Luminescence properties of ZnSe single crystals co-doped with Fe and Cr

Luminescence properties of ZnSe single crystals co-doped with Fe and Cr

The luminescence properties of two co-doped ZnSe:(Cr, Fe) single crystals, grown by the Bridgman method, have been studied using photoluminescence techniques. Structural characterization by high-resolution X-ray diffraction (HR-XRD), electron paramagnetic resonance (EPR) and scanning electron micros...

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Bibliographic Details
Main Authors: K. Lamonova, A. Prokhorov, M. Schmidbauer, A. Kwasniewski, Yu Kazarinov, M. Konuhova, A. Platonenko, Z. Remeš, K. Ridzoňová, M. Buryi
Format: Article
Language:English
Published: Elsevier 2025-02-01
Series:Optical Materials: X
Subjects:
Co-doped ZnSe single crystals
HR-XRD
EPR
Luminescence spectra
DFT calculation
Modified crystal field theory
Online Access:http://www.sciencedirect.com/science/article/pii/S2590147824001050
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Summary:The luminescence properties of two co-doped ZnSe:(Cr, Fe) single crystals, grown by the Bridgman method, have been studied using photoluminescence techniques. Structural characterization by high-resolution X-ray diffraction (HR-XRD), electron paramagnetic resonance (EPR) and scanning electron microscopy (SEM) has revealed that the samples differ in terms of dopant concentration and intrinsic native defects. Analysis of the VIS and near-IR photoluminescence spectra, based on the modified crystal field theory and DFT calculations has shown that Fe and Cr exist in two charge states (+2/+3) and can be located in both tetrahedral and octahedral positions. In the blue light region, quantum dots (QDs) appear. These represent clusters of three Cr-containing octahedral complexes accompanied by Zn vacancies, anticipating the formation of spinel ZnCr2Se4 inclusions in the host chalcogenide ZnSe matrix.
ISSN:2590-1478

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