作者: S. Stefanov , J. C. Conde , A. Benedetti , C. Serra , J. Werner
DOI: 10.1063/1.3692175
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摘要: Synthesis of heteroepitaxial germanium tin (GeSn) alloys using excimer laser processing a thin 4 nm Sn layer on Ge has been demonstrated and studied. Laser induced rapid heating, subsequent melting, re-solidification processes at extremely high cooling rates have experimentally achieved also simulated numerically to optimize the parameters. “In situ” measured sample reflectivity with nanosecond time resolution was used as feedback for simulations directly correlated alloy composition. Detailed characterization GeSn after optimization conditions indicated substitutional concentration up 1% in matrix.