The effect of sputter-deposited TiO2 passivating layer on the performance of dye-sensitized solar cells based on sol–gel derived photoelectrode

Hossain, M. F.; Biswas, S.; Takahashi, T.

doi:10.1016/j.tsf.2008.06.027

Cited by 39 publications

(20 citation statements)

References 30 publications

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“…Finally the obtained film was annealed at 500qC. The DSC was fabricated by soaking the ZnO film with dye: cis-di (thiocyanate) bis (2,2c-bipyridyl-4, 4c-di-carboxylate) ruthenium (II), the electrolyte: 0.5 M KI, 0.05 M I 2 and 0.05 M 4-tert-butylpridine and carbon counter electrode [17]. The active cell area was 0.3 cm 2 .…”

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Novel micro-ring structured ZnO photoelectrode for dye-sensitized solar cell

2010

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The micro-ring like structured zinc oxide (ZnO) film was deposited on SnO 2 : F coated glass substrate by sol-gel dip-coating technique with 1.0 g polyethylene glycol (PEG) content. The surface morphology of micro-ring structured ZnO film has been confirmed by the scanning electron microscope. This ZnO film is used to fabricate the solar cell with the help of ruthenium based dye and carbon counter electrode. The photoelectric and incident photon-to-current conversion efficiency was 1.17% and 48.4%, respectively. The DSC results have been compared with ZnO films prepared without PEG contents. This work is continuation of our previous work [15], where the DSC with ZnO films was optimized with respect to zinc acetate concentrations and film thickness. In previous works, the upper surface of the optimized ZnO electrode has some crack/cannel and wall like structure, but maximum surface remains smooth. To overcome these limitations, the polyethylene glycol (PEG) was used [16] as surface modified. The present paper reports on the synthesis of micro-ring structured ZnO electrode by the same sol-gel method but with 1.0 g PEG content. The structural, optical, and surface morphological properties of the resulting ZnO photoelectrode and the photovoltaic performance of the DSC have been investigated and discussed. Moreover, performance of this DSC device has been compared with DSC without PEG based ZnO film.The micro-ring like ZnO film was prepared by the simple sol-gel dip-coating technique according to the reference [15]. The precursor solution was prepared by using zinc acetate [Zn(CH 3 COO) 2 .2H 2 O], absolute ethanol, diethanolamine [NH(CH 2 CH 2 OH) 2 : DEA], and deionized water. In addition, the 1.0 g of PEG content was added in the above solution. When the precursor solution became clear then the clean SnO 2 :F (FTO) coated glass substrate was dipping and withdrawing (2 mm/min). After every withdrawing, the coated film was dried at 60qC in air for 10 min. The above process was repeated, so as to obtain desired film thickness (~2.3 Pm). Finally the obtained film was annealed at 500qC. The DSC was fabricated by soaking the ZnO film with dye: cis-di (thiocyanate) bis (2,2c-bipyridyl-4, 4c-di-carboxylate) ruthenium (II), the

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confidence: 99%

Novel micro-ring structured ZnO photoelectrode for dye-sensitized solar cell

2010

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“…The majority of investigations deal, however, with TiO 2 blocking layers prepared by various methods. Spray pyrolysis is most commonly used, [4][5][6][7]11] but also sol-gel techniques, screen-printing [16], radio frequency magnetron sputtering of Ti followed by oxidation [17] and reactive sputtering of TiO 2 [18][19][20] have been applied.…”

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Electrochemical characterization of TiO2 blocking layers prepared by reactive DC magnetron sputtering

Waita

Aduda

Mwabora

et al. 2009

Journal of Electroanalytical Chemistry

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This is an author produced version of a paper published in Journal of Electroanalytical Chemistry. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination. AbstractThin TiO 2 (anatase) films were prepared by reactive DC magnetron sputtering and characterized in detail. Specifically, they were tested as compact blocking underlayers in dye-sensitized solar cells. Elastic recoil detection analysis and optical measurement showed some porosity in the sputtered films, but electrochemical measurements demonstrated good blocking characteristics. This suggests the presence of small voids rather than pinholes in the deposited films. In the case of an iodide/iodine redox couple, thin underlayers (~20 nm) improved the fill factor without affecting other properties of 1 the cell. In case of a ferrocene / ferrocenium-based electrolyte, the presence of underlayers was necessary to obtain functional dye-sensitized solar cells.

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“…4 [29]. The maximum IPCE of DSSCs was 31.2% for dumbbell-shaped hexagonal and 34.5% for aligned ZnO NRAs.…”

Section: Dye Sensitized Solar Cell Applications Of Zno Nanostructuresmentioning

confidence: 91%

Fabrication of well-aligned and dumbbell-shaped hexagonal ZnO nanorod arrays and their dye sensitized solar cell applications

Qurashi

Hossain

Faiz

et al. 2010

Journal of Alloys and Compounds

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The effect of sputter-deposited TiO2 passivating layer on the performance of dye-sensitized solar cells based on sol–gel derived photoelectrode

Cited by 39 publications

References 30 publications

Novel micro-ring structured ZnO photoelectrode for dye-sensitized solar cell

Novel micro-ring structured ZnO photoelectrode for dye-sensitized solar cell

Electrochemical characterization of TiO2 blocking layers prepared by reactive DC magnetron sputtering

Fabrication of well-aligned and dumbbell-shaped hexagonal ZnO nanorod arrays and their dye sensitized solar cell applications

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