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Title: High-mobility BaSnO{sub 3} grown by oxide molecular beam epitaxy

Journal Article · · APL Materials
DOI:https://doi.org/10.1063/1.4939657· OSTI ID:22499246
; ; ; ; ;  [1]
  1. Materials Department, University of California, Santa Barbara, California 93106-5050 (United States)

High-mobility perovskite BaSnO{sub 3} films are of significant interest as new wide bandgap semiconductors for power electronics, transparent conductors, and as high mobility channels for epitaxial integration with functional perovskites. Despite promising results for single crystals, high-mobility BaSnO{sub 3} films have been challenging to grow. Here, we demonstrate a modified oxide molecular beam epitaxy (MBE) approach, which supplies pre-oxidized SnO{sub x}. This technique addresses issues in the MBE of ternary stannates related to volatile SnO formation and enables growth of epitaxial, stoichiometric BaSnO{sub 3}. We demonstrate room temperature electron mobilities of 150 cm{sup 2} V{sup −1} s{sup −1} in films grown on PrScO{sub 3}. The results open up a wide range of opportunities for future electronic devices.

OSTI ID:
22499246
Journal Information:
APL Materials, Vol. 4, Issue 1; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2166-532X
Country of Publication:
United States
Language:
English

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Oxygen vacancy-assisted recovery process for increasing electron mobility in n-type BaSnO3 epitaxial thin films journal April 2018
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Microstructure characterization of BaSnO3 thin films on LaAlO3 and PrScO3 substrates from transmission electron microscopy journal July 2018
High-mobility two-dimensional electron gas in SrGeO 3 - and BaSnO 3 -based perovskite oxide heterostructures: an ab initio study journal January 2016
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Strain sensitivity of band structure and electron mobility in perovskite BaSnO 3 : first-principles calculation journal January 2019
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Conduction band edge effective mass of La-doped BaSnO 3 journal June 2016
Mobility-electron density relation probed via controlled oxygen vacancy doping in epitaxial BaSnO 3 journal May 2017
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Adsorption-controlled growth of La-doped BaSnO 3 by molecular-beam epitaxy journal November 2017
Frequency- and temperature-dependent dielectric response in hybrid molecular beam epitaxy-grown BaSnO 3 films journal June 2018
Large thickness dependence of the carrier mobility in a transparent oxide semiconductor, La-doped BaSnO 3 journal June 2018
Effects of vacuum annealing on the electron mobility of epitaxial La-doped BaSnO 3 films journal February 2019
Epitaxial integration of high-mobility La-doped BaSnO 3 thin films with silicon journal February 2019
Overlapping growth windows to build complex oxide superlattices journal November 2018
Effect of thickness on metal to semiconductor transition in La doped BaSnO 3 films deposited on high mismatch LSAT substrates journal May 2019
Structural characterization of the LaInO 3 /BaSnO 3 interface via synchrotron scattering journal March 2019
High-temperature-grown buffer layer boosts electron mobility in epitaxial La-doped BaSnO 3 /SrZrO 3 heterostructures journal April 2019
Velocity saturation in La-doped BaSnO 3 thin films journal August 2019
Unraveling the effect of electron-electron interaction on electronic transport in La-doped SrSnO 3 films journal August 2019
Improved optoelectronic properties in solution-processed epitaxial rare-earth-doped BaSnO 3 thin films via grain size engineering journal October 2019
Dopant solubility and charge compensation in La-doped SrSnO 3 films journal October 2019
First-principles study of antisite defects in perovskite stannates journal November 2019
Fully transparent field-effect transistor with high drain current and on-off ratio journal January 2020
Electron mobility in oxide heterostructures journal June 2018
Melt growth and properties of bulk BaSnO 3 single crystals journal December 2016
Non-Fermi liquids in oxide heterostructures journal May 2018
Defect and Optical Properties of Sb doped and hydrogenated BaSnO 3 journal February 2018
Electron effective mass and mobility limits in degenerate perovskite stannate BaSnO 3 journal April 2017
First-principles analysis of electron transport in BaSnO 3 journal May 2017
Origins of n -type doping difficulties in perovskite stannates journal February 2018
Thermopower modulation clarification of the intrinsic effective mass in transparent oxide semiconductor BaSn O 3 journal August 2017
Defect-driven localization crossovers in MBE-grown La-doped SrSn O 3 films journal November 2017
Quantitative subcompound-mediated reaction model for the molecular beam epitaxy of III-VI and IV-VI thin films: Applied to Ga 2 O 3 , In 2 O 3 , and SnO 2 journal December 2018
Wide-voltage-window reversible control of electronic transport in electrolyte-gated epitaxial BaSnO 3 journal July 2019
Investigation of electrical and thermal transport property reductions in La-doped BaSnO 3 films journal September 2019
Magnetism and transport in transparent high-mobility BaSnO 3 films doped with La, Pr, Nd, and Gd journal December 2019
Stoichiometry control in molecular beam epitaxy of BaSn O 3 journal January 2020
Large thickness dependence of the carrier mobility in a transparent oxide semiconductor, La-doped BaSnO3 text January 2018
Buffer layer-less fabrication of high-mobility transparent oxide semiconductor, La-doped BaSnO3 text January 2018
High-temperature-grown buffer layer boosts electron mobility in epitaxial La-doped BaSnO$_3$/SrZrO$_3$ heterostructures text January 2019
Velocity Saturation in La-doped BaSnO3 Thin Films text January 2019
Dopant Solubility, and Charge Compensation in La-doped SrSnO3 Films text January 2019

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