Interface Structure, Band Alignment, and Built-In Potentials at LaFeO3/n-SrTiO3 Heterojunctions

doi:https://doi.org/10.1103/PhysRevLett.117.226802

Title: Interface Structure, Band Alignment, and Built-In Potentials at ${LaFeO}_{3} / n - {SrTiO}_{3}$ Heterojunctions

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Abstract

We demonstrate that LaFeO ₃/n-SrTiO ₃(001) heterojunctions engineered to have opposite interface polarities exhibit very similar band offsets and built-in potentials within the LaFeO ₃ layer of the same sign. However, heterojunctions with the TiO20-LaO+ interface structure attract electronic charge from the n-STO substrate, whereas those with the SrO0-FeO2-1 interface structure do not. These results suggest that the latter would more effectively facilitate photogenerated electron-hole pair separation than the former, an important result for photoelectrochemical water splitting

Authors:: Comes, Ryan; Chambers, Scott

Publication Date:: 2016-11-22

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1339821

Report Number(s):: PNNL-SA-119599
Journal ID: ISSN 0031-9007; PRLTAO; 48341; KC0203020

DOE Contract Number:: AC05-76RL01830

Resource Type:: Journal Article

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 117; Journal Issue: 22; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Environmental Molecular Sciences Laboratory

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                    Comes, Ryan, and Chambers, Scott. Interface Structure, Band Alignment, and Built-In Potentials at LaFeO3/n-SrTiO3 Heterojunctions.  United States: N. p., 2016. 
        Web.  doi:10.1103/PhysRevLett.117.226802.

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                    Comes, Ryan, & Chambers, Scott. Interface Structure, Band Alignment, and Built-In Potentials at LaFeO3/n-SrTiO3 Heterojunctions.  United States.  https://doi.org/10.1103/PhysRevLett.117.226802

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                    Comes, Ryan, and Chambers, Scott. Tue .  
        "Interface Structure, Band Alignment, and Built-In Potentials at LaFeO3/n-SrTiO3 Heterojunctions".  United States.  https://doi.org/10.1103/PhysRevLett.117.226802.

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@article{osti_1339821,

  title        = {Interface Structure, Band Alignment, and Built-In Potentials at LaFeO3/n-SrTiO3 Heterojunctions},

  author       = {Comes, Ryan and Chambers, Scott},

  abstractNote = {We demonstrate that LaFeO3/n-SrTiO3(001) heterojunctions engineered to have opposite interface polarities exhibit very similar band offsets and built-in potentials within the LaFeO3 layer of the same sign. However, heterojunctions with the TiO20-LaO+ interface structure attract electronic charge from the n-STO substrate, whereas those with the SrO0-FeO2-1 interface structure do not. These results suggest that the latter would more effectively facilitate photogenerated electron-hole pair separation than the former, an important result for photoelectrochemical water splitting},

  doi          = {10.1103/PhysRevLett.117.226802},

  url          = {https://www.osti.gov/biblio/1339821},
  journal      = {Physical Review Letters},

  issn         = {0031-9007},

  number       = 22,

  volume       = 117,

  place        = {United States},

  year         = {2016},

  month        = {11}

}

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Title: Interface Structure, Band Alignment, and Built-In Potentials at LaFeO 3 / n - SrTiO 3 Heterojunctions

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Citation Formats

Title: Interface Structure, Band Alignment, and Built-In Potentials at ${LaFeO}_{3} / n - {SrTiO}_{3}$ Heterojunctions