Journalartikel

Jahr der Veröffentlichung: 1990

Seiten: 232-234

Zeitschrift: Journal of Luminescence

Bandnummer: 45

Heftnummer: 1-6

DOI Link: https://doi.org/10.1016/0022-2313(90)90154-4

Verlag: Elsevier

Abstract: 

Energy transfer processes from excitons to deep impurities are investigated by luminescence excitation and absorption spectroscopy. The measured dips and peaks in the excitation spectra indicate a strong competition between different deep centre transitions and are connected with the annihilation mechanism of excitonic polaritons. They can be captured directly by deep impurities from the photonic or excitonic part of the polariton branches, respectively. In addition excitonic polaritons can be absorbed by deep centres after having undergone a multistep process: a polariton can be scattered to another branch and thereby converted from a photon-like to an exciton-like polariton via acoustic phonons. This multistep process is verified by comparing the calculated excitations spectra using the dielectric function and the damping dispersion of excitonic polaritons with our experiments.

Harvard-Zitierstil: Pantke, K., Over, H. and Broser, I. (1990) Energy transfer from excitonic polaritons to deep impurities in CdS, Journal of Luminescence, 45(1-6), pp. 232-234. https://doi.org/10.1016/0022-2313(90)90154-4

APA-Zitierstil: Pantke, K., Over, H., & Broser, I. (1990). Energy transfer from excitonic polaritons to deep impurities in CdS. Journal of Luminescence. 45(1-6), 232-234. https://doi.org/10.1016/0022-2313(90)90154-4