Enhancing the electron transfer process of TiO2-based DSSC using DC magnetron sputtered ZnO as an efficient alternative for blocking layer

Kouhestanian, E.; Mozaffari, M.; Ranjbar, Maryam; Amoli, Hossein Salar

doi:10.1016/j.orgel.2020.105915

Cited by 24 publications

(5 citation statements)

References 66 publications

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“…For larger grain sizes, there is an increase in the crystallinity of the structures [31]. Other techniques like spray pyrolysis, co-precipitation, DC magnetron sputtering, sol-gel, spin coating, and thermal synthesis obtained sizes of 34.7, 32, 23.66, 42-47, and 14 nm [1,18,[33][34][35]. The large crystallite sizes in this work can be explained by the high concentration of titanium dioxide, above 10%, and the heat treatment at 450 °C [17].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of TiO2/ZnO photoanodes on FTO conductive glass for photovoltaic applications

et al. 2023

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For oxide semiconductors for application in dye-sensitized solar cells (DSSCs), titanium dioxide conjugated with zinc oxide thin films was synthesized and characterized. The UV (ultraviolet) spectrum characterization showed a peak of absorbance at around 355 nm, with a band gap of 3.25 eV and reflectance around 85%. Such characteristics allowed the fabrication of DSSCs with N719 dye, under simulated light of 100 mW/cm 2 . The highest efficiency of 1.17% was at 5% titanium dioxide and 4 h of dye immersion.

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Section: Resultsmentioning

confidence: 99%

Synthesis of TiO2/ZnO photoanodes on FTO conductive glass for photovoltaic applications

et al. 2023

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“…In the existing literature [42][43][44] , one can find publications indicating that the use of a ZnO blocking layer or mixture of ZnO and TiO 2 results in an improvement in device efficiency, however, it is very important each time to do the selection of appropriate conditions for the preparation of blocking layers. This indicates that in this case it is possible to modify the methodology of preparation for the blocking layers, resulting in an increase in the efficiency of the devices.…”

Section: Discussionmentioning

confidence: 99%

Impact of blocking layers based on TiO2 and ZnO prepared via direct current reactive magnetron sputtering on DSSC solar cells

Sibiński,

Sawicka-Chudy,

Wisz

et al. 2024

Sci Rep

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The optimization of dye-sensitized solar cells (DSSCs) technology towards suppressing charge recombination between the contact and the electron transport layer is a key factor in achieving high conversion efficiency and the successful commercialization of this type of product. An important aspect of the DSSC structure is the front blocking layer (BL): optimizing this component may increase the efficiency of photoelectron transfer from the dye to the semiconductor by reduction charge recombination at the TiO2/electrolyte and FTO/electrolyte interfaces. In this paper, a series of blocking layer variants, based on TiO2 and ZnO:TiO2, were obtained using the reactive magnetron sputtering method. Material composition, structure and layer thickness were referred to each process parameters. Complete DSSCs with structure FTO/BL/m-TiO2@N719/ EL-HSE/Pt/FTO were obtained on such bases. In the final results, verification of opto-electrical parameters of these cells were tested and used for the conclusions on the optimal blocking layer composition. As the conclusion, application of blocking layer consists of neat TiO2 resulted in improvement of device efficiency. It should be noted that for TiO2:ZnO/CuxO and TiO2/CuxO cells, higher efficiencies were also achieved when pure TiO2 was used as window layer. Additionally it was proven that the admixture of ZnO phase inspires Voc and FF growth, but is overall unfavorable compared to pristine TiO2 blocking layer and the reference cell, according to the final cell efficiency.

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“…The other reason for this increase is the presence of dye (N719), which contains within its composition the heavy element ruthenium, which contains the triple levels, as strong coupling occurs between (spin-orbit), which accelerates the process of crossing between systems [18] N719 dye converts incident solar light into a wavelength equivalent to its absorption spectrum, which causes an increase in cell efficiency [19]. As well as the grinding process that took place between zinc oxide and (MnCoFeO 4 ) provided a large area due to the small particle size to absorb the molecules more and thus increase the number of electrons transferred to the photoanode [20]. As for the reason for the decrease in efficiency when doping at (4,5)% is the increase in the content of the magnetic substance added to the zinc oxide, which led to a decrease in the electrical properties [21] result of the difference between the density of the zinc oxide particles and (MnCoFeO 4 ),The -fig ( 8)‖ shows curves (I-V) under a light of intensity of 100 -mw/cm 2‖ ,it is area 1cm 2 , The current density, the open circuit voltage and the filling factor were measured.…”

Section: E Photovoltaic Measurements (I-v)mentioning

confidence: 99%

Role of magnetic nanoparticles incorporation for the enhanced efficiency of ZnO based Dye-Sensitized Solar Cells (DSSCs)

Abdallah,

Abdullah,

Jabbar

2023

UTJsci

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In this study, we reported on the effect of the internal magnetic field arising from magnetic particles added to zinc oxide in certain proportions, which led to an improvement in the performance of the dye solar cell, We found that the magnetic effect It is the main factor that improves the ability to transfer electrons generated from the separation process between (electron-hole) pairs, And reduce the process of reunification between electrons and holes, The efficiency of the cell with a pure electrode was (1.38%), while the highest efficiency we got after doping was when doping with a ratio (97%ZnO+3%MnCoFeO4) reached (1.7%), i.e. the percentage increase in efficiency (23%).

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Enhancing the electron transfer process of TiO2-based DSSC using DC magnetron sputtered ZnO as an efficient alternative for blocking layer

Cited by 24 publications

References 66 publications

Synthesis of TiO2/ZnO photoanodes on FTO conductive glass for photovoltaic applications

Synthesis of TiO2/ZnO photoanodes on FTO conductive glass for photovoltaic applications

Impact of blocking layers based on TiO2 and ZnO prepared via direct current reactive magnetron sputtering on DSSC solar cells

Role of magnetic nanoparticles incorporation for the enhanced efficiency of ZnO based Dye-Sensitized Solar Cells (DSSCs)

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