4.8 Article

Quantitative Determination of Native Point-Defect Concentrations at the ppm Level in Un-Doped BaSnO3 Thin Films

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

Perovskite crystal symmetry and oxygen-ion transport: a molecular-dynamics study of perovskite

Elisabeth Robens et al.

Summary: In this study, molecular dynamics simulations were used to calculate oxygen diffusion coefficients in CaTiO3 with different crystal structures, revealing higher activation enthalpy for oxygen diffusion in the orthorhombic structure compared to the cubic structure. The presence of acceptor-type cation defects was found to negatively impact oxygen diffusion, especially in low-symmetry structures. The results provide insights into experimental transport studies, trends for alkaline-earth perovskites, and highlight the advantages of using MD simulations for studying ion migration in distorted perovskite structures.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

Editorial Material Chemistry, Physical

Electrochemical methods for determining ionic charge in solids

Roger A. De Souza et al.

NATURE MATERIALS (2021)

Article Physics, Applied

The importance of singly charged oxygen vacancies for electrical conduction in monoclinic HfO2

Michael P. Mueller et al.

Summary: The conductivity of monoclinic HfO2 varies under different oxygen partial pressures, increasing at high oxygen partial pressures and decreasing at low oxygen partial pressures. This behavior is attributed to hole conduction in oxidizing conditions and electron trapping leading to a decrease in conductivity in reducing conditions.

JOURNAL OF APPLIED PHYSICS (2021)

Article Materials Science, Multidisciplinary

Oxygen transport in single-crystal LaAlO3 substrates

Christian Schwab et al.

Summary: The rates of oxygen incorporation and diffusion in cubic, nominally undoped LaAlO3 were investigated through isotope exchange experiments, yielding diffusion coefficient, exchange coefficient, and space-charge potential. The relatively high activation enthalpy for oxygen diffusion was attributed to vacancies interactions, while the surprisingly low activation enthalpy for oxygen surface exchange was noted despite the material's large band gap.

PHYSICAL REVIEW MATERIALS (2021)

Article Physics, Multidisciplinary

Combined experimental-theoretical study of electron mobility-limiting mechanisms in SrSnO3

Tristan K. Truttmann et al.

Summary: The research demonstrates that epitaxial thin films of perovskite oxide NdxSr1-xSnO3 (SSO) exhibit robust doping and high carrier mobility over a wide range of carrier concentrations, making it a promising candidate for ultra-wide bandgap (UWBG) semiconductors in power electronics applications. The study uses Nd as a donor to modulate carrier concentration successfully, showing the highest room-temperature mobility among all known UWBG semiconductors. The phonon-limited mobility is calculated from first principles and shows agreement with experimental results, predicting potential room-temperature mobility for practical applications.

COMMUNICATIONS PHYSICS (2021)

Article Chemistry, Multidisciplinary

Dopant Segregation Inside and Outside Dislocation Cores in Perovskite BaSnO3 and Reconstruction of the Local Atomic and Electronic Structures

Hwanhui Yun et al.

Summary: Distinct dopant behaviors are identified inside and outside dislocation cores in perovskite BaSnO3 using atomic-resolution electron microscopy, with significant consequences on local atomic and electronic structures. La dopants segregate near dislocation cores under elastic strain, accumulating at different sites depending on the strain, leading to core reconstruction and changes in local electronic structure. Electron energy-loss spectroscopy shows drastic changes in electronic structure ranging from formation of hybridized electronic states to insulator-to-metal transition due to dopant segregation inside and around dislocations.

NANO LETTERS (2021)

Review Materials Science, Multidisciplinary

Transport properties of dislocations in SrTiO3 and other perovskites

Roger A. De Souza

Summary: ABO3 perovskite-type oxides are fascinating materials in solid state sciences, with electrical conduction and ion diffusion being key phenomena. This review focuses on how dislocations affect charge and mass transport in these materials, particularly in SrTiO3, and addresses open questions and critical issues in the field.

CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE (2021)

Article Chemistry, Inorganic & Nuclear

Electrical Conductivity of Halide Perovskites Follows Expectations from Classical Defect Chemistry

Nico Leupold et al.

Summary: This study investigates the electrical properties of halide perovskites by measuring the electrical conductivity of a model material over a range of iodine partial pressures. The results suggest a relationship between electrical conductivity and iodine partial pressure, indicating changes in the perovskite conductivity mechanism. Additionally, the study reveals that iodine vacancies play a dominant role in conductivity at low partial pressures, while holes govern conductivity at higher pressures.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY (2021)

Article Chemistry, Physical

Hopping and clustering of oxygen vacancies in BaTiO3-δ and the influence of the off-centred Ti atoms

F. Cordero et al.

Summary: The diffusion and aggregation of oxygen vacancies in perovskites play important roles in material properties, and their impacts can be revealed by lowering the ferroelectric transition temperature with the introduction of oxygen vacancies in barium titanate. The anelastic relaxation processes due to oxygen vacancies may be partially hidden by the ferroelectric transition in perovskites, but can be uncovered by manipulating the material composition.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Article Physics, Applied

Oxygen vacancies: The (in)visible friend of oxide electronics

F. Gunkel et al.

APPLIED PHYSICS LETTERS (2020)

Article Nanoscience & Nanotechnology

Fully transparent field-effect transistor with high drain current and on-off ratio

Jisung Park et al.

APL MATERIALS (2020)

Review Nanoscience & Nanotechnology

Perovskite oxides as transparent semiconductors: a review

Haiying He et al.

NANO CONVERGENCE (2020)

Article Chemistry, Physical

The surprisingly high activation barrier for oxygen-vacancy migration in oxygen-excess manganite perovskites

Jacqueline M. Boergers et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2020)

Article Chemistry, Multidisciplinary

Separating Electrons and Donors in BaSnO3 via Band Engineering

Abhinav Prakash et al.

NANO LETTERS (2019)

Article Physics, Applied

SIMS study of oxygen diffusion in monoclinic HfO2

Michael P. Mueller et al.

APPLIED PHYSICS LETTERS (2018)

Article Chemistry, Physical

The blocking effect of surface dislocations on oxygen tracer diffusion in SrTiO3

Henning Schraknepper et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2018)

Article Chemistry, Multidisciplinary

The thermodynamics and kinetics of iodine vacancies in the hybrid perovskite methylammonium lead iodide

Denis Barboni et al.

ENERGY & ENVIRONMENTAL SCIENCE (2018)

Article Multidisciplinary Sciences

Wide bandgap BaSnO3 films with room temperature conductivity exceeding 104 S cm -1

Abhinav Prakash et al.

NATURE COMMUNICATIONS (2017)

Article Nanoscience & Nanotechnology

Mobility-electron density relation probed via controlled oxygen vacancy doping in epitaxial BaSnO3

Koustav Ganguly et al.

APL MATERIALS (2017)

Article Nanoscience & Nanotechnology

Adsorption-controlled growth of La-doped BaSnO3 by molecular-beam epitaxy

Hanjong Paik et al.

APL MATERIALS (2017)

Article Materials Science, Multidisciplinary

Prediction of a mobile two-dimensional electron gas at the LaScO3/BaSnO3(001) interface

Tula R. Paudel et al.

PHYSICAL REVIEW B (2017)

Article Physics, Applied

Stability of the oxygen vacancy induced conductivity in BaSnO3 thin films on SrTiO3

H. M. Iftekhar Jaim et al.

APPLIED PHYSICS LETTERS (2017)

Article Chemistry, Multidisciplinary

The Nature of Ion Conduction in Methylammonium Lead Iodide: A Multimethod Approach

Alessandro Senocrate et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2017)

Article Chemistry, Multidisciplinary

Tunable Oxygen Diffusion and Electronic Conduction in SrTiO3 by Dislocation-Induced Space Charge Fields

Kiran K. Adepalli et al.

ADVANCED FUNCTIONAL MATERIALS (2017)

Article Materials Science, Multidisciplinary

First-principles analysis of electron transport in BaSnO3

Karthik Krishnaswamy et al.

PHYSICAL REVIEW B (2017)

Article Nanoscience & Nanotechnology

Computational Study of Oxygen Diffusion along a[100] Dislocations in the Perovskite Oxide SrTiO3

Stephan P. Waldow et al.

ACS APPLIED MATERIALS & INTERFACES (2016)

Article Physics, Applied

Band alignment at epitaxial BaSnO3/SrTiO3(001) and BaSnO3/LaAlO3(001) heterojunctions

Scott A. Chambers et al.

APPLIED PHYSICS LETTERS (2016)

Article Nanoscience & Nanotechnology

High-mobility BaSnO3 grown by oxide molecular beam epitaxy

Santosh Raghavan et al.

APL MATERIALS (2016)

Article Materials Science, Multidisciplinary

Dynamics of the metal-insulator transition of donor-doped SrTiO3

Rene Meyer et al.

PHYSICAL REVIEW B (2016)

Article Chemistry, Multidisciplinary

Oxygen Diffusion in SrTiO3 and Related Perovskite Oxides

R. A. De Souza

ADVANCED FUNCTIONAL MATERIALS (2015)

Article Materials Science, Coatings & Films

Hybrid molecular beam epitaxy for the growth of stoichiometric BaSnO3

Abhinav Prakash et al.

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A (2015)

Article Chemistry, Physical

Oxygen diffusion in single crystal barium titanate

Markus Kessel et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2015)

Article Chemistry, Physical

A Simulation Study of Oxygen-Vacancy Behavior in Strontium Titanate: Beyond Nearest-Neighbor Interactions

Marcel Schie et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2014)

Article Chemistry, Multidisciplinary

Do dislocations act as atomic autobahns for oxygen in the perovskite oxide SrTiO3?

Veronika Metlenko et al.

NANOSCALE (2014)

Article Chemistry, Physical

Complex diffusion behavior of oxygen in nanocrystalline BaTiO3 ceramics

Roger A. De Souza et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2014)

Article Materials Science, Multidisciplinary

Finite-size versus interface-proximity effects in thin-film epitaxial SrTiO3

R. A. De Souza et al.

PHYSICAL REVIEW B (2014)

Article Physics, Multidisciplinary

Intrinsic Mobility Limiting Mechanisms in Lanthanum-Doped Strontium Titanate

Amit Verma et al.

PHYSICAL REVIEW LETTERS (2014)

Article Materials Science, Multidisciplinary

Defect engineering of BaSnO3 for high-performance transparent conducting oxide applications

David O. Scanlon

PHYSICAL REVIEW B (2013)

Article Materials Science, Multidisciplinary

Nonstoichiometry accommodation in SrTiO3 thin films studied by positron annihilation and electron microscopy

D. J. Keeble et al.

PHYSICAL REVIEW B (2013)

Article Materials Science, Multidisciplinary

Ab initio analysis of the defect structure of ceria

T. Zacherle et al.

PHYSICAL REVIEW B (2013)

Article Physics, Applied

High Mobility in a Stable Transparent Perovskite Oxide

Hyung Joon Kim et al.

APPLIED PHYSICS EXPRESS (2012)

Article Materials Science, Multidisciplinary

Behavior of oxygen vacancies in single-crystal SrTiO3: Equilibrium distribution and diffusion kinetics

Roger A. De Souza et al.

PHYSICAL REVIEW B (2012)

Article Chemistry, Physical

Properties of Y-doped BaSnO3 proton conductors

Yanzhong Wang et al.

SOLID STATE IONICS (2012)

Review Electrochemistry

The isotope exchange depth profiling (IEDP) technique using SIMS and LEIS

John A. Kilner et al.

JOURNAL OF SOLID STATE ELECTROCHEMISTRY (2011)

Article Physics, Multidisciplinary

Identification of A- and B-Site Cation Vacancy Defects in Perovskite Oxide Thin Films

D. J. Keeble et al.

PHYSICAL REVIEW LETTERS (2010)

Article Materials Science, Ceramics

A Kroger-Vink Compatible Notation for Defects in Inherently Defective Sublattices

Truls Norby

JOURNAL OF THE KOREAN CERAMIC SOCIETY (2010)

Article Materials Science, Multidisciplinary

Probing Diffusion Kinetics with Secondary Ion Mass Spectrometry

Roger A. De Souza et al.

MRS BULLETIN (2009)

Article Chemistry, Inorganic & Nuclear

Diffusion of Sr and Zr in BaTiO3 single crystals

Sylvia Koerfer et al.

SOLID STATE SCIENCES (2008)

Article Materials Science, Multidisciplinary

Hopping and clustering of oxygen vacancies in SrTiO3 by anelastic relaxation

F. Cordero

PHYSICAL REVIEW B (2007)

Article Materials Science, Multidisciplinary

Structural, photocatalytic, and photophysical properties of perovskite MSnO3 (M = Ca, Sr, and Ba) photocatalysts

Weifeng Zhang et al.

JOURNAL OF MATERIALS RESEARCH (2007)

Article Chemistry, Physical

A new self-consistent empirical interatomic potential model for oxides, silicates, and silica-based glasses

Alfonso Pedone et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2006)

Article Chemistry, Physical

Determining oxygen isotope profiles in oxides with Time-of-Flight SIMS

RA De Souza et al.

SOLID STATE IONICS (2005)

Article Chemistry, Physical

Sr diffusion in undoped and La-doped SrTiO3 single crystals under oxidizing conditions

K Gomann et al.

PHYSICAL CHEMISTRY CHEMICAL PHYSICS (2005)

Article Chemistry, Inorganic & Nuclear

Probing the electronic structures of ternary perovskite and pyrochlore oxides containing Sn4+ or Sb5+

H Mizoguchi et al.

INORGANIC CHEMISTRY (2004)