Theoretical and experimental investigation of spontaneous emission from GeSn and SiGeSn alloys

POSTER

Abstract

Silicon-based infrared lasers have long been an area of interest, but the realization of such devices has yet to be achieved. Sn-based alloys present a possible solution to this problem. The binary alloy GeSn and the ternary alloy SiGeSn have band gaps in the infrared, and these materials are being grown on Si substrates. Thus these combinations have the capacity for being a cheap and available alternative for lasers/detectors in IR/MIR region. In this work we studied spontaneous emission of the binary/ternary structures both theoretically and experimentally. We use a modified van Roosbroeck-Shockley expression to model the spontaneous emission spectrum from GeSn and SiGeSn, which depends on the band gap, the strain in the material, the excess carrier density, and the temperature. The results of the model are compared to photoluminescence measurements obtained from GeSn and SiGeSn materials, and the model is found to match the experimental data in most cases.

Authors

  • E. Ghanati

    University of Dayton

  • Z. Li

    Electro-Optics Program, University of Dayton, Dayton, OH 45469, University of Dayton

  • Rudrakant Sollapur

    Miami University, The College of Wooster, University of Dayton, Ohio University and Argonne National Laboratory, Argonne National Laboratory, J. Stefen Inst., Slovenia, Ohio University, Institute of Physics, University of Belgrade, The University of Akron, Faculty of Physics, University of Belgrade, Institute for Multidisciplinary Research, University of Belgrade, Faculty of Sciences, University of Novi Sad, Bowling Green State University, Australian National University, Benet lab, Department of Physics and Electro-Optics Program University of Dayton, Dayton, OH 45469, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ, Department of Physics, Arizona State University, Tempe, AZ, Electro-Optics Program, University of Dayton, Dayton, OH 45469, Department of Physics and Astronomy, Youngstown State University, University of Memphis, TN, Union College Barbourville, KY, Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, Arizona State University, Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, Case Western Reserve University, Department of Electrical Engineering and Computer Science, Cleveland, OH, Air Force Research Lab, Materials and Manufacturing Directorate, WPAFB, OH, Ohio Northern Univ, University of Notre Dame, Miami Univ, Leibniz Institute of Photonic Technology e.V.; and Otto Schott Institute of Material Research, Abbe Center of Photonics, Leibniz Institute of Photonic Technology e.V., Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University; and Helmholtz Institute Jena, Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University

  • Rudrakant Sollapur

    Miami University, The College of Wooster, University of Dayton, Ohio University and Argonne National Laboratory, Argonne National Laboratory, J. Stefen Inst., Slovenia, Ohio University, Institute of Physics, University of Belgrade, The University of Akron, Faculty of Physics, University of Belgrade, Institute for Multidisciplinary Research, University of Belgrade, Faculty of Sciences, University of Novi Sad, Bowling Green State University, Australian National University, Benet lab, Department of Physics and Electro-Optics Program University of Dayton, Dayton, OH 45469, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ, Department of Physics, Arizona State University, Tempe, AZ, Electro-Optics Program, University of Dayton, Dayton, OH 45469, Department of Physics and Astronomy, Youngstown State University, University of Memphis, TN, Union College Barbourville, KY, Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, Arizona State University, Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, Case Western Reserve University, Department of Electrical Engineering and Computer Science, Cleveland, OH, Air Force Research Lab, Materials and Manufacturing Directorate, WPAFB, OH, Ohio Northern Univ, University of Notre Dame, Miami Univ, Leibniz Institute of Photonic Technology e.V.; and Otto Schott Institute of Material Research, Abbe Center of Photonics, Leibniz Institute of Photonic Technology e.V., Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University; and Helmholtz Institute Jena, Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University

  • Rudrakant Sollapur

    Miami University, The College of Wooster, University of Dayton, Ohio University and Argonne National Laboratory, Argonne National Laboratory, J. Stefen Inst., Slovenia, Ohio University, Institute of Physics, University of Belgrade, The University of Akron, Faculty of Physics, University of Belgrade, Institute for Multidisciplinary Research, University of Belgrade, Faculty of Sciences, University of Novi Sad, Bowling Green State University, Australian National University, Benet lab, Department of Physics and Electro-Optics Program University of Dayton, Dayton, OH 45469, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ, Department of Physics, Arizona State University, Tempe, AZ, Electro-Optics Program, University of Dayton, Dayton, OH 45469, Department of Physics and Astronomy, Youngstown State University, University of Memphis, TN, Union College Barbourville, KY, Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, Arizona State University, Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, Case Western Reserve University, Department of Electrical Engineering and Computer Science, Cleveland, OH, Air Force Research Lab, Materials and Manufacturing Directorate, WPAFB, OH, Ohio Northern Univ, University of Notre Dame, Miami Univ, Leibniz Institute of Photonic Technology e.V.; and Otto Schott Institute of Material Research, Abbe Center of Photonics, Leibniz Institute of Photonic Technology e.V., Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University; and Helmholtz Institute Jena, Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University

  • Rudrakant Sollapur

    Miami University, The College of Wooster, University of Dayton, Ohio University and Argonne National Laboratory, Argonne National Laboratory, J. Stefen Inst., Slovenia, Ohio University, Institute of Physics, University of Belgrade, The University of Akron, Faculty of Physics, University of Belgrade, Institute for Multidisciplinary Research, University of Belgrade, Faculty of Sciences, University of Novi Sad, Bowling Green State University, Australian National University, Benet lab, Department of Physics and Electro-Optics Program University of Dayton, Dayton, OH 45469, Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ, Department of Physics, Arizona State University, Tempe, AZ, Electro-Optics Program, University of Dayton, Dayton, OH 45469, Department of Physics and Astronomy, Youngstown State University, University of Memphis, TN, Union College Barbourville, KY, Air Force Research Laboratory, Materials and Manufacturing Directorate, WPAFB, OH, Arizona State University, Materials and Manufacturing Directorate, Air Force Research Laboratory, WPAFB, OH 45433, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH, Case Western Reserve University, Department of Electrical Engineering and Computer Science, Cleveland, OH, Air Force Research Lab, Materials and Manufacturing Directorate, WPAFB, OH, Ohio Northern Univ, University of Notre Dame, Miami Univ, Leibniz Institute of Photonic Technology e.V.; and Otto Schott Institute of Material Research, Abbe Center of Photonics, Leibniz Institute of Photonic Technology e.V., Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University; and Helmholtz Institute Jena, Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich Schiller University

  • I. Agha

    University of Dayton, OH, University of Dayton

  • J. Mathews

    University of Dayton