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Tuning the morphology and optical properties of one dimensional Ag nanomaterials via anodic aluminum oxide template

XUE WEI WANG1,2,* , ZHAO CHENG HE1, TIAN YI WANG1, ZHI HAO YUAN1,3

Affiliation

  1. School of Materials Science & Engineering , Tianjin University of Techn ology, Tianjin 300 384 , People s Republic of China
  2. Tianjin Key Lab for Photoelectric Materials and Devices, Tianjin 300 384 , People s Republic of China
  3. Key Laboratory of Display Materials & Photoelectric Devices (Tianjin University of Technology ), Ministr y of Education, Tianjin 300 384 , People s Republic of China

Abstract

O ne dimensional Ag nanomaterials with different shapes have been prepared using direct current electrodeposition within the confined nanochannels of the anodic alumin um oxide template s The morp hologies and crystal structure s of the straight, Y shape d and graded Ag nanowires are observed by field emission scanning electron microscopy, transmission electron microscopy, and X ray diffractometer. Absorption spectra of Ag nanowires dispersed in the e thanol are measured to reveal the relation between the morphology and the optical properties. The results indicate that the graded Ag nanowires have the higher broad band optical absorption efficiency because the diameter of the graded Ag nanowires continu ously change s from 21 nm to 4 4 nm. These fi ndings provide a viable and convenient route for designing shape controlled nano wire based high performance photonic devices by the surface plasmon resonance of nanostructures..

Keywords

Nanowires, Template synthesis, Electrodeposition, Optical absorption.

Submitted at: Dec. 22, 2012
Accepted at: March 13, 2014

Citation

XUE WEI WANG, ZHAO CHENG HE, TIAN YI WANG, ZHI HAO YUAN, Tuning the morphology and optical properties of one dimensional Ag nanomaterials via anodic aluminum oxide template, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 3-4, pp. 283-287 (2014)