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Freestanding light scattering hollow silver spheres prepared by a facile sacrificial templating method and their application in dye-sensitized solar cells

Sharifi, N ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/j.jpowsour.2012.10.002
  3. Publisher: 2013
  4. Abstract:
  5. Hollow silver microspheres are synthesized in an easy and environmentally friendly process by a sacrificial templating method. Carbonaceous microspheres (CMSs) are used as hard templates, which have been synthesized previously by a hydrothermal carbonization process. Hollow silver spheres (HSSs) are synthesized by thermal removal of the core carbon component. The thickness of shell could be controlled by the concentration of precursors. Depending on the thickness, uniform or discontinuous shells are formed. The spheres are coated with SiO 2, and then added into the electrolyte of a dye solar cell. The enhancement of 50% is achieved in short-circuit current density (JSC) due to the scattering and trapping of non-absorbed light inside of the sensitized TiO2 film. In addition, 21% augmentation is observed in the photovoltaic power conversion efficiency (η)
  6. Keywords:
  7. Dye sensitized solar cells ; Chemical synthesis ; Core carbons ; Dye solar cells ; Dye Sensitized solar cell ; Environmentally friendly process ; Hard templates ; Hydrothermal carbonization ; Photovoltaic power ; Silver microspheres ; Silver spheres ; Templating method ; Thermal removal ; TiO ; Conversion efficiency ; Light scattering ; Metals ; Optical properties ; Photoelectrochemical cells ; Spheres ; Thermochemistry ; Titanium dioxide ; Solar cells
  8. Source: Journal of Power Sources ; Volume 225 , 2013 , Pages 46-50 ; 03787753 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0378775312015315