Structural, Magnetic Properties and Dye-Sensitized Solar Cells Application of Pure and La Doped BiFeO<sub>3</sub>Powders Prepared by Sol-Gel

Raksa, Phathaitep; Pinitsoontorn, Supree; Maensiri, Santi

doi:10.1080/00150193.2015.1073087

Cited by 11 publications

(2 citation statements)

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“…Therefore, various methods are being used to improve the ferroelectric and photovoltaic properties of BFO thin films. It is reported that many factors such as doping [17], annealing atmosphere [18], poling [19], electrodes [20] and substrate [21] all affect the photovoltaic performance of BFO thin films. Although the sol–gel method for the preparation of BFO films at high annealing temperatures has been reported [22,23], there is no systematic study on low-cost low-temperature synthesis.…”

Section: Introductionmentioning

confidence: 99%

The Microstructure, Electric, Optical and Photovoltaic Properties of BiFeO3 Thin Films Prepared by Low Temperature Sol–Gel Method

et al. 2019

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Ferroelectrics have recently attracted attention as a candidate class of materials for use in photovoltaic devices due to their abnormal photovoltaic effect. However, the current reported efficiency is still low. Hence, it is urgent to develop narrow-band gap ferroelectric materials with strong ferroelectricity by low-temperature synthesis. In this paper, the perovskite bismuth ferrite BiFeO3 (BFO) thin films were fabricated on SnO2: F (FTO) substrates by the sol–gel method and they were rapidly annealed at 450, 500 and 550 °C, respectively. The microstructure and the chemical state’s evolution with annealing temperature were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS), and the relationship between the microstructure and electric, optical and photovoltaic properties were studied. The XRD, SEM and Raman results show that a pure phase BFO film with good crystallinity is obtained at a low annealing temperature of 450 °C. As the annealing temperature increases, the film becomes more uniform and has an improved crystallinity. The XPS results show that the Fe3+/Fe2+ ratio increases and the ratio of oxygen vacancies/lattice oxygen decreases with increasing annealing temperature, which results in the leakage current gradually being reduced. The band gap is reduced from 2.68 to 2.51 eV due to better crystallinity. An enhanced photovoltaic effect is observed in a 550 °C annealed BFO film with a short circuit current of 4.58 mA/cm2 and an open circuit voltage of 0.15 V, respectively.

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Section: Introductionmentioning

confidence: 99%

The Microstructure, Electric, Optical and Photovoltaic Properties of BiFeO3 Thin Films Prepared by Low Temperature Sol–Gel Method

et al. 2019

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“…The phase pure rhombohedral BiFeO 3 nanowire-based DSSC showed a high PCE of 3.02% [196]. Doping rare-earth element La and deposition of Au on BiFeO 3 nanoparticle surface have been reported to improve its DSSC performance [197,198] significantly. Besides these, BiFeO 3 sensitization on the ZnO and TiO 2 nanoparticle surface has been reported to improve the charge transfer, thereby enhancing the DSSC PCE [88,89,199].…”

Section: Bifeomentioning

confidence: 99%

Nanostructured perovskite oxides for dye-sensitized solar cells

Sheikh

Roy

Dutta

et al. 2021

J. Phys. D: Appl. Phys.

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Since its discovery, the dye-sensitized solar cell (DSSC) technology with its low-cost, simple fabrication procedure and promising photovoltaic (PV) performance remains a fertile research topic. Most DSSC research is focused on the TiO2, ZnO and other binary metal oxides based photoelectrodes and costly platinum (Pt) based counter electrodes (CEs). However, the overall PV performance of these traditional DSSCs is still inadequate compared to other standard PV technologies. The nanostructured perovskite oxides (POs) with their easily tunable interesting photophysical properties, higher stability, relatively simple synthesis procedure and high PV performance emerge as the promising alternatives for the binary metal oxide-based photoelectrodes and costly Pt-based CEs. Though there has been significant improvement in inorganic PO photoanode and CE based DSSCs in the last decade, a combined report on it is still missing. This review reports the underlying mechanisms, latest advances, and prospects of the PO photoanodes and CEs, with a particular focus on PO-based transparent conductive electrodes. We have summarized the shortcomings of the conventional DSSCs and highlighted the potentials of POs to overcome those limiting factors, which will guide the rational design of a highly efficient, cost-effective, and stable DSSC.

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Investigations of magnetic and ferroelectric properties of multiferroic Sr-doped bismuth ferrite

et al. 2018

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Structural, Magnetic Properties and Dye-Sensitized Solar Cells Application of Pure and La Doped BiFeO₃Powders Prepared by Sol-Gel

Cited by 11 publications

References 30 publications

The Microstructure, Electric, Optical and Photovoltaic Properties of BiFeO3 Thin Films Prepared by Low Temperature Sol–Gel Method

The Microstructure, Electric, Optical and Photovoltaic Properties of BiFeO3 Thin Films Prepared by Low Temperature Sol–Gel Method

Nanostructured perovskite oxides for dye-sensitized solar cells

Investigations of magnetic and ferroelectric properties of multiferroic Sr-doped bismuth ferrite

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Structural, Magnetic Properties and Dye-Sensitized Solar Cells Application of Pure and La Doped BiFeO3Powders Prepared by Sol-Gel

Cited by 11 publications

References 30 publications

The Microstructure, Electric, Optical and Photovoltaic Properties of BiFeO3 Thin Films Prepared by Low Temperature Sol–Gel Method

The Microstructure, Electric, Optical and Photovoltaic Properties of BiFeO3 Thin Films Prepared by Low Temperature Sol–Gel Method

Nanostructured perovskite oxides for dye-sensitized solar cells

Investigations of magnetic and ferroelectric properties of multiferroic Sr-doped bismuth ferrite

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Structural, Magnetic Properties and Dye-Sensitized Solar Cells Application of Pure and La Doped BiFeO₃Powders Prepared by Sol-Gel