2012
DOI: 10.1007/s10008-012-1729-0
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Abstract: A nanocrystalline TiO 2 (anatase) nanosheet exposing mainly the (001) crystal faces was tested as photoanode material in dye-sensitized solar cells. The nanosheets were prepared by hydrothermal growth in HF medium. Good-quality thin films were deposited on F-doped SnO 2 support from the TiO 2 suspension in ethanolic or aqueous media. The anatase (001) face adsorbs a smaller amount of the used dye sensitizer (C101) per unit area than the (101) face which was tested as a reference. The corresponding solar cell w… Show more

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Cited by 68 publications
(79 citation statements)
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References 46 publications
(106 reference statements)
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“…Laskova et al also reported that the surface concentration (0.4-0.5 molecules nm −2 ) of C101 dye [cis-bis(isothiocanate)(4,4 -bis(5-hexylthiophene-2-yl)-2,2 -bipyridi-ne)(4-carboxylic acid-4 -carboxylate-2,2 -bipyridine) ruthenium-(II) sodium] was lower on TiO 2 (0 0 1) nanosheets than that on TiO 2 (1 0 1) nanoparticles (0.7-0.8 molecules nm −2 ) [61]. Recent first-principle theoretical calculations suggested that the observed smaller dye coverage on the {0 0 1} facets than that on the {1 0 1} facets is a consequence of a partial contact of the thiophene and alkyl bipyridine substituents of C101 with the TiO 2 surface [59].…”
Section: Dye-sensitized H 2 Evolution Under Visible-light Irradiationmentioning
confidence: 89%
“…Laskova et al also reported that the surface concentration (0.4-0.5 molecules nm −2 ) of C101 dye [cis-bis(isothiocanate)(4,4 -bis(5-hexylthiophene-2-yl)-2,2 -bipyridi-ne)(4-carboxylic acid-4 -carboxylate-2,2 -bipyridine) ruthenium-(II) sodium] was lower on TiO 2 (0 0 1) nanosheets than that on TiO 2 (1 0 1) nanoparticles (0.7-0.8 molecules nm −2 ) [61]. Recent first-principle theoretical calculations suggested that the observed smaller dye coverage on the {0 0 1} facets than that on the {1 0 1} facets is a consequence of a partial contact of the thiophene and alkyl bipyridine substituents of C101 with the TiO 2 surface [59].…”
Section: Dye-sensitized H 2 Evolution Under Visible-light Irradiationmentioning
confidence: 89%
“…Hence, the V OC is enhanced either by (i) upshift of E CB or by (ii) downshift of W redox (this means by enhancement of the mediator's redox potential in the electrochemical scale). In the first case, the available shifts in band energetics are limited to tens to hundreds of meV through engineering of the TiO 2 structure [18] or by electrolyte additives [9,10] but the engineering of the mediator's W redox is theoretically limited only by the electrochemical potential of the dye's ground state, which is usually near 1 V vs. SHE. However, small overpotential (≈ 0.1 to 0.2 V) is needed as a driving force for dye regeneration [7,9,10,19].…”
Section: Introductionmentioning
confidence: 99%
“…The synthesis of anatase enriched with (0 0 1) facets [26] triggered deeper investigations of orientation-dependent effects in nanocrystalline anatase materials. They provided various inputs for photocatalysis [33][34][35], DSCs [36][37][38][39][40] and Li-ion batteries [31,41,42]. These results also activated theoretical studies to explain the observed differences between (1 0 1) and (0 0 1) facets [32,[43][44][45][46].…”
Section: Introductionmentioning
confidence: 68%