Electrochemical fabrication of anodic aluminum oxide films with encapsulated silver nanoparticles as plasmonic photoconductors

Ben Chao Lau, Chih Yi Liu, Hsing Ying Lin, Chen Han Huang, Hsiang-Chen Chui, Yon-Hua Tzeng

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Two dimensional photoconductors based on anodic aluminum oxide (AAO) films with 80 nm pore size and 100 nm inter-pore spacing encapsulated with silver nanoparticles have been electrochemically fabricated. A 405 nm laser was used to illuminate the encapsulated silver nanoparticles through a transparent AAO barrier layer to induce photocurrent proportional to the laser power and applied voltage between two electrodes. The photoconductivity is attributed to plasmonic coupling among neighboring silver nanoparticles. The AAO barrier layer provides protection to encapsulated silver nanoparticles against possible degradation by the ambient environments and makes the device useful for biomedical sensors and electro-optical applications.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume14
Issue number5
DOIs
Publication statusPublished - 2011 Mar 16

Fingerprint

Photoconducting materials
photoconductors
Aluminum Oxide
Silver
Oxide films
oxide films
aluminum oxides
silver
Nanoparticles
Aluminum
Fabrication
nanoparticles
fabrication
barrier layers
porosity
Oxides
Lasers
Photoconductivity
Photocurrents
photoconductivity

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

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abstract = "Two dimensional photoconductors based on anodic aluminum oxide (AAO) films with 80 nm pore size and 100 nm inter-pore spacing encapsulated with silver nanoparticles have been electrochemically fabricated. A 405 nm laser was used to illuminate the encapsulated silver nanoparticles through a transparent AAO barrier layer to induce photocurrent proportional to the laser power and applied voltage between two electrodes. The photoconductivity is attributed to plasmonic coupling among neighboring silver nanoparticles. The AAO barrier layer provides protection to encapsulated silver nanoparticles against possible degradation by the ambient environments and makes the device useful for biomedical sensors and electro-optical applications.",
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Electrochemical fabrication of anodic aluminum oxide films with encapsulated silver nanoparticles as plasmonic photoconductors. / Lau, Ben Chao; Liu, Chih Yi; Lin, Hsing Ying; Huang, Chen Han; Chui, Hsiang-Chen; Tzeng, Yon-Hua.

In: Electrochemical and Solid-State Letters, Vol. 14, No. 5, 16.03.2011.

Research output: Contribution to journalArticle

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T1 - Electrochemical fabrication of anodic aluminum oxide films with encapsulated silver nanoparticles as plasmonic photoconductors

AU - Lau, Ben Chao

AU - Liu, Chih Yi

AU - Lin, Hsing Ying

AU - Huang, Chen Han

AU - Chui, Hsiang-Chen

AU - Tzeng, Yon-Hua

PY - 2011/3/16

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AB - Two dimensional photoconductors based on anodic aluminum oxide (AAO) films with 80 nm pore size and 100 nm inter-pore spacing encapsulated with silver nanoparticles have been electrochemically fabricated. A 405 nm laser was used to illuminate the encapsulated silver nanoparticles through a transparent AAO barrier layer to induce photocurrent proportional to the laser power and applied voltage between two electrodes. The photoconductivity is attributed to plasmonic coupling among neighboring silver nanoparticles. The AAO barrier layer provides protection to encapsulated silver nanoparticles against possible degradation by the ambient environments and makes the device useful for biomedical sensors and electro-optical applications.

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