov, A., Bornwasser, V., Koch, M., Chatterjee, S., Boettge, C., Feldtmann, T., et al. (2012) Phonon-assisted luminescence of polar semiconductors: Frohlich coupling versus deformation-potential scattering, Physical Review B (condensed matter and materials physics), 85(3), Article 035201. https://doi.org/10.1103/PhysRevB.85.035201

APA-Zitierstil: Chernikov, A., Bornwasser, V., Koch, M., Chatterjee, S., Boettge, C., Feldtmann, T., Kira, M., Koch, S., Wassner, T., Lautenschlaeger, S., Meyer, B., & Eickhoff, M. (2012). Phonon-assisted luminescence of polar semiconductors: Frohlich coupling versus deformation-potential scattering. Physical Review B (condensed matter and materials physics). 85(3), Article 035201. https://doi.org/10.1103/PhysRevB.85.035201