Graphene Materials and Their Use in Dye-Sensitized Solar Cells

Roy-Mayhew, Joseph D.; Aksay, İlhan A.

doi:10.1021/cr400412a

Cited by 385 publications

(249 citation statements)

References 243 publications

Supporting

Mentioning

248

Contrasting

Order By: Relevance

“…Furthermore, due to their high conductivity and low cost, the HRG/TiO 2 nanocomposites have become attractive electrode materials for solar cells, electrochemical sensors and biosensors applications, where the TiO 2 NPs exhibit improved electrochemical properties through the support of graphene. [375][376][377] Recently, dye-sensitized solar cells (DSSC) were fabricated using HRG/TiO 2 photoanodes, where 0.5 wt% incorporated graphene demonstrated a power conversion efficiency of 4.28%, which is 59% higher than that without graphene. The incorporated graphene, apart from increasing the dye adsorption also enhanced the electron lifetime significantly.…”

Section: Solar Cellsmentioning

confidence: 99%

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

et al. 2015

View full text Add to dashboard Cite

show abstract

Section: Solar Cellsmentioning

confidence: 99%

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Considering the retardance of photoexcited electronhole recombination on TiO 2 nanoparticles surface because of the electron-accepting ability of POMs and fast electron transfer via the POMs mediator to ITO surface, and the contribution of rGO to the electron transfer speed to electron collector, we observed the highest photocurrent among all the test groups. 12,21,22 In comparison, it is found that the photocurrent of a non-LbL film consisting of PSS/rGO/TiO 2 /PW 12 prepared by "doctor blade" method is ca. 1.15¯A, lower than that of (PEI/PSS)(PAH/rGO/TiO 2 /PW 12 ) 5 film, indicative of the superiority of LbL method.…”

Section: ¹1mentioning

confidence: 99%

Synergistic Effect of Polyoxometalates and rGO for Enhancing the Photocurrents of TiO₂-based Composite Film

Ma¹,

Chai²,

Wen³

et al. 2016

Chem. Lett.

View full text Add to dashboard Cite

Polyoxometalates possess unique electron-accepting ability while maintaining their structures; this makes them effective electron mediators in semiconductor-based optoelectronic system via retarding the photoexcited electronhole recombination. H 3 PW 12 O 40 (PW 12 ) was introduced into TiO 2 film using layerby-layer method in the presence of reduced graphene oxide, serving as a conductive additive. The composite film had smooth surface and dense packing of TiO 2 nanoparticles, and showed enhanced transient photocurrent compared to the films without PW 12 or reduced graphene oxide (rGO). IV measurement further confirmed that the power conversion efficiency of PW 12 / rGO/TiO 2 film was remarkably improved compared to those of the films without PW 12 or rGO. PW 12 functions as an electron mediator and rGO serves as a conductive agent for enhancing the photocurrent and power conversion efficiency, due to the efficient dissociation of excitons and fast electron transfer. Practical application of solar cells is greatly dependent on the enhancement of photovoltaic response for the purpose of substantial power conversion efficiency. Basically, excitons are generated upon exposure to light in a photovoltaic device.1 Up to date, retarding the recombination of photoexcited electronhole pairs and accelerating the charge transport are reported to play significant roles for enhancing the performance of photovoltaic device. 2 rGO can be prepared by partially removing the oxygencontaining groups of graphene oxide, which possess unique electron conductivity, flexibility, and mechanical property. 3,4 Graphene-based hybrid nanomaterials have been widely applied in the photovoltaic devices, and showing positive effect on the enhancement of energy conversion efficiency. 5,6 Introduction of rGO into TiO 2 composite can effectively lead to superior performance of dye-sensitized solar cells via serving as photoanode. Polyoxometalates (POMs) have diverse structures and variable chemical composition, showing unique electron acceptor while maintaining intact structures. 811 Very recently, POMs have showed the ability to trap photogenerated electrons from the conduction band of semiconductors, and also promote electron transfer to electron collector acting as electron scavenger, leading to enhance the photovoltaic response of TiO 2 , ZnO, phthalocyanine-based composites, etc.12 The combination of POMs with semiconducting perovskites successfully creates a photoconductive system with enhanced photocurrent because of the effective electron-transfer pathway to separate the photoexcited excitons and retard the electronhole recombination.However, smart combination of POMs, rGO, and TiO 2 might show enhanced photocurrent and energy conversion efficiency via the retardance of electronhole recombination and promotion of charge transfer to electron collector.In this paper, layer-by-layer (LbL) method is applied to prepare the rGO/TiO 2 /PW 12 -based composite film on ITO substrate. 1317 Compared to pure TiO 2 -based film, the composite film sh...

show abstract

“…Starting from the 2008 seminal work of Shi's group [10], a large number of publications have been centered upon the development of graphene-based nanostructures as counter electrode materials. These works have been analyzed and discussed in some excellent reviews [11][12][13][14]. To keep the rapidly increasing advances in this topic updated, it is a perfect time to review the recent progresses and the challenges of the graphene-supported counter electrodes in dye-sensitized solar cell devices.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress on the Synthesis of Graphene-Based Nanostructures as Counter Electrodes in DSSCs Based on Iodine/Iodide Electrolytes

Tasis

2017

Catalysts

View full text Add to dashboard Cite

Graphene-based nanomaterials functionalized by different doping strategies have attracted great attention for energy conversion themes, due to their large specific surface area, high conductivity, and appreciable electrocatalytic properties. This mini-review presents an overview of the recent progress in the synthesis of graphene-based nanomaterials as counter electrodes for dye-sensitized solar cells based on iodine/iodide electrolytes, along with challenges and perspectives in this exciting field.

show abstract

Graphene Materials and Their Use in Dye-Sensitized Solar Cells

Cited by 385 publications

References 243 publications

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

Synergistic Effect of Polyoxometalates and rGO for Enhancing the Photocurrents of TiO₂-based Composite Film

Recent Progress on the Synthesis of Graphene-Based Nanostructures as Counter Electrodes in DSSCs Based on Iodine/Iodide Electrolytes

Contact Info

Product

Resources

About

Graphene Materials and Their Use in Dye-Sensitized Solar Cells

Cited by 385 publications

References 243 publications

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

Synergistic Effect of Polyoxometalates and rGO for Enhancing the Photocurrents of TiO2-based Composite Film

Recent Progress on the Synthesis of Graphene-Based Nanostructures as Counter Electrodes in DSSCs Based on Iodine/Iodide Electrolytes

Contact Info

Product

Resources

About

Synergistic Effect of Polyoxometalates and rGO for Enhancing the Photocurrents of TiO₂-based Composite Film