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dc.contributor.authorChae, Hwaseok
dc.contributor.authorSong, Donghoon
dc.contributor.authorLee, Yong-Gun
dc.contributor.authorSon, Taewook
dc.contributor.authorCho, Woohyung
dc.contributor.authorPyun, Bum
dc.contributor.authorKim, Tea-Yon
dc.contributor.authorLee, Jung Hyun
dc.contributor.authorFabregat-Santiago, Francisco
dc.contributor.authorBisquert, Juan
dc.contributor.authorKang, Yong Soo
dc.identifier.citationCHAE, Hwaseok, et al. Chemical effects of tin oxide nanoparticles in polymer electrolytes-based dye-sensitized solar cells. The Journal of Physical Chemistry C, 2014, 118.30: 16510-16517.ca_CA
dc.description.abstractThe effects on the photovoltaic performance of the incorporation of SnO2 nanoparticles into the polymer of a solid-state dye-sensitized solar cell (DSC) based on the poly(ethylene oxide)/poly(ethylene glycol) dimethyl ether solid electrolyte are studied in this paper. It has been found that the addition of SnO2 nanoparticles to the solid electrolyte produces several key changes in the properties of the solid-state DSC that produced a better performance of the device. Therefore, we have measured an improvement in electrolyte conductivity by a factor of 2, a linear rise in the TiO2 conduction band position, a reduction in the electron recombination rate, and a decrease in charge-transfer resistance at the counterlectrode/electrolyte interface. All these improvements produced an increase in the power conversion efficiency from 4.5 to 5.3% at 1 sun condition, a consequence of the increase of both Voc (oc = open circuit) and Jsc (sc = short circuit) without any sacrifice in FF (fill factor). The origin of these changes has been associated to the strong Lewis acidic character of SnO2 nanoparticles yielding to the formation of a I3– percolation layer for holes at the surface of SnO2 and the reduction of the concentration of free I3– and K+ ions inside the pores of TiO2. From these results, it is concluded that the physicochemical effects of inorganic nanofiller in the polymer electrolyte may also be considered a good route in designing the high efficiency solid-state DSCs employing the polymer electrolyte.ca_CA
dc.format.extent7 p.ca_CA
dc.publisherAmerican Chemical Societyca_CA
dc.relation.isPartOfJ. Phys. Chem. C, 2014, 118 (30ca_CA
dc.rightsCopyright © 2014 American Chemical Societyca_CA
dc.subjectdye-sensitized solar cellsca_CA
dc.subjectphotovoltaic effectsca_CA
dc.subjectsolar cellsca_CA
dc.subjectsolid electrolytesca_CA
dc.titleChemical Effects of Tin Oxide Nanoparticles in Polymer Electrolytes-Based Dye-Sensitized Solar Cellsca_CA

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