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  • Pazoki, MeysamUppsala universitet,Fysikalisk kemi (author)

Mesoporous TiO2 microbead electrodes for solid state dye-sensitized solar cells

  • Article/chapterEnglish2014

Publisher, publication year, extent ...

  • 2014
  • Royal Society of Chemistry (RSC),2014
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:uu-238099
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-238099URI
  • https://doi.org/10.1039/c4ra10049bDOI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Mesoporous TiO2 microbead films have been investigated as working electrodes for solid state dye sensitized solar cells and 3.5% efficiency was achieved for 4 micrometer thick films under 1 sun illumination. Compared to conventional mesoporous solar cells, microbead films have higher porosity, increased open circuit voltage, lower fill factor and current density, faster transport time and lower electron lifetime. Cross sectional scanning electron microscopy results show that the pore filling of a solid hole conductor (spiro-OMeTAD) inside the entire mesoporous bead film is very good even for 4 micrometer thick films. The high porosity of the microbead film allows good penetration of spiro in thick films, while its high surface area ensures good dye coverage. X-ray photoelectron spectroscopy data reveals a lower density of intra-bandgap trap states for microbead films compared to conventional mesoporous TiO2 films, which could be in part responsible for faster transport of electrons and higher voltage in microbead films. Optimization of microbead films for solid state dye sensitized solar cells can be an interesting possibility for highly efficient and relatively thick film solid state solar cells.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Oscarsson, JohanUppsala universitet,Molekyl- och kondenserade materiens fysik(Swepub:uu)johos804 (author)
  • Yang, L. (author)
  • Park, Byung-WookUppsala universitet,Fysikalisk kemi(Swepub:uu)byupa625 (author)
  • Johansson, ErikUppsala universitet,Fysikalisk kemi(Swepub:uu)erjoh367 (author)
  • Rensmo, HåkanUppsala universitet,Molekyl- och kondenserade materiens fysik(Swepub:uu)hakanrm (author)
  • Hagfeldt, AndersUppsala universitet,Fysikalisk kemi(Swepub:uu)andehagf (author)
  • Boschloo, GerritUppsala universitet,Fysikalisk kemi(Swepub:uu)gerrbosc (author)
  • Uppsala universitetFysikalisk kemi (creator_code:org_t)

Related titles

  • In:RSC Advances: Royal Society of Chemistry (RSC)4:91, s. 50295-503002046-2069

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