Nanobeads of zinc oxide with rhodamine B dye as a sensitizer for dye sensitized solar cell application

P. K. Baviskar, J. B. Zhang, V. Gupta, S. Chand, B. R. Sankapal

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

Cost effective, ruthenium metal free rhodamine B dye has been chemically adsorbed on ZnO films consisting of nanobeads to serve as a photo anode in dye sensitized solar cells. These ZnO films were chemically synthesized at room temperature (27 °C) on to fluorine doped tin oxide (FTO) coated glass substrates followed by annealing at 200 °C. These films consisting of inter connected nanobeads (20-40 nm) which are due to the agglomeration of very small size particles (3-5 nm) leading to high surface area. The film shows wurtzite structure having high crystallinity with optical direct band gap of 3.3 eV. Optical absorbance measurements for rhodamine B dye covered ZnO film revealed the good coverage in the visible region (460-590 nm) of the solar spectrum. With poly-iodide liquid as an electrolyte, device exhibits photon to electric energy conversion efficiency (η) of 1.26% under AM 1.5G illumination at 100 mW/cm2.

Original languageBritish English
Pages (from-to)33-37
Number of pages5
JournalJournal of Alloys and Compounds
Volume510
Issue number1
DOIs
StatePublished - 5 Jan 2011

Keywords

  • Chemical synthesis
  • Dye sensitized solar cell
  • Low temperature
  • Zinc oxide: Rhodamine B dye

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