Resonant excitation of infra-red emission in GaN:

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Abstract

By combining experimental photoluminescence excitation spectroscopy and calculations based on density functional theory and many-body Green’s functions, the most efficient excitation channels of infra-red (IR) emission from Mn-Mg${k}$paramagnetic complexes stabilized in GaN:(Mn,Mg) are here identified. Moreover, a Tanabe-Sugano energy diagram for 3$d^{2}$Mn$ ^{5+}$is reconstructed and Mn-Mg${3}$ are singled out as the predominant configurations responsible for the IR emission. The correlation of intensity of the individual emission lines as a function of temperature and excitation energy, allows assigning them to well defined and specific optical transitions.

Abstract (translated by Google)

URL

https://arxiv.org/abs/1803.02092

PDF

https://arxiv.org/pdf/1803.02092