100 mm × 100 mm large-sized dye sensitized solar cells

Okada, Kenichi; Matsui, Hiroshi; Kawashima, T.; Ezure, Tetsuya; Tanabe, Nari

doi:10.1016/j.jphotochem.2004.01.028

Cited by 128 publications

(83 citation statements)

References 12 publications

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“…Metals such as Ag, [3] Au, [3] Al, [3,4] Cu, [4,5] Zn, [6] Fe [6] and carbon steel [6] are not stable in the corrosive electrolyte of DSSCs, whereas Ti is stable. There are some disagreements about the stability of Ni and stainless steel, because, in some papers, it is indicated that they are stable in the electrolyte of DSSC, [4,7] whereas it has also been demonstrated by electrochemical impedance spectroscopy (EIS) that stainless steel is slowly corroded.…”

Section: à2mentioning

confidence: 99%

Utilizing Chromium as the Photoanode Substrate in Dye‐Sensitized Solar Cells

Behrouznejad

Taghavinia

2014

ChemElectroChem

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Fluorine‐doped tin oxide (FTO) is replaced with chromium as the photoanode substrate in a dye‐sensitized solar cell (DSSC), and the effect of chromium(III) oxide on the electron lifetime and the performance of a Cr‐based DSSC is investigated and compared with conventional FTO‐based devices. It is shown that Cr is stable in the chemically aggressive iodide‐based electrolyte, which can be attributed to the compact oxide overlayer. The chromium‐oxide layer also effectively blocks electron recombination from the substrate, while hindering electron transfer from the TiO2 film to the Cr electrode. We show that pretreatment of the electrodeposited Cr film with a colloidal sol of TiO2 is extremely effective in reducing the electron‐transfer resistance at the Cr–TiO2 interface. This effect may be attributed to both increasing interconnections between the mesoporous layer of TiO2 and the rough electrodeposited layer of Cr, as well as inhibition of the thickening Cr2O3 layer during the thermal process. The colloidal sol treatment increases the cell efficiency by 73 % of the initial value (from 2.58 to 4.47 %) and the fill factor from 0.38 to 0.64.

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Section: à2mentioning

confidence: 99%

Utilizing Chromium as the Photoanode Substrate in Dye‐Sensitized Solar Cells

Behrouznejad

Taghavinia

2014

ChemElectroChem

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“…Since this is a somewhat perturbing conclusion and since there have been persistent claims that the Ru-dye does not photodegrade and supports 10 8 turnovers, let us first discuss our results in relation to other recent studies on dye solar cell performance and stability [20][21][22][23][24][25][26][27][28][29]. They, for example, claim significant progress by using alternative electrolytes and improved sealing techniques (e.g., [20]).…”

Section: Discussionmentioning

confidence: 64%

“…Since long-term stability of dye sensitized cells is a crucial issue for economic feasibility, long-term studies of dye sensitized cells have been initiated in increasing numbers [20][21][22][23][24][25][26][27] to take advantage of the high energyconversion efficiency observed [28,29]. However, a major problem turned out to be the sensitivity of the cells towards electrolyte loss via evaporation and the instability of the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Determination of μmol-1 Level of Iron (III) in Natural Waters and Total Iron in Drugs by Flow Injection Spectrophotometry

Trimm¹,

Hunter²

2016

Dyes and Drugs

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Recommended by M. Sabry Abdel-MottalebDyes of characteristically different composition have been tested with respect to long-term stability in operating standardized dye sensitized cells during a time period of up to 3600 hours. Selective solar illumination, the use of graded filters, and imaging of photocurrents revealed that degradation is linked to the density of photocurrent passed. Photoelectrochemical degradation was observed with all sensitizers investigated. Sensitization was less efficient and sensitizers were less photostable with nanostructured ZnO compared to nanostructured TiO 2 . The best performance was confirmed for cis-Ru II (dcbpyH 2 ) 2 (NCS) 2 on TiO 2 . However, it was 7-10 times less stable under other identical conditions on ZnO. Stability is favored by carboxylate anchoring and metal-centred electron transfer. In presence of TiO 2 , it is enhanced by formation of a stabilizing charge-transfer complex between oxidized Ru dye and back-bonding interfacial Ti 3+ states. This is considered to be the main reason for the ongoing use of expensive Ru complexes in combination with TiO 2 . The local surface chemistry of the nanocrystalline TiO 2 turned out to be a crucial factor for sensitizer stability and requires further investigation.

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“…Although FTO glass is widely used as a counter electrode substrate, it has problems such as high cost, fragility and shape limitation [147][148][149][150]. In addition, the performance of DSC based on large-scale FTO glass is poor because of the high sheet resistance [151,152]. Compared with TCO coated polymer films, low cost thin metallic foils are preferred because of the high conductivity, reflectance and flexibility [153,154].…”

Section: Counter Electrode (Ce)mentioning

confidence: 99%

Key technological elements in dye-sensitized solar cells (DSC)

Rhee

Kwon

2011

Korean J. Chem. Eng.

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The best cell efficiency of lab scale dye sensitized solar cell (DSC) exceeds 11%, but there are still many technological problems to overcome for commercialization. This review describes key technological elements in DSC, including working electrodes with dye/TiO 2 /electrolyte interfaces, quasi solid state electrolyte with ion diffusion, and counter electrodes with electrolyte-catalytic electrode interfaces. Their operating principles, equivalent electric circuits and measurement techniques are described.

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100 mm × 100 mm large-sized dye sensitized solar cells

Cited by 128 publications

References 12 publications

Utilizing Chromium as the Photoanode Substrate in Dye‐Sensitized Solar Cells

Utilizing Chromium as the Photoanode Substrate in Dye‐Sensitized Solar Cells

Determination of μmol-1 Level of Iron (III) in Natural Waters and Total Iron in Drugs by Flow Injection Spectrophotometry

Key technological elements in dye-sensitized solar cells (DSC)

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