Porous CdS-sensitized electrochemical solar cells

Yong Hui Lee, Sang Hyuk Im, Jong Heun Lee, Sang Il Seok

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

In inorganic semiconductor (such as CdS)-sensitized solar cells, isolated nanoparticles (including quantum dots) or Porous semiconducting layers are particularly efficient and effective in extracting charge carriers generated by solar energy, without a serious recombination among sensitizers. In this study, porously structured CdS was formed by spray pyrolysis deposition (SPD) using an excess cadmium chloride and thiourea aqueous mixture solution onto an mp-TiO2 substrate pre-heated to 450 °C in an air atmosphere and subsequent washing of the excess cadmium chloride using deionized water. As expected, the power conversion efficiency of a photoelectrochemical solar cell fabricated with the porous CdS was greatly improved, to 1.71%, the highest efficiency ever reported for CdS-sensitized solar cells employing polysulfide as an electrolyte. This improvement in performance is attributed to the efficient transport of the charge carriers generated in CdS.

Original languageEnglish
Pages (from-to)2087-2091
Number of pages5
JournalElectrochimica Acta
Volume56
Issue number5
DOIs
Publication statusPublished - 2011 Feb 1

Keywords

  • Cadmium sulfide
  • Photoelectrochemical solar cell
  • Selective etching
  • Spray pyrolysis deposition
  • Thermal annealing

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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