Detail publikačního výsledku

Low-Loss Tunable Infrared Plasmons in the High-Mobility Perovskite (Ba,La)SnO3

Yang, HB.; Konecna, A.; Xu, XH.; Cheong, SW.; Garfunkel, E.; de Abajo, FJG.; Batson, PE.

Originální název

Low-Loss Tunable Infrared Plasmons in the High-Mobility Perovskite (Ba,La)SnO3

Anglický název

Low-Loss Tunable Infrared Plasmons in the High-Mobility Perovskite (Ba,La)SnO3

Druh

Článek WoS

Originální abstrakt

BaSnO3 exhibits the highest carrier mobility among perovskite oxides, making it ideal for oxide electronics. Collective charge carrier oscillations known as plasmons are expected to arise in this material, thus providing a tool to control the nanoscale optical field for optoelectronics applications. Here, the existence of relatively long-lived plasmons supported by high-mobility charge carriers in La-doped BaSnO3 (BLSO) is demonstrated. By exploiting the high spatial and energy resolution of electron energy-loss spectroscopy with a focused beam in a scanning transmission electron microscope, the dispersion, confinement ratio, and damping of infrared localized surface plasmons (LSPs) in BLSO nanoparticles are systematically investigated. It is found that LSPs in BLSO exhibit a high degree of spatial confinement compared to those sustained by noble metals and have relatively low losses and high quality factors with respect to other doped oxides. Further analysis clarifies the relation between plasmon damping and carrier mobility in BLSO. The results support the use of nanostructured degenerate semiconductors for plasmonic applications in the infrared region and establish a solid alternative to more traditional plasmonic materials.

Anglický abstrakt

BaSnO3 exhibits the highest carrier mobility among perovskite oxides, making it ideal for oxide electronics. Collective charge carrier oscillations known as plasmons are expected to arise in this material, thus providing a tool to control the nanoscale optical field for optoelectronics applications. Here, the existence of relatively long-lived plasmons supported by high-mobility charge carriers in La-doped BaSnO3 (BLSO) is demonstrated. By exploiting the high spatial and energy resolution of electron energy-loss spectroscopy with a focused beam in a scanning transmission electron microscope, the dispersion, confinement ratio, and damping of infrared localized surface plasmons (LSPs) in BLSO nanoparticles are systematically investigated. It is found that LSPs in BLSO exhibit a high degree of spatial confinement compared to those sustained by noble metals and have relatively low losses and high quality factors with respect to other doped oxides. Further analysis clarifies the relation between plasmon damping and carrier mobility in BLSO. The results support the use of nanostructured degenerate semiconductors for plasmonic applications in the infrared region and establish a solid alternative to more traditional plasmonic materials.

Klíčová slova

monochromated electron energy-loss spectroscopy (EELS); perovskite oxide; STEM-electron energy-loss spectroscopy (EELS); surface plasmons; transparent conducting oxides

Klíčová slova v angličtině

monochromated electron energy-loss spectroscopy (EELS); perovskite oxide; STEM-electron energy-loss spectroscopy (EELS); surface plasmons; transparent conducting oxides

Autoři

Yang, HB.; Konecna, A.; Xu, XH.; Cheong, SW.; Garfunkel, E.; de Abajo, FJG.; Batson, PE.

Rok RIV

2023

Vydáno

01.04.2022

Nakladatel

WILEY-V C H VERLAG GMBH

Místo

WEINHEIM

ISSN

1613-6829

Periodikum

Small

Svazek

18

Číslo

16

Stát

Spolková republika Německo

Strany od

2106897

Strany počet

8

URL

https://onlinelibrary.wiley.com/doi/10.1002/smll.202106897

BibTex

@article{BUT179278,
  author="Yang, HB. and Konecna, A. and Xu, XH. and Cheong, SW. and Garfunkel, E. and de Abajo, FJG. and Batson, PE.",
  title="Low-Loss Tunable Infrared Plasmons in the High-Mobility Perovskite (Ba,La)SnO3",
  journal="Small",
  year="2022",
  volume="18",
  number="16",
  pages="8",
  doi="10.1002/smll.202106897",
  issn="1613-6810",
  url="https://onlinelibrary.wiley.com/doi/10.1002/smll.202106897"
}