Efficiency enhancements in Ag nanoparticles-SiO2-TiO2 sandwiched structure via plasmonic effect-enhanced light capturing

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• 作者：Jinxia Xu (1) (4)
  Xiangheng Xiao (1) (2)
  Andrey L Stepanov (3)
  Fen Ren (1) (2)
  Wei Wu (1)
  Guangxu Cai (1)
  Shaofeng Zhang (1)
  Zhigao Dai (1)
  Fei Mei (4)
  Changzhong Jiang (1) (2)
  
• 关键词：Plasmonic effect ; Ion implantation ; Ag nanoparticles ; Photocatalysis
• 刊名：Nanoscale Research Letters
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：8
• 期：1
• 全文大小：546KB
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• 作者单位：Jinxia Xu (1) (4)
  Xiangheng Xiao (1) (2)
  Andrey L Stepanov (3)
  Fen Ren (1) (2)
  Wei Wu (1)
  Guangxu Cai (1)
  Shaofeng Zhang (1)
  Zhigao Dai (1)
  Fei Mei (4)
  Changzhong Jiang (1) (2)
  
  1. Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072, People鈥檚 Republic of China
  4. School of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan, 430068, People鈥檚 Republic of China
  2. Center for Electron Microscopy and Hubei Nuclear Solid Physics Key Laboratory, Wuhan University, Wuhan, 430072, People鈥檚 Republic of China
  3. Kazan Physical-Technical Institute, Russian Academy of Sciences, Kazan, 420029, Russia
  
• ISSN：1556-276X

文摘

TiO2-SiO2-Ag composites are fabricated by depositing TiO2 films on silica substrates embedded with Ag nanoparticles. Enhancement of light absorption of the nanostructural composites is observed. The light absorption enhancement of the synthesized structure in comparison to TiO2 originated from the near-field enhancement caused by the plasmonic effect of Ag nanoparticles, which can be demonstrated by the optical absorption spectra, Raman scattering investigation, and the increase of the photocatalytic activity. The embedded Ag nanoparticles are formed by ion implantation, which effectively prevents Ag to be oxidized through direct contact with TiO2. The suggested incorporation of plasmonic nanostructures shows a great potential application in a highly efficient photocatalyst and ultra-thin solar cell.