Photoelectrode Optimization of Zinc Oxide Nanoparticle Based Dye-Sensitized Solar Cell by Thermal Treatment
2012 (English)In: International Journal of Electrochemical Science, Vol. 7, no 6, 4988-4999 p.Article in journal (Refereed) Published
Interfacial properties at the photoelectrode of dye-sensitized solar cell (DSSC) play a vital role in determining its efficiency. This research examined the role of annealing temperature on the photoelectrode interfaces properties, and to find the annealing temperature that provides the highest overall solar cell efficiency. The electrical characteristics of the DSSC using ZnO nanoparticles photoelectrode annealed at different temperatures were studied using electrochemical impedance spectroscopy (EIS), and the corresponding I-V characteristics were determined. The highest efficiency of the solar cells was obtained when the photoelectrode was annealed at 400°C. This is mainly due to the enhancement in charge collection by better ZnO crystallinity and reduction of interfacial charge transfer resistance at the ZnO/dye/electrolyte interface. Moreover, the electron recombination between transparent conducting oxide substrate and electrolyte was also revealed for the first time by EIS.
Place, publisher, year, edition, pages
Electrochemical Science Group, Serbia , 2012. Vol. 7, no 6, 4988-4999 p.
IdentifiersURN: urn:nbn:se:kth:diva-176547ISI: 000305267400013ScopusID: 2-s2.0-84862751194OAI: oai:DiVA.org:kth-176547DiVA: diva2:914362
QC 201603312016-03-232015-11-072016-03-31Bibliographically approved