Spectroscopy of Two-Dimensional Excitons in High Magnetic Fields to 30 Tesla

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dc.contributor.advisorKono, Junichiroen_US
dc.creatorKatsutani, Fumiyaen_US
dc.date.accessioned2020-08-14T18:37:57Zen_US
dc.date.available2020-08-14T18:37:57Zen_US
dc.date.created2020-08en_US
dc.date.issued2020-08-13en_US
dc.date.submittedAugust 2020en_US
dc.date.updated2020-08-14T18:37:57Zen_US
dc.description.abstractExcitons are hydrogen-like objects in solids, consisting of an electron and a hole bound together through their mutual Coulomb attraction. They play major roles in determining the optoelectronic properties of semiconductors. Magneto-optical spectroscopy provides valuable information on excitons through observation of diamagnetic shifts and Zeeman splittings, but high magnetic fields are required to observe these effects in two-dimensional semiconductors due to enhanced binding energies compared to bulk systems. We have developed a unique magnetospectroscopy setup to investigate materials in fields up to 30 T. The developed setup allows us to change the sample temperature (between 12 K and 300 K), the field direction (negative or positive), the sample configuration (Faraday or Voigt configurations), and the light source (a pulsed laser or a continuous-wave source). We first demonstrated diamagnetic shifts, Landau quantization, and superfluorescence in an InGaAs quantum well sample. Furthermore, we studied two-dimensional hybrid organic-inorganic halide perovskites, which attract much recent attention due to their promising properties for optoelectronic devices such as solar cells and light-emitting devices. We investigated their magnetooptical properties, observing unique temperature-dependent diamagnetic shifts.en_US
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationKatsutani, Fumiya. "Spectroscopy of Two-Dimensional Excitons in High Magnetic Fields to 30 Tesla." (2020) Diss., Rice University. <a href="https://hdl.handle.net/1911/109210">https://hdl.handle.net/1911/109210</a>.en_US
dc.identifier.urihttps://hdl.handle.net/1911/109210en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectSpectroscopyen_US
dc.subject2D materialen_US
dc.subjectHigh Magnetic Fielden_US
dc.subjectNIRen_US
dc.subjectVisibleen_US
dc.subjectOptoelectronic devicesen_US
dc.subjectExcitonen_US
dc.subjectHybrid organic-inorganic halide perovskitesen_US
dc.titleSpectroscopy of Two-Dimensional Excitons in High Magnetic Fields to 30 Teslaen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentElectrical and Computer Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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