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      Nanosecond pulsed laser ablated sub-10 nm silicon nanoparticles for improving photovoltaic conversion efficiency of commercial solar cells

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      Author(s)
      Rasouli, H. R.
      Ghobadi, A.
      Ghobadi, T. G. U.
      Ates, H.
      Topalli, K.
      Okyay, Ali Kemal
      Date
      2017
      Source Title
      Journal of Optics (United Kingdom)
      Print ISSN
      2040-8978
      Electronic ISSN
      2040-8986
      Publisher
      Institute of Physics Publishing Ltd.
      Volume
      19
      Issue
      10
      Language
      English
      Type
      Article
      Item Usage Stats
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      313
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      Abstract
      In this paper, we demonstrate the enhancement of photovoltaic (PV) solar cell efficiency using luminescent silicon nanoparticles (Si-NPs). Sub-10 nm Si-NPs are synthesized via pulsed laser ablation technique. These ultra-small Si nanoparticles exhibit photoluminescence (PL) character tics at 425 and 517 nm upon excitation by ultra-violet (UV) light. Therefore, they can act as secondary light sources that convert high energetic photons to ones at visible range. This down-shifting property can be a promising approach to enhance PV performance of the solar cell, regardless of its type. As proof-of-concept, polycrystalline commercial solar cells with an efficiency of ca 10% are coated with these luminescent Si-NPs. The nanoparticle-decorated solar cells exhibit up to 1.64% increase in the external quantum efficiency with respect to the uncoated reference cells. According to spectral photo-responsivity characterizations, the efficiency enhancement is stronger in wavelengths below 550 nm. As expected, this is attributed to down-shifting via Si-NPs, which is verified by their PL characteristics. The results presented here can serve as a beacon for future performance enhanced devices in a wide range of applications based on Si-NPs including PVs and LED applications.
      Keywords
      Efficiency enhancement
      Laser ablation
      Silicon nanoparticle
      Solar cell
      Ablation
      Efficiency
      Image enhancement
      Laser ablation
      Light
      Light emitting diodes
      Light sources
      Luminescence
      Nanoparticles
      Pulsed lasers
      Silicon
      Solar cells
      Solar power generation
      Ultrafast lasers
      Efficiency enhancement
      External quantum efficiency
      Future performance
      Nanosecond pulsed laser
      Photoresponsivity
      Photovoltaic conversion
      Silicon nanoparticles
      Solar cell efficiencies
      Silicon solar cells
      Permalink
      http://hdl.handle.net/11693/37166
      Published Version (Please cite this version)
      http://dx.doi.org/10.1088/2040-8986/aa84dd
      Collections
      • Department of Electrical and Electronics Engineering 3868
      • Institute of Materials Science and Nanotechnology (UNAM) 2098
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