Preparation and characterization of Eosin B- and Erythrosin J-sensitized nanostructured NiO thin film photocathodes

Vera, Francisca; Schrebler, Ricardo; Muñoz, Eduardo; Suárez, C; Cury, P.; Gómez, H.; Córdova, Ricardo; Marotti, Ricardo E.; Dalchiele, Enrique A.

doi:10.1016/j.tsf.2005.04.052

Cited by 107 publications

(64 citation statements)

References 14 publications

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“…NiO x coatings were sensitized with 0.3 mM Erythrosin B (ERY) dye [11,17,22], in a 99.8 % ethanol solution for 24 h. The dye adsorption was investigated in transmission mode using an AnalytikJena Specord 210 UV-vis spectrophotometer in the wavelength range of 350-700 nm.…”

Section: Dye Sensitization Uv-vis Measurements and Iv-characteristicsmentioning

confidence: 99%

“…Moreover, NiO x is considered as a model semiconductor substrate due to its wide band-gap energy range from 3.6 to 4.0 eV depending on the amount of Ni(III) sites [15]. NiO x films have been fabricated by various techniques which include spin coating, dipping, electrochemical deposition [17], magnetron sputtering [18][19][20] and sol-gel [21][22][23][24][25]. With the exception of electrochemical techniques, the other deposition methods require subsequent thermal treatments in order to enhance the density of the coatings [21][22][23][24][25][26], to obtain crystalline structure in the as deposited sputtered coatings [26] and to remove the binder in the case of sol-gel deposited coatings [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Application of a novel microwave plasma treatment for the sintering of nickel oxide coatings for use in dye-sensitized solar cells

Awais

Rahman

MacElroy

et al. 2011

Surface and Coatings Technology

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In this study the use of microwave plasma sintering of nickel oxide (NiO x ) particles for use as ptype photoelectrode coatings in dye-sensitized solar cells (DSSCs) is investigated. NiO x was chosen as the photocathode for this application due to its stability, wide band gap and p-type 2 nature. For high light conversion efficiency DSSCs require a mesoporous structure exhibiting a high surface area. This can be achieved by sintering particles of NiO x onto a conductive substrate. In this study the use of both 2.45 GHz microwave plasma and conventional furnace sintering were compared for the sintering of the NiO x particles. Coatings 1 to 2.5 µm thick were obtained from the sintered particles (mean particle size of 50 nm) on 3 mm thick fluorine-doped tin oxide (FTO) coated glass substrates. Both the furnace and microwave plasma sintering treatments were carried out at ~450 ºC over a 5 minute period. Dye sensitization was carried out using Erythrosin B and the UV-vis absorption spectra of the NiO x coatings were compared. A 44% increase in the level of dye adsorption was obtained for the microwave plasma sintered samples as compared to that obtained through furnace treatments. While the photovoltaic performance of the DSSC fabricated using the microwave plasma treated NiO x coatings exhibited a tenfold increase in the conversion efficiency in comparison to the furnace treated samples. This enhanced performance was associated with the difference in the mesoporous structure of the sintered NiO x coatings.

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Section: Dye Sensitization Uv-vis Measurements and Iv-characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of a novel microwave plasma treatment for the sintering of nickel oxide coatings for use in dye-sensitized solar cells

Awais

Rahman

MacElroy

et al. 2011

Surface and Coatings Technology

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“…As shown recently SnO 2 appears to be one of the more promising anodic electro chromic materials [7]. Several methods have been used to prepare tin oxide thin films such as sputtering [8,9,[10][11], electron beam evaporation [12], sol gel a e-mail : fatima_dahou@yahoo.fr [13], dip coating, spin coating, electro deposition [14], chemical bath deposition [15,16,17] and also spray pyrolysis [15,[18][19]. It has been shown that SnO 2 films with good electronic properties can be achieved by spray pyrolysis depending on growing parameters such as precursor concentration [19] and substrate temperature [20].Smart windows, dye sensitized solar cells need, for economical reason, cheap deposition technique.…”

Section: Introductionmentioning

confidence: 99%

Realization of tin oxide like anode for the manufacture of the organic solar cells

Mohammed-Krarroubi

Dahou

Barkat

et al. 2012

EPJ Web of Conferences

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Abstract.The transparent oxides such as SnO 2 , In 2 O 3 and ZnO continue to arouse a private interest for their various applications. The objective of the various studies being to carry out the layers which are simultaneously most transparent and most conducting possible. Thus in the field of the solar spectrum, the transmission of the layers must be higher than 80% and their conductivity exceeding 10 3 (Ohm.cm) -1 .Their transparency which is related to the value of their forbidden band must be higher than 3.7 e V. Their electric properties as for them depend on the composition of the layers and a possible doping. In this work, one characterized layers of SnO 2 deposited by chemical pulverization, one carried out measurements by, electronic scan microscopy, diffraction of x-rays and also of the optical measurements and electronic. It results from it that the layers are conducting and transparent in the visible one but they are relatively rough, following its characterizations, one carried out organic photovoltaic cells using these layers of SnO 2 and also of the commercial ITO like anode in these components. More particularly one was interested in the influence of the presence of a fine layer of gold between the anode and organic material.

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“…Tandem or hybrid cells having two metal-oxide electrodes in one cell have been reported, where the two metal-oxide layers were stained with different dyes. [17][18][19] A hybrid cell consisting of a top electrode (FTO glass/TiO 2 layer stained with N3)/electrolyte/Pt mesh electrode/electrolyte/a bottom electrode (TiO 2 stained with black dye)/FTO glass] has been reported. The Pt electrode is inserted in an electrolyte layer between the top and bottom electrodes.…”

Section: Introductionmentioning

confidence: 99%

“…16 A tandem cell consisting of a top electrode (FTO glass/TiO 2 stained by N3) and a bottom electrode (NiO stained by Erythrosin B/FTO glass) has been reported. 18,19 We have also reported a tandem cell consisting of a conventional anode as a top electrode and a flexible nanoporous titania sheet as a bottom electrode. 20 The bottom electrode is a self-standing and flexible sheet composed of nanoporous titania layer supported by a protected stainless steel sheet or a glass mesh sheet.…”

Section: Introductionmentioning

confidence: 99%

Transparent conductive oxideless tandem dye-sensitized solar cells consisting of light-splitting structures

et al. 2011

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Abstract. Fiber and pillar tandem dye-sensitized solar cells (DSCs), which do not need transparent conductive oxideless layer tandem cells (TCO-less TAN), are fabricated and their fundamental tandem properties are evaluated. TCO-less TAN cells consist of a light-splitting waveguide and TCO-less DSCs. The TCO-less DSC is composed of a nanoporous titania back-contacted with a porous Ti electrode or a nanoporous titania sheet supported by a stainless steel mesh whose surface was protected with TiO x thin layers. Two kinds of light-splitting structures are introduced. One is a light-splitting structure in which polystyrene particles with different diameters are dispersed in water. The other consists of dichroic mirrors. These light-splitting structures are coupled with TCO-less DSCs stained with dyes absorbing light corresponding to these split lights. Open circuit voltages (V oc ) of these TCO-less tandem DSCs are two times (two tandem structure) or three times (three tandem structure) higher than those of the corresponding single cells, demonstrating that these structures work as tandem cells. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Preparation and characterization of Eosin B- and Erythrosin J-sensitized nanostructured NiO thin film photocathodes

Cited by 107 publications

References 14 publications

Application of a novel microwave plasma treatment for the sintering of nickel oxide coatings for use in dye-sensitized solar cells

Application of a novel microwave plasma treatment for the sintering of nickel oxide coatings for use in dye-sensitized solar cells

Realization of tin oxide like anode for the manufacture of the organic solar cells

Transparent conductive oxideless tandem dye-sensitized solar cells consisting of light-splitting structures

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