Thickness-dependent solar power conversion efficiencies of catalytic graphene oxide films in dye-sensitized solar cells

Huh, Seung Hun; Choi, Seongho; Ju, Hae-Mi

doi:10.1016/j.cap.2011.03.038

Cited by 11 publications

(2 citation statements)

References 7 publications

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“…Carbonaceous materials with rough surface provide considerable reduction sites or the surface area for CE to react with electrolytes, thereby resulting in the electrode's high catalytic activity [29]. Film thickness is also an important factor in determining the CE properties because it affects both the conductivity and catalytic activity of the electrode [30,31]. Profilometry measurement was conducted to identify the surface roughness and thickness of HC CE.…”

Section: Resultsmentioning

confidence: 99%

An Efficient Metal-Free Hydrophilic Carbon as a Counter Electrode for Dye-Sensitized Solar Cells

Kouhnavard

Ludin²,

Ghaffari

et al. 2016

International Journal of Photoenergy

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This study presents a new cost-effective metal-free counter electrode (CE) for dye-sensitized solar cells (DSSCs). CE was prepared by doctor blading a hydrophilic carbon (HC) particle on a fluorine-doped tin oxide substrate. Thereafter, HC CE was characterized using X-ray diffraction, profilometry, four-point probe testing, and cyclic voltammetry. A 2 µm thick HC CE revealed a comparable catalytic activity to that of the Pt electrode under the same experimental conditions. DSSC based on HC CE was analyzed and showedJscof 6.87 mA/cm2close to that of DSSC with Pt CE (7.0 mA/cm2). More importantly, DSSC based on HC CE yielded a power conversion efficiency (η) of 2.93% under AM 1.5 irradiation (100 mW/cm2), which was comparable to that of DSSC based on standard Pt CE. These findings suggest that HC CE could be a promising CE for low-cost DSSCs.

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Section: Resultsmentioning

confidence: 99%

An Efficient Metal-Free Hydrophilic Carbon as a Counter Electrode for Dye-Sensitized Solar Cells

Kouhnavard

Ludin²,

Ghaffari

et al. 2016

International Journal of Photoenergy

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“…However,t he optimum amounto fo xygen-containing functional groups in RGO is unclear.I nt his regard, it has been found that effective reduction in thin contributes to ah igher conversion efficiency of 2.30 %r elative to that of partially reduced. [75] Thiso ccurs because of too many oxygen-containing groups decrease the electrical conductivity of graphene. Therefore, ab alance between electrical conductivity ande lectrocatalytic activity of graphene should be made to achievet he optimum conditions for functionalization of DSSCs.…”

Section: Graphene-based Counter Electrodesmentioning

confidence: 99%

Carbonaceous Materials and Their Advances as a Counter Electrode in Dye‐Sensitized Solar Cells: Challenges and Prospects

et al. 2015

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Dye-sensitized solar cells (DSSCs) serve as low-costing alternatives to silicon solar cells because of their low material and fabrication costs. Usually, they utilize Pt as the counter electrode (CE) to catalyze the iodine redox couple and to complete the electric circuit. Given that Pt is a rare and expensive metal, various carbon materials have been intensively investigated because of their low costs, high surface areas, excellent electrochemical stabilities, reasonable electrochemical activities, and high corrosion resistances. In this feature article, we provide an overview of recent studies on the electrochemical properties and photovoltaic performances of carbon-based CEs (e.g., activated carbon, nanosized carbon, carbon black, graphene, graphite, carbon nanotubes, and composite carbon). We focus on scientific challenges associated with each material and highlight recent advances achieved in overcoming these obstacles. Finally, we discuss possible future directions for this field of research aimed at obtaining highly efficient DSSCs.

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Graphene for Energy Solutions and its Printable Applications

Grande

Chundi

Wei

2015

Carbon Nanomaterials for Advanced Energy Systems

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Thickness-dependent solar power conversion efficiencies of catalytic graphene oxide films in dye-sensitized solar cells

Cited by 11 publications

References 7 publications

An Efficient Metal-Free Hydrophilic Carbon as a Counter Electrode for Dye-Sensitized Solar Cells

An Efficient Metal-Free Hydrophilic Carbon as a Counter Electrode for Dye-Sensitized Solar Cells

Carbonaceous Materials and Their Advances as a Counter Electrode in Dye‐Sensitized Solar Cells: Challenges and Prospects

Graphene for Energy Solutions and its Printable Applications

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