000851089 001__ 851089 000851089 005__ 20210129234730.0 000851089 0247_ $$2doi$$a10.1063/1.5036728 000851089 0247_ $$2Handle$$a2128/19603 000851089 0247_ $$2WOS$$aWOS:000440603600010 000851089 037__ $$aFZJ-2018-04797 000851089 082__ $$a620 000851089 1001_ $$0P:(DE-HGF)0$$aZaumseil, P.$$b0 000851089 245__ $$aThe thermal stability of epitaxial GeSn layers 000851089 260__ $$aMelville, NY$$bAIP Publ.$$c2018 000851089 3367_ $$2DRIVER$$aarticle 000851089 3367_ $$2DataCite$$aOutput Types/Journal article 000851089 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1534398847_18911 000851089 3367_ $$2BibTeX$$aARTICLE 000851089 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000851089 3367_ $$00$$2EndNote$$aJournal Article 000851089 520__ $$aWe report on the direct observation of lattice relaxation and Sn segregation of GeSn/Ge/Si heterostructures under annealing. We investigated strained and partially relaxed epi-layers with Sn content in the 5 at. %-12 at. % range. In relaxed samples, we observe a further strain relaxation followed by a sudden Sn segregation, resulting in the separation of a β-Sn phase. In pseudomorphic samples, a slower segregation process progressively leads to the accumulation of Sn at the surface only. The different behaviors are explained by the role of dislocations in the Sn diffusion process. The positive impact of annealing on optical emission is also discussed. 000851089 536__ $$0G:(DE-HGF)POF3-521$$a521 - Controlling Electron Charge-Based Phenomena (POF3-521)$$cPOF3-521$$fPOF III$$x0 000851089 588__ $$aDataset connected to CrossRef 000851089 7001_ $$0P:(DE-HGF)0$$aHou, Y.$$b1 000851089 7001_ $$0P:(DE-HGF)0$$aSchubert, M. 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