One-step electrodeposition of TiO2/dye hybrid films

Wessels, Katrin; Maekawa, Miyuki; Rathouský, Jiřı́; Oekermann, Torsten

doi:10.1016/j.tsf.2006.11.081

Cited by 20 publications

(11 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The method was later modified by other authors such as Natarajan and Nogami 19 as well as Karuppuchamy and co-workers. 20,21 The anodic electrodeposition of TiO 2 from TiCl 3 solution was first suggested by Kavan et al 22 Modification of this method in our group by increasing the deposition temperature and the addition of surfactants 23 or dyes 24 resulted in the direct deposition of crystalline porous rutile films without further heat treatment. A third route for the electrodeposition of TiO 2 films was suggested by Sawatani et al 25 The electrodeposition is carried out from a Ti(IV)-alkoxide stabilized in a basic solution with tetramethylammoniumhydroxide.…”

Section: Introductionmentioning

confidence: 94%

Influence of Calcination Temperature on the Photoelectrochemical and Photocatalytic Properties of Porous TiO₂ Films Electrodeposited from Ti(IV)-Alkoxide Solution

et al. 2008

Self Cite

View full text Add to dashboard Cite

TiO 2 /benzoquinone hybrid films have been electrodeposited anodically from basic Ti(IV)-alkoxide solutions containing hydroquinone. The films were calcined at different temperatures between 350 and 550 °C and investigated in view of applications as photocatalyst and in dye-sensitized solar cells. Thermogravimetry analysis, differential thermo analysis, in situ X-ray diffraction, and transmission electron microscopy show the removal of the benzoquinone and starting crystallization of the TiO 2 between 350 and 400 °C, followed by a further increase in the crystallinity and particle size with increasing calcination temperature, while the specific surface area is decreased due to an increasing pore size as confirmed by Kr adsorption measurements. In dye-sensitized solar cells, the higher crystallinity leads to an improved performance mainly due to improved adsorption of sensitizer dyes up to calcination temperatures of 500 °C, while all films exhibit good electron collection properties as investigated by intensity-modulated photoelectrochemical techniques. The latter can be explained by the presence of conducting pathways provided by the benzoquinone for films calcined at lower temperature and by the presence of crystalline TiO 2 for films calcined at higher temperatures. A further increase of the calcination temperature to 550 °C leads to a decrease in efficiency due to a further decrease in the surface area. In contrast, the highest photocatalytic activity was found for a calcination temperature of 550 °C, indicating the importance of having highly crystalline and pure materials for photocatalytic applications.

show abstract

Section: Introductionmentioning

confidence: 94%

Influence of Calcination Temperature on the Photoelectrochemical and Photocatalytic Properties of Porous TiO₂ Films Electrodeposited from Ti(IV)-Alkoxide Solution

et al. 2008

Self Cite

View full text Add to dashboard Cite

show abstract

“…TiO 2 films can be prepared by several techniques, e.g. by sol-gel routes [4], vapour deposition [5], sputtering [6] or electrodeposition [7][8][9][10][11][12][13][14][15]. Electrodeposition of semiconductor oxides, especially ZnO, has been well investigated during the last years [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…A third method for the electrodeposition of TiO 2 films based on the oxidation of TiCl 3 was first published by Kavan et al [13]. We modified this method by increasing the deposition temperature and the addition of surfactants [14] or dyes [15], which resulted in the direct deposition of crystalline, porous TiO 2 films. The formation of crystalline TiO 2 films at low temperatures (80 • C) enables the use of these films in flexible DSSC.…”

Section: Introductionmentioning

confidence: 99%

Efficiency improvement of dye-sensitized solar cells based on electrodeposited TiO2 films by low temperature post-treatment

Wessels

Wark

Oekermann

2010

Electrochimica Acta

Self Cite

View full text Add to dashboard Cite

“…Since then, dye-sensitized solar cells utilizing nanostructure TiO 2 were developed by a lot of research groups in order to improve the performance of the cell [2][3][4][5][6]. The nanoparticle TiO 2 film can be prepared by various techniques, namely, screen printing, layer-by-layer self-assembly, spin coating, hydrolysis, and electrodeposition.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a nanoparticle TiO2 photoelectrochemical cell utilizing a solid polymeric electrolyte of PAN–PC–LiClO4

Taslim

Rahman

Salleh

et al. 2010

Ionics

View full text Add to dashboard Cite

A nanoparticle TiO 2 solid-state photoelectrochemical cell utilizing as a solid electrolyte of poly (acrylonitrile)-propylene-carbonate-lithium perchlorate (PAN-PC-LiClO 4 ) has been fabricated. The performance of the device has been tested in the dark and under illumination of 100-mW cm −2 light. A nanoparticle TiO 2 film was deposited onto indium tin oxide-covered glass substrate by controlled hydrolysis technique assisted with spin-coating technique. The average grain size for the TiO 2 film is 76 nm. LiClO 4 salt was used as a redox couple. The room temperature conductivity of the electrolyte is 4.2 × 10 −4 S cm −1 . A graphite electrode was prepared onto a glass slide by electron beam evaporation technique. The device shows the rectification property in the dark and shows the photovoltaic effect under illumination. The best J sc and V oc of the device were 2.82 μA cm −2 and V oc of 0.58 V, respectively, obtained at the conductivity of 4.2×10 −4 S cm −1 and intensity of 100 mW cm −2 . The J sc was improved by about three times by introducing nanoparticle TiO 2 and by using a solid electrolyte of PAN-PC-LiClO 4 replacing PVC-PCLiClO 4 in the device. The current transport mechanism of the cell is also presented in this paper.

show abstract

One-step electrodeposition of TiO2/dye hybrid films

Cited by 20 publications

References 10 publications

Influence of Calcination Temperature on the Photoelectrochemical and Photocatalytic Properties of Porous TiO₂ Films Electrodeposited from Ti(IV)-Alkoxide Solution

Influence of Calcination Temperature on the Photoelectrochemical and Photocatalytic Properties of Porous TiO₂ Films Electrodeposited from Ti(IV)-Alkoxide Solution

Efficiency improvement of dye-sensitized solar cells based on electrodeposited TiO2 films by low temperature post-treatment

Fabrication of a nanoparticle TiO2 photoelectrochemical cell utilizing a solid polymeric electrolyte of PAN–PC–LiClO4

Contact Info

Product

Resources

About

One-step electrodeposition of TiO2/dye hybrid films

Cited by 20 publications

References 10 publications

Influence of Calcination Temperature on the Photoelectrochemical and Photocatalytic Properties of Porous TiO2 Films Electrodeposited from Ti(IV)-Alkoxide Solution

Influence of Calcination Temperature on the Photoelectrochemical and Photocatalytic Properties of Porous TiO2 Films Electrodeposited from Ti(IV)-Alkoxide Solution

Efficiency improvement of dye-sensitized solar cells based on electrodeposited TiO2 films by low temperature post-treatment

Fabrication of a nanoparticle TiO2 photoelectrochemical cell utilizing a solid polymeric electrolyte of PAN–PC–LiClO4

Contact Info

Product

Resources

About

Influence of Calcination Temperature on the Photoelectrochemical and Photocatalytic Properties of Porous TiO₂ Films Electrodeposited from Ti(IV)-Alkoxide Solution

Influence of Calcination Temperature on the Photoelectrochemical and Photocatalytic Properties of Porous TiO₂ Films Electrodeposited from Ti(IV)-Alkoxide Solution