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相关概念视频

Photoelectric Effect02:26

Photoelectric Effect

When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
Carrier Generation and Recombination01:22

Carrier Generation and Recombination

Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...

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相关实验视频

Updated: Jul 16, 2026

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires

Published on: December 11, 2013

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从铜纳米粒子片中产生光体诱导的等离子电流.

Daniel R Pierce1, Lahari Saha1, Chris D Geddes1

  • 1Institute of Fluorescence, and Department of Chemistry and Biochemistry, University of Maryland, Baltimore County, 701 E Pratt St, Baltimore, Maryland 21202, United States.

ACS omega
|June 17, 2024
PubMed
概括

铜纳米粒子薄膜可以产生化诱导的等离子电流 (FIPC). 这项研究探讨了铜.

科学领域:

  • 塑制剂的使用方法
  • 纳米材料是一种纳米材料.
  • 光电学是指光电子产品.

背景情况:

  • 激发的近场光体与金属纳米粒子薄膜 (MNF) 结合,诱导表面等离子体.
  • 这些表面等离子体在贵金属薄膜 (Ag,Au) 中产生可测量的电流.
  • 为FIPC生产寻求高贵金属的经济有效的替代品.

研究的目的:

  • 调查铜纳米粒子薄膜在产生化物诱导等离子体电流 (FIPC) 的潜力.
  • 分析各种参数对铜膜中FIPC生成的影响.

主要方法:

  • 制造热沉积的铜纳米粒子薄膜.
  • 铜薄膜暴露于激发的近场光体.
  • 铜膜厚度,光极化和溶液导电性的系统变化.
  • 测量产生的等离子体电流和金属增强光 (MEF) 排放.

主要成果:

  • 铜膜证明了产生FIPC的能力.
  • 铜膜厚度显著影响FIPC的产生.
  • 光极化和溶液导电性影响等离子体电流.
  • 金属增强光 (MEF) 排放与FIPC相关.

更多相关视频

Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation
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Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination
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Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination

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相关实验视频

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Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation
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Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation

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Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination
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Preparation of Silver-Palladium Alloyed Nanoparticles for Plasmonic Catalysis under Visible-Light Illumination

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结论:

  • 热沉积的铜纳米粒子薄膜是FIPC生成的可行,低成本的替代方案.
  • 优化薄膜厚度,极化和溶液条件可以提高FIPC.
  • 基于铜的FIPC系统显示出对光电子应用的前景.