Extremely enhanced photovoltaic properties of dye-sensitized solar cells by sintering mesoporous TiO2 photoanodes with crystalline titania chelated by acetic acid

Liu, Bo‐Tau; Chou, Yu-Chuan; Liu, Jinyan

doi:10.1016/j.jpowsour.2016.02.009

Cited by 19 publications

(10 citation statements)

References 42 publications

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“…The solution A was stirred for 4h at 40 °C. In the second step, 0,6 mL acetic acid which was used as a chelating agent [22] and 6,43 mL of titanium (IV) tetraisopropoxide were mixed and then 29,36 mL of isopropanol (99,5% Aldrich) was added to the solution while stirring. Predetermined amount of solution A (65 mol% Fe2O3) then was added to a mixture B dropwise while stirring and then 0,4 mL of glycerol (98%, Fluka) as a drying process controlling chemical additive [23] was added obtaining sol solution.…”

Section: Methodsmentioning

confidence: 99%

Hydrophobic properties of high Fe³⁺ ion containing Fe₂O₃-TiO₂ coatings

Zukuls

Mežinskis

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The treatment of environmental pollution using semiconductor photo catalysis converts contaminants to innocuous products, such as CO2 and H2O. The most promising semiconductor photo catalysts are titania based materials. However, the main drawback of titania anatase polymorph is the large band gap which limits the spectrum of photons that can create electron−hole pairs to participate in oxidation or reduction. In this study Fe2O3-TiO2 coatings were successfully prepared on soda-lime silicate glass slide substrates using sol-gel method. Coating surface and morphology has been studied using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM). Coatings were obtained using dip-coating method. The present research is devoted to the studies of aging time and heat treatment effects on films hydrophobicity. The purpose of this contribution was the development of iron oxide rich Fe2O3-TiO2 hydrophobic thin films depending on different preparation parameters. SEM and AFM investigation revealed the formation of two layered, porous coating microstructure consisting of rough flattened areas which formed the backbone for irregularly shaped particles.

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Section: Methodsmentioning

confidence: 99%

Hydrophobic properties of high Fe³⁺ ion containing Fe₂O₃-TiO₂ coatings

Zukuls

Mežinskis

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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“…In our recent reports [41,42], highly reactive anatase TiO 2 chelated by acetic acid (called as TAc) and the TAc treated by the solvothermal method (called as h-TAc) were incorporated into mesoporous TiO 2 photoanodes in dye-sensitized solar cells (DSSCs), resulted in improved PCE. It was proven that the TAc/h-TAc increases the dye adsorption and decreases the charge transfer resistance, thereby improving the efficiency of DSSCs.…”

Section: Introductionmentioning

confidence: 99%

MAPbI3 Incorporated with Carboxyl Group Chelated Titania for Planar Perovskite Solar Cells in Low-Temperature Process

Balamurugan

Liu

et al. 2019

Nanomaterials

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Low-temperature, solution-processed, highly efficient hybrid organic/inorganic perovskite planar heterojunction solar cells were fabricated by incorporating reactive crystalline titania (h-TAc) into MAPbI3 layers. The h-TAc was prepared by the sol-gel reaction at low temperature followed by solvothermal treatment. The photoelectrical properties of the solar cells with h-TAc were analyzed. The incorporation with 0.85-wt% h-TAc showed the highest power conversion efficiency (PCE, 15.9%), increasing 69% compared to the pristine cell. The enhancement arose from large-grained microstructures, leading to a low rate of charge recombination. The carboxyl groups chelated on the surface of h-TAc revealed a strong attraction to lead ions, which are significantly helpful to MAPbI3 crystal growth.

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“…5 For dyesensitized solar cells (DSSCs), mesoporous TiO 2 structure offers high surface area resulting in an efficient loading capacity of the dye molecules. 6 In addition, its fast electron transport ability and prominent light scattering effect makes it the most promising candidate for DSSC applications. 7 However, the mesoporous structure results in direct contact between electrolyte and transparent conductive oxide (TCO) layer, enhancing electron/hole recombination.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Mesoporous TiO 2 (mp-TiO 2 ) has been considered as a benchmark material in a wide range of applications including hydrogen generation, photocatalysis, and thin film photovoltaics, in conjunction with dye-sensitized, quantum dots, and more recently perovskites solar cells. − This is due to a combination of physical properties that are inherent to the TiO 2 and its particular structuring, in addition to its chemical/optical stability and commercial availability . For dye-sensitized solar cells (DSSCs), mesoporous TiO 2 structure offers high surface area resulting in an efficient loading capacity of the dye molecules . In addition, its fast electron transport ability and prominent light scattering effect makes it the most promising candidate for DSSC applications .…”

Section: Introductionmentioning

confidence: 99%

One-Step Fiber Laser Fabrication of Mesoporous and Compact TiO₂ Layers for Enhanced Performance of Dye-Sensitized Solar Cells

Hadi

Chen

Curioni

et al. 2018

ACS Sustainable Chem. Eng.

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Mesoporous TiO 2 structure (mp-TiO 2) with a compact TiO 2 blocking layer (bl-TiO 2) has been recognized as an effective photoanode for high performance dye sensitized solar cells (DSSCs). However, producing both mesoporous and compact TiO 2 layers by conventional methods requires high temperature furnace process via a two-step manufacturing route. Here, a one-step laser technique has been successfully developed to generate both mesoporous and compact TiO 2 layers on tin doped indium oxide (ITO) coated glass by a millisecond pulsed fiber laser with a wavelength of 1070 nm in ambient atmosphere. Compared with conventional furnace processes, the laser process exhibits a significant reduction of overall fabrication time from 5 h 20 min to 2 min. More importantly, the DSSCs fabricated by the laser process shows a remarkable improvement with the maximum power conversion efficiency (PCE) by 34% compared with the DSSCs fabricated by the furnace. The short-circuit current density (J sc) reaches 16.5 mA cm-2 for the DSSCs fabricated by the laser process while 10.6 mA cm-2 is obtained for that fabricated by the furnace process. The improvement is associated with the increased dye adsorption, decreased charge transfer resistance and increased electron lifetime of the TiO 2 photoanode fabricated by the laser process.

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Extremely enhanced photovoltaic properties of dye-sensitized solar cells by sintering mesoporous TiO2 photoanodes with crystalline titania chelated by acetic acid

Cited by 19 publications

References 42 publications

Hydrophobic properties of high Fe³⁺ ion containing Fe₂O₃-TiO₂ coatings

Hydrophobic properties of high Fe³⁺ ion containing Fe₂O₃-TiO₂ coatings

MAPbI3 Incorporated with Carboxyl Group Chelated Titania for Planar Perovskite Solar Cells in Low-Temperature Process

One-Step Fiber Laser Fabrication of Mesoporous and Compact TiO₂ Layers for Enhanced Performance of Dye-Sensitized Solar Cells

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Extremely enhanced photovoltaic properties of dye-sensitized solar cells by sintering mesoporous TiO2 photoanodes with crystalline titania chelated by acetic acid

Cited by 19 publications

References 42 publications

Hydrophobic properties of high Fe3+ ion containing Fe2O3-TiO2 coatings

Hydrophobic properties of high Fe3+ ion containing Fe2O3-TiO2 coatings

MAPbI3 Incorporated with Carboxyl Group Chelated Titania for Planar Perovskite Solar Cells in Low-Temperature Process

One-Step Fiber Laser Fabrication of Mesoporous and Compact TiO2 Layers for Enhanced Performance of Dye-Sensitized Solar Cells

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Hydrophobic properties of high Fe³⁺ ion containing Fe₂O₃-TiO₂ coatings

Hydrophobic properties of high Fe³⁺ ion containing Fe₂O₃-TiO₂ coatings

One-Step Fiber Laser Fabrication of Mesoporous and Compact TiO₂ Layers for Enhanced Performance of Dye-Sensitized Solar Cells