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Record: oai:ARNO:314313

AuthorsS. Minissale, N.Q. Vinh, W. de Boer, M.S. Bresler, T. Gregorkiewicz
TitleMicroscopic evidence for role of oxygen in luminescence of Er3+ ions in Si: Two-color and pump-probe spectroscopy
JournalPhysical Review B
FacultyFaculty of Science
Institute/dept.FNWI: Van der Waals-Zeeman Institute (WZI)
AbstractInfluence of oxygen on optical activity and thermal stability of the 1.5 µm emission of Er3+ ions in Si is well documented. Here we support this predominantly phenomenological notion with microscopic evidence. Using two-color and pump-probe spectroscopy with a free-electron laser we establish a direct link between the 1.5 µm emission from Er3+ ions and the 9 µm vibrational band of interstitial oxygen in Si. We show that: i) intensity of the 1.5 µm emission quenches when the 9 µm oxygen vibration is resonantly excited, and ii) the lifetime of the 9 µm vibrational band is affected by Er presence. Both findings evidence microscopic relation of interstitial oxygen and Er and their close proximity in Si matrix.
Document typeArticle
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