Investigation of the TiO2 nanoparticles aggregation with high light harvesting for high-efficiency dye-sensitized solar cells

Ge, Zhongwei; Wang, Chenglei; Chen, Zhiyan; Wang, Tong; Chen, Tao; Shi, Rui; Yu, Shengqing; Liu, Jianqiang

doi:10.1016/j.materresbull.2020.111148

Cited by 26 publications

(16 citation statements)

References 40 publications

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“…The maxima of peak shifts toward higher value of 2 θ angle with increasing doping concentration of Fe. The shifting of the peak may be due to tensile or compressive strain produced in TiO 2 due to doping 8,9 . The steady reduction of peak height with increased Fe doping may be attributed to incorporation of Fe ions into Ti host lattice sites 1,3,15 .…”

Section: Resultsmentioning

confidence: 99%

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Defect‐mediated optical properties of Fe‐substituted TiO₂ nanoparticles

Rathore

Kulshreshtha

Shukla

et al. 2022

Int J Applied Ceramic Tech

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Here, sol-gel derived Fe-TiO 2 anatase nanoparticles with varying concentrations of Ti (1-x) Fe x O 2 (x = 0%, 1%, 5%, 10%) were prepared. The structural, morphological, and optical properties of prepared samples were studied. X-ray diffraction (XRD) patterns show the formation of pure anatase phase. The mean crystallite size of Fe-TiO 2 decreases with increase in the concentration of Fe. Fourier transform infrared spectroscopy (FTIR) spectra confirmed the presence of Ti-O vibrational band for all the samples. In Raman spectrum, peak broadening and red shifting linked with Eg ∼144 cm -1 divulge the Fe substitution at Ti sites into host lattice structure. Photoluminescence (PL) spectra verified nine peaks related to near band-edge emission and various defect states. The UV-vis diffuse reflectance spectra represent redshift and reduction in the bandgap energy. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) investigations show that the size of the grains decreases with increase in Fe doping concentration. The study shows that Fe-doped TiO 2 anatase phase nanoparticles are suitable for photocatalytic activity and solar cell applications.

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Section: Resultsmentioning

confidence: 99%

“…In this paper, we report fabrication of TiO 2 nanoparticles in anatase form by an economical method. Anatase phase is more preferred for solar cell and photocatalyst applications 8–10 …”

Section: Introductionmentioning

confidence: 99%

Defect‐mediated optical properties of Fe‐substituted TiO₂ nanoparticles

Rathore

Kulshreshtha

Shukla

et al. 2022

Int J Applied Ceramic Tech

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“…the Nyquist plot of a fabricated device which exhibit three semicircles corresponding to the diffusion of I3 -/Ielectrolyte in lower frequency region, charge transport at Pt/electrolyte interface in higher frequency region and the electron transport kinetics at dye/TiO2/electrolyte interface in middle-frequency region [47]. 2.…”

Section: Photovoltaic Performance Of the Fabricated Dye-sensitized Solar Cellmentioning

confidence: 99%

Synthesis of anatase TiO2 microspheres and their efficient performance in dye-sensitized solar cell

Gowthambabu¹,

Deshpande

Govindaraj³

et al. 2021

J Mater Sci: Mater Electron

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Nanomaterials play important role in performance of dye sensitized solar cells. In this paper, highly phase pure anatase TiO2 microspheres were synthesized using a low-cost hydrothermal route. Initially, X-ray diffraction studies and Raman spectroscopic analysis were carried out and the formation of tetragonal structure of TiO2 with the anatase phase was confirmed. The UV-Vis DRS studies showed the excellent reflectance and optical bandgap energy of 3.29 eV.The well-interconnected spherical nanoparticles with different sizes were examined by Field Emission Scanning Electron Microscopic analysis. The fabricated dye-sensitized solar cell (DSSC) composed of prepared TiO2 microspheres as photoanode exhibited a higher power conversion efficiency (PCE) (η) of 5.4% as compared to commercial P25 with PCE of 3.6%. The higher Jsc (12.03 mA/cm 2 ) in the fabricated DSSC due to efficient dye loading capacity and high light-scattering property was also observed.

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“…In DSSC, the electrochemical impedance spectroscopic analysis was used to understand the detailed charge transport and recombination kinetics of electrochemical properties. Fig 9 shows the Nyquist plot of a fabricated device which exhibit three semicircles corresponding to the diffusion of I3 -/Ielectrolyte in lower frequency region, charge transport at Pt/electrolyte interface in higher frequency region and the electron transport kinetics at dye/TiO2/electrolyte interface in middle-frequency region [47]. Table 2.…”

Section: Photovoltaic Performance Of the Fabricated Dye-sensitized Somentioning

confidence: 99%

Synthesis of Anatase TiO2 Microspheres and Their Efficient Performance in Dye-sensitized Solar Cell

Gowthambabu

Deshpande

Govindaraj

et al. 2021

Preprint

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Nanomaterials play important role in performance of dye sensitized solar cells. In this paper, highly phase pure anatase TiO2 microspheres were synthesized using a low-cost hydrothermal route. Initially, X-ray diffraction studies and Raman spectroscopic analysis were carried out and the formation of tetragonal structure of TiO2 with the anatase phase was confirmed. The UV-Vis DRS studies showed the excellent reflectance and optical bandgap energy of 3.29 eV. The well-interconnected spherical nanoparticles with different sizes were examined by Field Emission Scanning Electron Microscopic analysis. The fabricated dye-sensitized solar cell (DSSC) composed of prepared TiO2 microspheres as photoanode exhibited a higher power conversion efficiency (PCE) (η) of 5.4% as compared to commercial P25 with PCE of 3.6%. The higher Jsc (12.03 mA/cm2) in the fabricated DSSC due to efficient dye loading capacity and high light-scattering property was also observed.

show abstract

Investigation of the TiO2 nanoparticles aggregation with high light harvesting for high-efficiency dye-sensitized solar cells

Cited by 26 publications

References 40 publications

Defect‐mediated optical properties of Fe‐substituted TiO₂ nanoparticles

Defect‐mediated optical properties of Fe‐substituted TiO₂ nanoparticles

Synthesis of anatase TiO2 microspheres and their efficient performance in dye-sensitized solar cell

Synthesis of Anatase TiO2 Microspheres and Their Efficient Performance in Dye-sensitized Solar Cell

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Investigation of the TiO2 nanoparticles aggregation with high light harvesting for high-efficiency dye-sensitized solar cells

Cited by 26 publications

References 40 publications

Defect‐mediated optical properties of Fe‐substituted TiO2 nanoparticles

Defect‐mediated optical properties of Fe‐substituted TiO2 nanoparticles

Synthesis of anatase TiO2 microspheres and their efficient performance in dye-sensitized solar cell

Synthesis of Anatase TiO2 Microspheres and Their Efficient Performance in Dye-sensitized Solar Cell

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Product

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Defect‐mediated optical properties of Fe‐substituted TiO₂ nanoparticles

Defect‐mediated optical properties of Fe‐substituted TiO₂ nanoparticles