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Sökning: (WFRF:(Fabregat J)) > (2005-2009)

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1.
  • Fabregat-Santiago, F., et al. (författare)
  • Influence of electrolyte in transport and recombination in dye-sensitized solar cells studied by impedance spectroscopy
  • 2005
  • Ingår i: Solar Energy Materials and Solar Cells. - : Elsevier BV. - 0927-0248 .- 1879-3398. ; 87:04-jan, s. 117-131
  • Tidskriftsartikel (refereegranskat)abstract
    • The main features of the characteristic impedance spectra of dye-sensitized solar cells are described in a wide range of potential conditions: from open to short circuit. An equivalent circuit model has been proposed to describe the parameters of electron transport, recombination, accumulation and other interfacial effects separately. These parameters were determined in the presence of three different electrolytes, both in the dark and under illumination. Shift in the conduction band edge due to the electrolyte composition was monitored in terms of the changes in transport resistance and charge accumulation in TiO2. The interpretation of the current-potential curve characteristics, fill factor, open-circuit photopotential and efficiency in the different conditions, was correlated with this shift and the features of the recombination resistance.
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2.
  • Solano Donado, F., et al. (författare)
  • Self-protection: a novel protection scheme for all-optical packet switching networks
  • 2009
  • Ingår i: [Host publication title missing].
  • Konferensbidrag (refereegranskat)abstract
    • All-optical packet switching designs have evolved in the last years. However, all-optical packet forwarding functionalities are still limited. Several label assignation methods have been studied in order to efficiently use the small label space of the designs. In this paper, we present a novel scheme for label switched path protection for networks with small label spaces, such as all-optical packet switching technologies based on all-optical label swapping. With the purpose of using as fewest labels as possible, the scheme has as basis using the same working paths as backup paths. The scheme is named self-protection. Properties and requirements of the schemes in mention are given in this paper. A brief analysis of the trade-off of the scheme is also provided.
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