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      Laser induced spinodal dewetting of Ag thin films for photovoltaic applications

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      Author
      Sarıtaş, S.
      Özen, E. S.
      Aydınlı, Atilla
      Date
      2013
      Source Title
      Journal of Optoelectronics and Advanced Materials
      Print ISSN
      1454-4164
      Electronic ISSN
      1841-7132
      Publisher
      National Institute of Research and Development for Optoelectronics
      Volume
      15
      Issue
      1-2
      Pages
      10 - 13
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      Plasmonics is a promising approach to enhance light trapping properties of thin-film solar cells. Excitation of surface plasmons is characterised by a strong scattering and an enhancement of the electric field in the vicinity of the metal nanoparticle. These properties can be used to reduce the optical losses due to incident light reflection and to increase the optical absorption within the cell. Absorption can be enhancenced in the required wavelength region by tuning the surface plasmon resonance controlling the nanoparticle's size, shape, and local dielectric environment. Ag nanoparticles obtained by laser induced dewetting of metastable Ag thin films on SiO2 have been characterized. Size and characteristic patterning length dependency of nanoparticles on film thickness have been determined and spinodal dewetting has been identified as the process responsible for nanoparticle formation. The tunability of the plasmon resonance has been demonstrated through the manipulation of particle size and dielectric environment.
      Keywords
      Laser dewetting
      Light trapping photovoltaics
      Plasmonic nanoparticles
      Permalink
      http://hdl.handle.net/11693/21171
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