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Improved electron transportation of dye-sensitized solar cells using uniform mixed CNTs–TiO2 photoanode prepared by a new polymeric gel process

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Abstract

A new facile strategy for fabrication of high surface area electrode in the form of mixtures of coated carbon nanotubes (CNTs) and TiO2 nanoparticles with various weight ratios is reported. The so-called polymeric gel process was used to deposit thick film containing uniform distribution of TiO2 nanoparticles and coated CNTs with high porosity by dip coating for dye-sensitized solar cells (DSSCs) applications. Based on simultaneous differential thermal analysis, the minimum annealing temperature to obtain inorganic- and organic-free films was determined at 500 °C. X-ray diffraction analysis revealed that deposited films were composed of primary nanoparticles with crystallite size in the range 21–45 nm. Field emission scanning electron microscope images showed that deposited films had porous morphology containing uniform spherical particles with diameter around 2.5 μm and coated CNTs with TiO2 nanoparticles (TNTs). The spherical particles were composed of small nanoparticles (~60 nm), improving light scattering and dye loading of the DSSC. Moreover, TNTs were uniformly incorporated into the electrodes, improving electron transportation. X-ray photoelectron spectroscopy was presented as an obvious proof for the inclusion of CNTs into the TiO2 matrix. Ultraviolet–visible spectroscopy showed that CNT introduction enhanced the visible light absorption of photoanode by shifting the absorption onset to visible light region. An enhancement of power conversion efficiency (PCE) from 6.53 % for pure TiO2 to 7.38 % for CNT–TiO2 electrode containing 0.025 wt% CNTs was achieved. This well-incorporated study would present an intellectual development in the fabrication of low-cost CNT consolidated DSSCs with high PCE.

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References

  • Ago H, Kugler T, Cacialli F et al (1999) Work functions and surface functional groups of multiwall carbon nanotubes. J Phys Chem B 103:8116–8121

    Article  Google Scholar 

  • Bakhshayesh AM, Mohammadi MR (2012) Development of nanostructured porous TiO2 thick film with uniform spherical particles by a new polymeric gel process for dye-sensitized solar cell applications. Electrochim Acta 89:90–97

    Article  Google Scholar 

  • Bond AM, Miao W, Raston CL (2000) Mercury(II) immobilized on carbon nanotubes: synthesis, characterization, and redox properties. Langmuir 16:6004–6012

    Article  Google Scholar 

  • Chen LC, Ho YC, Guo WS et al (2009) Enhanced visible light-induced photoelectrocatalytic degradation of phenol by carbon nanotube-doped TiO2 electrodes. Electrochim Acta 54:3884–3891

    Article  Google Scholar 

  • Cullity BD, Stock SR (2001) Elements of X-ray diffraction. Prentice Hall, Lawrence

    Google Scholar 

  • Eder D, Windle AH (2008) Carbon–inorganic hybrid materials: the carbon-nanotube/TiO2 interface. Adv Mater 20:1787–1793

    Article  Google Scholar 

  • Feigenbrugel V, Loew C, Calvé SL, Mirabel P (2005) Near-UV molar absorptivities of acetone, alachlor, metolachlor, diazinon and dichlorvos in aqueous solution. J Photochem Photobiol A 174:76–81

    Article  Google Scholar 

  • Guimin A, Wanhong M, Zhenyu S et al (2007) Preparation of titania/carbon nanotube composites using supercritical ethanol and their photocatalytic activity for phenol degradation under visible light irradiation. Carbon 45:1795–1801

    Article  Google Scholar 

  • Hagfeldt A, Grätzel M (2000) Synthesis of TiO2 nanoparticles on plasma-treated carbon nanotubes and its application in photoanodes of dye-sensitized solar cells molecular photovoltaics. Acc Chem Res 33:269–277

    Article  Google Scholar 

  • Ito S, Liska P, Pechy P et al (2005) Control of dark current in photoelectrochemical (TiO2/I−–I3−) and dye-sensitized solar cells. Chem Commun 34:4351–5453

    Article  Google Scholar 

  • Ito S, Murakami N, Comte P et al (2008) Fabrication of thin film dye sensitized solar cells with solar to electric power conversion efficiency over 10. Thin Solid Films 516:4613–4619

    Article  Google Scholar 

  • Lin WJ, Hsu CT, Tsai UC (2011) Dye-sensitized solar cells based on multiwalled carbon nanotube-titania/titania bilayer structure photoelectrode. J Colloid Interface Sci 358:562–566

    Article  Google Scholar 

  • Morales ER, Mathews NR, Reyes-Coronado D et al (2012) Physical properties of the CNT:TiO2 thin films prepared by sol–gel dip coating. Sol Energy 86:1037–1044

    Article  Google Scholar 

  • O’Regan B, Grätzel M (1991) A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films. Nature 353:737–740

    Article  Google Scholar 

  • Sawatsuk T, Chindaduang A, Sae-kung C (2009) Dye-sensitized solar cells based on TiO2–MWCNTs composite electrodes: performance improvement and their mechanisms. Diam Relat Mater 18:524–527

    Article  Google Scholar 

  • Song Z, Hrbek J, Osgood R (2005) Formation of TiO2 nanoparticles by reactive-layer-assisted deposition and characterization by XPS and STM. Nano Lett 5(7):1327–1332

    Article  Google Scholar 

  • Spurr R, Myers H (1957) Quantitative analysis of anatase-rutile mixtures with an X-ray diffractometer. Anal Chem 29:760–762

    Article  Google Scholar 

  • Sun S, Gao L, Liu Y (2011) Optimization of the cutting process of multi-wall carbon nanotubes for enhanced dye-sensitized solar cells. Thin Solid Films 519:2273–2279

    Article  Google Scholar 

  • Tan B, Wu Y (2006) Dye-sensitized solar cells based on anatase TiO2 nanoparticle/nanowire composites. J Phys Chem B 110:15932–15938

    Article  Google Scholar 

  • Tsai TH, Chiou SC, Chen SM (2011) Enhancement of dye-sensitized solar cells by using Graphene–TiO2 composites as photoelectrochemical working electrode. Int J Electrochem Sci 63:3333–3343

    Google Scholar 

  • Wang W, Serp P, Kalck P, Faria JL (2005) Visible light photodegradation of phenol on MWNT–TiO2 composite catalysts prepared by a modified sol–gel method. J Mol Catal A 235:194–199

    Article  Google Scholar 

  • Xie Y, Heo SH, Yoo SH et al (2010) Synthesis and photocatalytic activity of anatase TiO2 nanoparticles-coated carbon nanotubes. Nanoscale Res Lett 5:603–607

    Article  Google Scholar 

  • Yella A, Lee HW, Tsao HN et al (2011) Prophyrin-sensitized solar cells with cobalt (II–III)-based redox electrolyte exceed 12 percent efficiency. Science 334:629–634

    Article  Google Scholar 

  • Zhang W, Cui XL, Jiang ZY (2008) Effect of composite modes on photoelectrochemical properties of MWCNTs/TiO2 nanocomposite films. Acta Phys Chim Sin 24:1975–1980

    Google Scholar 

  • Zhang S, Niu H, Cheng C, Lan Y et al (2011) Synthesis of TiO2 nanoparticles on plasma-treated carbon nanotubes and its application in photoanodes of dye-sensitized solar Cells. J Phys Chem C 115:22025–22034

    Article  Google Scholar 

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Acknowledgments

The authors wish to thank the financial support from Iran National Science Foundation (INSF).

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Sharif University of Technology, Azadi Street, Tehran, Iran

    A. M. Bakhshayesh, M. R. Mohammadi, N. Masihi & M. H. Akhlaghi

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  1. A. M. Bakhshayesh
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  2. M. R. Mohammadi
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  3. N. Masihi
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  4. M. H. Akhlaghi
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Correspondence to M. R. Mohammadi.

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Bakhshayesh, A.M., Mohammadi, M.R., Masihi, N. et al. Improved electron transportation of dye-sensitized solar cells using uniform mixed CNTs–TiO2 photoanode prepared by a new polymeric gel process. J Nanopart Res 15, 1961 (2013). https://doi.org/10.1007/s11051-013-1961-2

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  • DOI: https://doi.org/10.1007/s11051-013-1961-2

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