Optimization of dye loading time for SnO2 based Rose Bengal dye-sensitized solar cell

Arote, Sandeep A.; Tabhane, V. A.; Jadkar, Sandesh; Pathan, Habib M.

doi:10.1007/s12648-014-0505-7

Cited by 7 publications

(8 citation statements)

References 28 publications

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“…71-0652). The films are showing excellent crystallinity compared to that of the films prepared by using sophisticated techniques reported in the literature (4,5) . The crystal quality of tin oxide films can be improved by eliminating the lattice disorders by gradual annealing.…”

Section: Structural and Morphological Characterizationmentioning

confidence: 78%

“…Dye adsorption beyond https://www.indjst.org/ the optimal limit leads to the aggregation of dye on the films and hence adversely affects the DSC's performance due to the increase in resistance and the recombination loss of ejected electrons. The amount of dye loading on the films depends on the immersion time of the films in the dye solution and it plays a vital role in the DSC's efficiency (4) . Hence, three sets of as-grown and annealed SnO 2 films were kept immersed in the solution for the limited duration of 12, 18, and 24 hours.…”

Section: Preparation Of the Dye Solution And Sensitizationmentioning

confidence: 99%

“…The uniform porosity may yield to the dye distribution within the film and hence an increase in the electron availability in DSCs (2) . These films with cauliflower morphology and nanostructure grains become promising candidates in DSC applications (1,4) .…”

Section: Structural and Morphological Characterizationmentioning

confidence: 99%

“…Dye-sensitized solar cells (DSC) are an inexpensive alternative to conventional pn junction solar cells (1)(2)(3)(4) . Compared with the first and second-generation solar cells based on conventional semiconductor materials, the DSC exhibits relatively low efficiencies (3) .…”

Section: Introductionmentioning

confidence: 99%

“…Assembling an efficient DSC depends upon the suitable combination of metal oxide and dye (3) . Good optical transparency and electrical conductivity of the tin oxide (SnO 2 ) films make it a potential candidate for transparent electrodes in DSC (4,5) . SnO 2 films are chemically more stable than other transparent conducting oxide films like zinc oxide and Sn-doped In 2 O 3 films (5) .…”

Section: Introductionmentioning

confidence: 99%

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Photo-characterization of Organic Dye-Sensitized Tin Oxide Films

Murali¹,

Arts²,

Remadevi³

2021

IJST

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Objectives: To develop organic dye sensitized film electrodes from highly porous tin oxide (SnO 2 ) thin films prepared at room temperature using the SILAR technique. Methods/Analysis: SnO 2 films were fabricated by the successive ionic layer adsorption and reaction (SILAR) technique at room temperature and its sensitization was done using the organic dye Rose Bengal (RB). The effect of sensitization on the as-grown and annealed film electrodes was investigated. Findings: Crystalline films with cauliflower-like morphology exhibit a large inherent adsorptive surface area and exhibit steady transmittance of 60-80% in the visible region. As-grown SnO 2 films possess higher porosity and lower refractive index than that of the annealed films. SnO 2 films have a resistivity in the range of 10 -2 -10 -3 Ωcm. The dye adsorbed SnO 2 film electrodes have much higher absorbance and cover a broad visible region compared to the bare SnO 2 film electrodes. RB sensitization leads to an accelerated improvement in absorbed photon energy through the visible region of the spectrum extending from 2 to 3.75 eV. Novelty: Contrary to the sophisticated methods of preparation in the reported literature, highly porous crystalline SnO 2 thin films were prepared at room temperature, using glacial acetic acid and hydrogen peroxide by a cost-effective simple wet chemical method. Work demonstrates that SnO 2 films sensitized with RB act as an excellent dye-sensitized electrode, which can absorb almost half the visible spectrum (400-600 nm) of solar radiations. We believe that this is the unique report of surface modification of wet chemically prepared SnO 2 electrodes by the photo-sensitizer RB.

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Section: Structural and Morphological Characterizationmentioning

confidence: 78%

Section: Preparation Of the Dye Solution And Sensitizationmentioning

confidence: 99%