Cocktail effect of Fe2O3 and TiO2 semiconductors for a high performance dye-sensitized solar cell

Im, Ji Sun; Lee, Sung Kyu; Lee, Young-Seak

doi:10.1016/j.apsusc.2010.09.066

Cited by 49 publications

(14 citation statements)

References 33 publications

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“…24 Each layer deposition is followed by annealing, involving a specific heating ramp. The scattering effect may also be achieved by other approaches such as adding an overlayer containing nanotubes, [25][26][27] hollow TiO 2 spheres, 28 specially designed beads, 29 or TiO 2 composite materials (TiO 2 -Al 2 O 3 , TiO 2 -Nb 2 O 5 , and TiO 2 -ZrO 2 ). 30 However, multilayer deposition or specially synthesized scattering structures add complexity in the manufacturing process rendering it prohibitively expensive.…”

Section: Introductionmentioning

confidence: 99%

Thin single screen-printed bifunctional titania layer photoanodes for high performing DSSCs via a novel hybrid paste formulation and process

2012

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A novel hybrid titania paste comprising aqueous-synthesized anatase (A) nanocrystalites and submicrometer-sized "sea urchin"-like rutile (R) particles that enables the construction of thin (5-6 lm) single-layer photoanodes with competitive power conversion efficiency is described. Owing to the high surface area of the dye (N719)-coated anatase film, the scattering properties of the unique rutile particulates, and the incorporation of P25 particles, the constructed bifunctional electrode films exhibit excellent electron transport properties (long electron lifetime) and no electrolyte diffusion resistance. Dye-sensitized solar cell devices built with the thin (5-6 lm) hybrid electrodes showed greatly improved power conversion efficiency (PCE), namely 7.04%, when compared to devices based on single anatase (4.20%), double-layer (A 1 R), or double thickness commercial benchmark paste (6.74%). This is an impressive result as less than 1/2 material was used in a single printed layer. Thinner films as the ones built here may prove particularly advantageous in using new noniodide electrolytes associated with slow diffusion rates.

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Section: Introductionmentioning

confidence: 99%

Thin single screen-printed bifunctional titania layer photoanodes for high performing DSSCs via a novel hybrid paste formulation and process

2012

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“…Therefore, optimizing the microstructure of the photoanode is vital for developing high solar efficiency of DSSCs. Recently, the lightscattering effects of TiO 2 electrode have been proposed by using different particles in the TiO 2 layers, which can significantly improve the light harvest efficiency [9]. Ferber and Luther [10] and Rothenberger et al [11] confirmed the lightscattering effect with the transport theory and the manyflux model, respectively.…”

Section: Introductionmentioning

confidence: 99%

Particle Size Effects of TiO₂Layers on the Solar Efficiency of Dye-Sensitized Solar Cells

Jeng

Wung

Chang

et al. 2013

International Journal of Photoenergy

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Large particle sizes having a strong light scattering lead to a significantly decreased surface area and small particle sizes having large surface area lack light-scattering effect. How to combine large and small particle sizes together is an interesting work for achieving higher solar efficiency. In this work, we investigate the solar performance influence of the dye-sensitized solar cells (DSSCs) by the multiple titanium oxide (TiO2) layers with different particle sizes. It was found that the optimal TiO2thickness depends on the particle sizes of TiO2layers for achieving the maximum efficiency. The solar efficiency of DSSCs prepared by triple TiO2layers with different particle sizes is higher than that by double TiO2layers for the same TiO2thickness. The choice of particle size in the bottom layer is more important than that in the top layer for achieving higher solar efficiency. The choice of the particle sizes in the middle layer depends on the particle sizes in the bottom and top layers. The mixing of the particle sizes in the middle layer is a good choice for achieving higher solar efficiency.

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“…Furthermore, Yang et al (2012) reported that the photoelectric conversion efficiency of N3-sensitized N-doped and F-doped TiO 2 electrodes was about 17.1% higher than that of a pure TiO 2 electrode. Also, bisemiconductors of TiO 2 and Fe 2 O 3 were used as photoelectrodes of DSSC devices (Im et al, 2011). The use of these bisemiconductors caused an increase in the efficiency and was attributed to a cocktail effect of the two conduction bands.…”

Section: Doping Of Tio 2 With Multielements (B C N and F)mentioning

confidence: 99%

Effect of Doping a Rare-Earth Oxide on the Photovoltaic Parameters of Dye -Sensitized Solar Cells.

El-Hamalawy

Elkholy

Ali

2016

Journal of Bioscience and Applied Research

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Yb 2 O 3-doped TiO 2 were prepared using mechanochemical process to obtain Dye Sensitized Solar Cells (DSSCs) photoanodes. The parameters of DSSC devices were calculated. The study showed that the addition of Yb 2 O 3 improved the open-circuit voltage via a p-type effect, whereas, a negative effect on the generated photocurrent was observed. This reduction in photocurrent was attributed to increasing crystal defects as a result of increasing the concentration of Yb 2 O 3 dopants.

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Cocktail effect of Fe2O3 and TiO2 semiconductors for a high performance dye-sensitized solar cell

Cited by 49 publications

References 33 publications

Thin single screen-printed bifunctional titania layer photoanodes for high performing DSSCs via a novel hybrid paste formulation and process

Thin single screen-printed bifunctional titania layer photoanodes for high performing DSSCs via a novel hybrid paste formulation and process

Particle Size Effects of TiO₂Layers on the Solar Efficiency of Dye-Sensitized Solar Cells

Effect of Doping a Rare-Earth Oxide on the Photovoltaic Parameters of Dye -Sensitized Solar Cells.

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Cocktail effect of Fe2O3 and TiO2 semiconductors for a high performance dye-sensitized solar cell

Cited by 49 publications

References 33 publications

Thin single screen-printed bifunctional titania layer photoanodes for high performing DSSCs via a novel hybrid paste formulation and process

Thin single screen-printed bifunctional titania layer photoanodes for high performing DSSCs via a novel hybrid paste formulation and process

Particle Size Effects of TiO2Layers on the Solar Efficiency of Dye-Sensitized Solar Cells

Effect of Doping a Rare-Earth Oxide on the Photovoltaic Parameters of Dye -Sensitized Solar Cells.

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Particle Size Effects of TiO₂Layers on the Solar Efficiency of Dye-Sensitized Solar Cells