Properties of several types of novel counter electrodes for dye-sensitized solar cells

Ma, Tingli; Fang, Xiaoming; Akiyama, Morito; Inoue, Kôzô; Noma, Hiroaki; Abe, Eiichi

doi:10.1016/j.jelechem.2004.08.002

Cited by 201 publications

(200 citation statements)

References 36 publications

Supporting

Mentioning

190

Contrasting

Unclassified

Order By: Relevance

“…1 Flexible stainless steel (StS) substrates are clearly cheaper compared to TCO glass 2,3 and also suitable for roll-to-roll mass production. StS has been used both as counter electrode (CE) [4][5][6][7][8] and photoelectrode (PE) substrate. 7,[9][10][11][12][13] To gain flexible DSC, transparent polymer substrates are used with metal substrates.…”

Section: Introductionmentioning

confidence: 99%

Segmented Cell Design for Improved Factoring of Aging Effects in Dye Solar Cells

Miettunen¹,

Halme²,

Lund³

2009

J. Phys. Chem. C

View full text Add to dashboard Cite

A new segmented cell design was applied to study the aging of dye solar cell with stainless steel (StS) photoelectrode substrate, in particular the role of electrolyte in the degradation. Photovoltaic showed changes in the recombination at the photoelectrode / electrolyte interface. With the segmented cell method, we confirmed that the electrolyte was not contaminated by the StS nor was it subject to other significant changes related to the rapid degradation.

show abstract

Section: Introductionmentioning

confidence: 99%

Segmented Cell Design for Improved Factoring of Aging Effects in Dye Solar Cells

Miettunen¹,

Halme²,

Lund³

2009

J. Phys. Chem. C

View full text Add to dashboard Cite

show abstract

“…Platinum is, however, quite expensive and when used with a FTO coated glass substrate, the counter electrode can account for up to 60% of the total cell cost [43].…”

Section: B21 Cell Substrate and Counter-electrode Catalystmentioning

confidence: 99%

Inkjet Printing of Titanium Dioxide Photoanodes for Dye Sensitized Solar Cells

Johnson

Jiao

2014

MRS Proc.

View full text Add to dashboard Cite

Dye Sensitized Solar Cells (DSSC) offer advantages over semiconductor solar cells including lower costs and relaxed material purity requirements. However, DSSC solar energy conversion efficiencies are lower than many competing photovoltaic technologies. Key to DSSC performance is the incorporation of nanocrystalline metal oxides to provide a large surface area for photosensitive dye loading. Titanium dioxide (TiO 2 ) is the predominately used metal oxide.The structure of the TiO 2 layer determines charge transfer efficiency and the level of generated photocurrent. Common practice for high performance cells is to deposit a thin, compact TiO 2 coating followed by a thicker, more porous TiO 2 layer. Often, different deposition methods are used for each layer.Inkjet printing of TiO 2 potentially offers a high degree of control over the deposition of TiO 2 suspensions. Previous use of inkjet printing for TiO 2 depositions have focused on producing TiO 2 films with uniform density. A multi-ink printing system offers the possibility of forming TiO 2 films with variable density using a single deposition method.For this research, inkjet printing of TiO 2 films with a graded density profile was explored as a means of improving DSSC performance. Cell performance was assessed through the measurement of generated currents and device Fill Factors.Two means to produce density variations in TiO 2 layers were explored: TiO 2 particle size and layer pore-volume. For the former, the reduction of micron-sized TiO 2 particles using a milling approach was attempted but proved unsuccessful. To affect changes in pore-volume, several TiO 2 suspensions were developed with varying pore-forming content that successfully produced variations in layer density. DSSCs with printed TiO 2 films having three density layers showed an average improvement in the Fill Factor of 8% versus single layers and 6% versus 5 double layers. Short-circuit currents in tri-layer films increased an average of 35% over single layers and 13% over double layers.The results effectively demonstrated the potential for using inkjet printing as a sole deposition method to produce TiO 2 films with a non-uniform density leading to improved DSSC performance. One possibility for further study would be to create further layer variations through the simultaneous printing of different suspensions.

show abstract

“…In 19 previous studies with StS based electrodes in iodine electrolyte, the low temperature treatments have resulted in a higher catalytic activity compared to thermal platinization in contrast to the case of glass based electrodes. 4,8 This feature is assumed to be a result of higher contact resistance between the metal and the catalyst layer caused by the growth of an oxide layer between them in the heat treatment. Unrelated to the actual electrocatalytic activity of the catalyst particles themselves, this would affect both cobalt and iodide based cells, as found in the experiments.…”

Section: Sem Analysis Of the Aged Cellsmentioning

confidence: 99%

“…Many of them have been suggested for dye solar cells earlier to be used with iodine based electrolyte. [3][4][5][6][7][8] Earlier studies have also…”

Section: Introductionmentioning

confidence: 99%

Do Counter Electrodes on Metal Substrates Work with Cobalt Complex Based Electrolyte in Dye Sensitized Solar Cells?

Miettunen

Saukkonen

et al. 2012

J. Electrochem. Soc.

View full text Add to dashboard Cite

Yes. Testing 7 different metals as a substrate for a counter electrode in dye sensitized solar cells (DSSC) showed that some metals can be a good option for use with cobalt electrolyte. It was found that Stainless steels 304 and 321 as well as Ni and Ti suit well to the counter electrodes in DSSCs with cobalt electrolyte. In these 4 cases both the efficiency and the lifetime were similar to the reference cells on conducting glass substrates. In contrast, the cells with Al, Cu and Zn substrates suffered from both a low efficiency and a poor stability. These three metals had clear marks of corrosion such as apparent corrosion products in the aged cells. Additionally, we also investigated how the different types of catalyst materials perform in the case of a metal counter electrode (stainless steel 304) with cobalt electrolyte in comparison to reference glass cells. Among the 5 different catalyst layers the best results for stainless steel electrode were achieved with low temperature platinization whereas polymer catalysts poly(3,4-ethylenedioxythiophene)-p-toluenesulfone and poly(3,4-ethylenedioxythiophene)-polystyrenesulfone that worked well on the glass worked very poorly on the metal.

show abstract

Properties of several types of novel counter electrodes for dye-sensitized solar cells

Cited by 201 publications

References 36 publications

Segmented Cell Design for Improved Factoring of Aging Effects in Dye Solar Cells

Segmented Cell Design for Improved Factoring of Aging Effects in Dye Solar Cells

Inkjet Printing of Titanium Dioxide Photoanodes for Dye Sensitized Solar Cells

Do Counter Electrodes on Metal Substrates Work with Cobalt Complex Based Electrolyte in Dye Sensitized Solar Cells?

Contact Info

Product

Resources

About