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      Comparative study of thin film n-i-p a-Si: H solar cells to investigate the effect of absorber layer thickness on the plasmonic enhancement using gold nanoparticles

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      Author
      Islam, K.
      Chowdhury F.I.
      Okyay, Ali Kemal
      Nayfeh, A.
      Date
      2015
      Source Title
      Solar Energy
      Print ISSN
      0038092X
      Publisher
      Elsevier Ltd
      Volume
      120
      Pages
      257 - 262
      Language
      English
      Type
      Article
      Item Usage Stats
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      110
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      Abstract
      In this paper, the effect of gold nanoparticles on n-i-p a-Si:H solar cells with different intrinsic layer (i-layer) thicknesses has been studied. 100nm and 500nm i-layer based n-i-p a-Si:H solar cells were fabricated and colloidal gold (Au) nanoparticles dispersed in water-based solution were spin-coated on the top surface of the solar cells. The Au nanoparticles are of spherical shape and have 100nm diameter. Electrical and quantum efficiency measurements were carried out and the results show an increase in short-circuit current density (J<inf>sc</inf>), efficiency and external quantum efficiency (EQE) with the incorporation of the nanoparticles on both cells. J<inf>sc</inf> increases from 5.91mA/cm2 to 6.5mA/cm2 (~10% relative increase) and efficiency increases from 3.38% to 3.97% (~17.5% relative increase) for the 100nm i-layer solar cell after plasmonic enhancement whereas J<inf>sc</inf> increases from 9.34mA/cm2 to 10.1mA/cm2 (~7.5% relative increase) and efficiency increases from 4.27% to 4.99% (~16.9% relative increase) for the 500nm i-layer cell. The results show that plasmonic enhancement is more effective in 100nm than 500nm i-layer thickness for a-Si:H solar cells. Moreover, the results are discussed in terms of light absorption and electron hole pair generation. © 2015 Elsevier Ltd.
      Keywords
      Nanoparticles
      Photovoltaics
      Plasmonic
      Solar cells
      Thin-film
      Efficiency
      Electromagnetic wave absorption
      Fiber optic sensors
      Film thickness
      Gold coatings
      Light absorption
      Metal nanoparticles
      Nanoparticles
      Plasmons
      Quantum efficiency
      Silicon
      Silicon solar cells
      Solar cells
      Solar power generation
      Thin films
      Comparative studies
      Efficiency increase
      Electron-hole pair generation
      External quantum efficiency
      Photovoltaics
      Plasmonic
      Quantum Efficiency measurements
      Water-based solutions
      Gold
      Permalink
      http://hdl.handle.net/11693/20848
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/j.solener.2015.07.018
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      • Department of Electrical and Electronics Engineering 3524
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