Performance improvement of dye-sensitized solar cells by surface patterning of fluorine-doped tin oxide transparent electrodes

Kong, Seon Mi; Xiao, Yubin; Kim, Kyung Ha; Lee, Wan In; Chung, Chee Won

doi:10.1016/j.tsf.2011.01.251

Cited by 28 publications

(22 citation statements)

References 17 publications

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“…In particular, improving the surface roughness with degrading the electrical properties increases the surface areas of the laser-patterned FTO thin films, enhancing their ability to be loaded with TiO 2 particles and dyes. In addition, increasing the surface roughness increases J sc and the PCE [14,18]. The PCE values of samples C-E 15.02 mA/cm 2 in sample C to 16.28 mA/cm 2 in sample E with the similar values of ff.…”

Section: Resultsmentioning

confidence: 70%

“…With regard to the above-mentioned problems, one strategy being used to reduce the loss of photoelectrons at the interface between the dye-bonded TiO 2 layer on the FTO thin films and the electrolyte is to modify the surfaces of the FTO thin films [10,11]. Generally, the methods used for modifying the surfaces of FTO thin films are surface treatments using TiCl 4 solutions and direct surface etching techniques, such as reactive ion etching (RIE), inductively coupled plasma (ICP) etching, and laser patterning [12][13][14][15]. For example, Zou et al studied the effects of TiCl 4 treatments on the photovoltaic parameters, including short-circuit current density and fill factor, of DSSCs.…”

Section: Introductionmentioning

confidence: 99%

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Improved Photovoltaic Properties Of Dye-Sensitized Solar Cells Using Laser Patterned F-Doped SnO2 Thin Films

An¹,

An²,

Riu³

et al. 2015

Archives of Metallurgy and Materials

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We modified the surfaces of F-doped SnO 2 thin films using laser patterning to improve the photovoltaic properties of dye-sensitized solar cells. To do so, we varied the laser power density and the distance between laser-patterned lines. First, we investigated three power densities. Higher densities led to higher sheet resistances owing to increases in surface roughnesses. The lowest power density increased surface roughness without electrical degradation. Next, we explored three line spacings at a fixed power density. The films with the narrowest spacing exhibited the highest power conversion efficiency (∼7.00%), the highest short-circuit photocurrent density (16.28 mA/cm 2 ), and a good fill factor (58.82%).

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Section: Resultsmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Improved Photovoltaic Properties Of Dye-Sensitized Solar Cells Using Laser Patterned F-Doped SnO2 Thin Films

An¹,

An²,

Riu³

et al. 2015

Archives of Metallurgy and Materials

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“…The preparation and optimization for multi-stacking of nanopatterned layers could be extended to other applications, such as the photo-catalytic layer 25 and transparent conducting oxide substrates. 26,27 …”

Section: Mnps In Solar Cellsmentioning

confidence: 99%

Multi-layering of a nanopatterned TiO2 layer for highly efficient solid-state solar cells

Kim

Park

et al. 2015

NPG Asia Mater

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A facile process to prepare multi-layered nanopatterned photoanodes (MNPs) is presented with well-arrayed mesoporous inorganic oxide layers. The MNPs were prepared with multiple stacking of nanopatterned TiO 2 layers using a sacrificial polystyrene (PS)-thin film layer, which not only guided the stacking TiO 2 layer but also was removed completely by calcination without generating cracks. The prepared MNPs exhibited large enhancement of the light harvesting property by increasing the number of nanopatterned TiO 2 layers, through multiple reflection of the incident light from the periodic embedded channels formed between the nanopatterned layers. The photovoltaic efficiency was optimized with a 3-layered nanopatterned photoanode exhibiting a 73% J sc and a 65% power conversion efficiency enhancement compared with a cell with a flat TiO 2 layer for I 2 -free solid-state dye-sensitized solar cells.

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“…Nowadays employing light trapping structures is an essential process for the limited film thickness of thin-film photovoltaic devices such as DSSCs [48][49][50]. These structures reduce reflection problems and increase the optical path length of the incident light inside the cell structure.…”

Section: Structural Characterization Of Sputtered Tio 2 and Spin Coatmentioning

confidence: 99%

A new method for improving the performance of dye sensitized solar cell using macro-porous silicon as photoanode

2015

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This paper presents a novel method to improve the function of dye-sensitized solar cell (DSSC). The proposed method includes use of macro-porous silicon (PSi) as a photoanode for DSSC. The photoanode, PSi, was fabricated by a simple electrochemical anodization process. The effects of the obtained PSi-based photoanode on the DSSC performance are investigated by using photocurrent-voltage, UV-visible spectroscopy, and reflectance spectroscopy measurements. The results show that the macroporous structure in the PSi-based photoanode not only increases internal surface area in the photoanode, but also functions as an anti-reflective/light-trapping layer. Macroporous structure leads to the both enhancement of photoanode dye loading capacity and increasing the optical path length of the incident light inside the photoanode. This way, macro-porous structure plays an important role in the improvement of light harvesting efficiency. The optimal power conversion efficiency of 3.56 and 3.93 % (spin coated and sputtered TiO 2 respectively) is obtained from the PSi-based DSSC, with 58 and 75 % improvement in the efficiency as compared to a fabricated conventional DSSC. The measurement results suggest that exploiting PSi in the structure of photoanode raises hopes for low-cost and highperformance production of hybrid Si/dye solar cells in the future.

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Performance improvement of dye-sensitized solar cells by surface patterning of fluorine-doped tin oxide transparent electrodes

Cited by 28 publications

References 17 publications

Improved Photovoltaic Properties Of Dye-Sensitized Solar Cells Using Laser Patterned F-Doped SnO2 Thin Films

Improved Photovoltaic Properties Of Dye-Sensitized Solar Cells Using Laser Patterned F-Doped SnO2 Thin Films

Multi-layering of a nanopatterned TiO2 layer for highly efficient solid-state solar cells

A new method for improving the performance of dye sensitized solar cell using macro-porous silicon as photoanode

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