Quantitative investigation of plasmonic hot-electron injection by KPFM

Aoqun Jian; Kai Feng; Huaping Jia; Qianwu Zhang; Shengbo Sang; Xuming Zhang

doi:10.1016/j.apsusc.2019.06.109

Quantitative investigation of plasmonic hot-electron injection by KPFM

Aoqun Jian, Kai Feng, Huaping Jia, Qianwu Zhang, Shengbo Sang, Xuming Zhang

Research output: Journal article publication › Journal article › Academic research › peer-review

17 Citations (Scopus)

Abstract

Hot-electron injection is widely used in plasmonic devices. However, it is still lack of a direct theoretical model for performance prediction. This paper measures the surface potential of Au/TiO₂ film by Kelvin probe force microscope (KPFM) under various conditions, and then develops a theoretical model for quantitative interpretation. The model can well fit the relationship of surface potential versus light power under various irradiation wavelengths. The study in this paper opens the pathway for quantitative characterization of the efficiency of hot-electron injection and sheds light on improving the plasmonic efficiency of photoelectric conversion and photocatalysis.

Original language	English
Pages (from-to)	644-650
Number of pages	7
Journal	Applied Surface Science
Volume	492
DOIs	https://doi.org/10.1016/j.apsusc.2019.06.109
Publication status	Published - 30 Oct 2019

Keywords

Hot-electron injection
Kelvin probe force microscope
Photocatalysis
Surface potential

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
General Physics and Astronomy
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.apsusc.2019.06.109

http://hdl.handle.net/10397/100260

Cite this

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title = "Quantitative investigation of plasmonic hot-electron injection by KPFM",

abstract = "Hot-electron injection is widely used in plasmonic devices. However, it is still lack of a direct theoretical model for performance prediction. This paper measures the surface potential of Au/TiO2 film by Kelvin probe force microscope (KPFM) under various conditions, and then develops a theoretical model for quantitative interpretation. The model can well fit the relationship of surface potential versus light power under various irradiation wavelengths. The study in this paper opens the pathway for quantitative characterization of the efficiency of hot-electron injection and sheds light on improving the plasmonic efficiency of photoelectric conversion and photocatalysis.",

keywords = "Hot-electron injection, Kelvin probe force microscope, Photocatalysis, Surface potential",

author = "Aoqun Jian and Kai Feng and Huaping Jia and Qianwu Zhang and Shengbo Sang and Xuming Zhang",

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doi = "10.1016/j.apsusc.2019.06.109",

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journal = "Applied Surface Science",

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AU - Jian, Aoqun

AU - Feng, Kai

AU - Jia, Huaping

AU - Zhang, Qianwu

AU - Sang, Shengbo

AU - Zhang, Xuming

PY - 2019/10/30

Y1 - 2019/10/30

N2 - Hot-electron injection is widely used in plasmonic devices. However, it is still lack of a direct theoretical model for performance prediction. This paper measures the surface potential of Au/TiO2 film by Kelvin probe force microscope (KPFM) under various conditions, and then develops a theoretical model for quantitative interpretation. The model can well fit the relationship of surface potential versus light power under various irradiation wavelengths. The study in this paper opens the pathway for quantitative characterization of the efficiency of hot-electron injection and sheds light on improving the plasmonic efficiency of photoelectric conversion and photocatalysis.

AB - Hot-electron injection is widely used in plasmonic devices. However, it is still lack of a direct theoretical model for performance prediction. This paper measures the surface potential of Au/TiO2 film by Kelvin probe force microscope (KPFM) under various conditions, and then develops a theoretical model for quantitative interpretation. The model can well fit the relationship of surface potential versus light power under various irradiation wavelengths. The study in this paper opens the pathway for quantitative characterization of the efficiency of hot-electron injection and sheds light on improving the plasmonic efficiency of photoelectric conversion and photocatalysis.

KW - Hot-electron injection

KW - Kelvin probe force microscope

KW - Photocatalysis

KW - Surface potential

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U2 - 10.1016/j.apsusc.2019.06.109

DO - 10.1016/j.apsusc.2019.06.109

M3 - Journal article

AN - SCOPUS:85068503043

SN - 0169-4332

VL - 492

SP - 644

EP - 650

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Quantitative investigation of plasmonic hot-electron injection by KPFM

Abstract

Keywords

ASJC Scopus subject areas

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