Preparation and properties of a carbon nanotube-based nanocomposite photoanode for dye-sensitized solar cells

Yen, Ching Yu; Lin, Yuping; Liao, Shu-Hsien; Weng, Cheng-Chih; Huang, Ching-Chun; Hsiao, Yi-Hsiu; Chen‐Chi, M.; Chang, Man; Shao, Hsin; Tsai, Miaw Sheue; Hsieh, Cheng‐Chih; Tsai, Chien Hsiung; Weng, Fang-Bor

doi:10.1088/0957-4484/19/37/375305

Cited by 119 publications

(62 citation statements)

References 47 publications

(97 reference statements)

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“…MWCNTs. At higher MWCNT concentrations, according to literature [28] and to our findings on the morphology of the 1.00% wt. composite system (see the comparison between Fig.…”

Section: Resultssupporting

confidence: 80%

“…Nevertheless, a high loading of MWCNTs causes light-harvesting competition that affects the light absorption of the dye-sensitizer and consequently reduces the cell efficiency. Moreover, excess of MWCNTs can result in a less compact TiO 2 layer, in which large pores form at the micron scale [28] or in the formation of quite disconnected aggregates of MWCNTs covered in conformance by TiO 2 nanoparticles (see Fig. 1d, sample 1.00% wt.…”

Section: Resultsmentioning

confidence: 99%

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Effect of multi-walled carbon nanotubes on the stability of dye sensitized solar cells

Dembélé

Nechache

Nikolova

et al. 2013

Journal of Power Sources

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h i g h l i g h t s< We studied dye sensitized solar cells with and without addition of carbon nanotubes. < CNTs can improve both photoconversion efficiency and operational stability. t r a c tWe report the improvement of the operational stability of dye-sensitized solar cells (DSSCs) by incorporating multi-wall carbon nanotubes (MWCNTs) in conventional nanostructured semiconducting TiO 2 photoanodes. DSSCs were prepared by adding various concentrations of MWCNTs (up to 1.0% wt.) to TiO 2 anatase nanoparticles. Optimization of MWCNT concentration leads to photoconversion efficiency as high as 4.1% as opposed to 3.7% for pure TiO 2 photoanodes. The performance of the solar cells was measured for 10 consecutive days of continuous ambient light exposure. MWCNT addition results in the decrease of efficiency from 4.1% to 3.7%, while a decrease from 3.7% to 2.4% was recorded in pure TiO 2 photoanodes. These results are encouraging toward the commercial exploitation of DSSCs.

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“…MWCNTs. At higher MWCNT concentrations, according to literature [28] and to our findings on the morphology of the 1.00% wt. composite system (see the comparison between Fig.…”

Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Effect of multi-walled carbon nanotubes on the stability of dye sensitized solar cells

Dembélé

Nechache

Nikolova

et al. 2013

Journal of Power Sources

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“…The issue, competition between light harvesting by the sensitizers (e.g.,: dye molecules or quantum dots) and photons absorption by CNTs, has been widely proposed to explain these phenomena. [87] However, it is somehow intuitive. Intrinsically, carbon materials can absorb photons from a very wide spectrum.…”

Section: Charge Transfer Through Conducting Material-tio 2 Interfacementioning

confidence: 99%

Unraveling the Intrinsic Structures that Influence the Transport of Charges in TiO₂ Electrodes

Chen

Tao

Liu

2017

Advanced Energy Materials

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TiO2 is by far the most widely used semiconducting materials for electrodes in (photo)‐electrochemical applications owing to its unique electrical and optical properties combined with the chemical and thermal stability as well as nontoxicity. The electronic processes, especially the transport of charges within the electrodes and interfacial charge transfer, are among the most concerned issues to achieve better solar energy utilization. Towards this end, many approaches, including the development of novel electrode configurations and tuning electronic structures have been devoted to facilitate these electronic processes. Despite the intensive studies, some intrinsic structural features in TiO2 nanostructures, which are usually hidden from the tangible materials characterization techniques, are far from being consciously concerned. In this review, in addition to briefly summarizing the recent progress in TiO2 nanostructures for (photo)‐electrochemical applications, the intrinsic structural features in TiO2 nanostructures, together with the challenges and perspectives involving these features, are emphatically discussed. These intrinsic structural features are shown to have a profound influence on the transport of charges within the TiO2 electrodes and interfacial charge transfer, and thus it is proposed that the charge transport in TiO2 electrodes can be efficiently promoted by cognizing and making good use of the intrinsic structural features.

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“…The optimum content of the MWCNTs varies with the method of incorporation into TiO 2 . [10,[13][14][15]17,18] In our case, the optimum content of the MWCNTs is 0.06 %. The photocurrent is first enhanced and then weakens as the content of the MWCNTs increases.…”

Section: Photovoltaic Performance Of Dscsmentioning

confidence: 58%

“…However, the mixed crystal of the rutile and brookite phases appeared in the nanocomposites. [14,17] These studies have demonstrated that CNTs can improve conductivity, increase the surface area of electrodes, and enhance the energy conversion efficiency of photovoltaic devices. Therefore, the use of CNTs to enhance the photovoltaic performance of solar cells is a promising and worthwhile research endeavor.…”

Section: Introductionmentioning

confidence: 99%

Performance of Dye‐Sensitized Solar Cells Based on MWCNT/TiO_2–xN_x Nanocomposite Electrodes

Guo

Shen

et al. 2011

Eur J Inorg Chem

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Multiwall carbon nanotube (MWCNT) fibrils were introduced into TiO 2-x N x photoelectrodes to enhance charge collection efficiency as charge-transport pathways. For comparison, we also synthesized MWCNT/TiO 2 nanocomposites to fabricate dye-sensitized solar cells (DSCs). The effect of MWCNTs on the photovoltaic performance of the DSCs was studied in detail. The performance of DSCs based on MWCNT/TiO 2-x N x differs significantly from that of MWCNT/TiO 2 photoelectrodes. A high energy conversion efficiency of 7.66 % was achieved in the dye-sensitized MWCNT/TiO 2 nanocomposites solar cells. The results show that remarkable enhancement of ca. 33 % and ca. 40 % in

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Preparation and properties of a carbon nanotube-based nanocomposite photoanode for dye-sensitized solar cells

Cited by 119 publications

References 47 publications

Effect of multi-walled carbon nanotubes on the stability of dye sensitized solar cells

Effect of multi-walled carbon nanotubes on the stability of dye sensitized solar cells

Unraveling the Intrinsic Structures that Influence the Transport of Charges in TiO₂ Electrodes

Performance of Dye‐Sensitized Solar Cells Based on MWCNT/TiO_2–xN_x Nanocomposite Electrodes

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Preparation and properties of a carbon nanotube-based nanocomposite photoanode for dye-sensitized solar cells

Cited by 119 publications

References 47 publications

Effect of multi-walled carbon nanotubes on the stability of dye sensitized solar cells

Effect of multi-walled carbon nanotubes on the stability of dye sensitized solar cells

Unraveling the Intrinsic Structures that Influence the Transport of Charges in TiO2 Electrodes

Performance of Dye‐Sensitized Solar Cells Based on MWCNT/TiO2–xNx Nanocomposite Electrodes

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Product

Resources

About

Unraveling the Intrinsic Structures that Influence the Transport of Charges in TiO₂ Electrodes

Performance of Dye‐Sensitized Solar Cells Based on MWCNT/TiO_2–xN_x Nanocomposite Electrodes