The performance of photovoltaic devices could be improved by using rationally designed nanocomposites with high electron mobility to efficiently collect photo-generated electrons. Single-walled carbon nanotubes exhibit very high electron mobility, but the incorporation of such nanotubes into nanocomposites to create efficient photovoltaic devices is challenging. Here, we report the synthesis of single-walled carbon nanotube–TiO2 nanocrystal core–shell nanocomposites using a genetically engineered M13 virus as a template. By using the nanocomposites as photoanodes in dye-sensitized solar cells, we demonstrate that even small fractions of nanotubes improve the power conversion efficiency by increasing the electron collection efficiency. We also show that both the electronic type and degree of bundling of the nanotubes in the nanotube/TiO2 complex are critical factors in determining device performance. With our approach, we achieve a power conversion efficiency in the dye-sensitized solar cells of 10.6%.
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Sambur, J. B., Novet, T. & Parkinson, B. A. Multiple exciton collection in a sensitized photovoltaic system. Science 330, 63–66 (2010).
O'Regan, B. & Grätzel, M. A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films. Nature 353, 737–740 (1991).
Kamat, P. V. Quantum dot solar cells. semiconductor nanocrystals as light harvesters. J. Phys. Chem. C 112, 18737–18753 (2008).
Kongkanand, A. et al. Quantum dot solar cells. tuning photoresponse through size and shape control of CdSe–TiO2 architecture. J. Am. Chem. Soc. 130, 4007–4015 (2008).
Mora-Seró, I. et al. Recombination in quantum dot sensitized solar sells. Acc. Chem. Res. 42, 1848–1857 (2009).
Nazeeruddin, M. K. et al. Conversion of light to electricity by cis-X2bis(2,2′-bipyridyl-4,4′-dicarboxylate)ruthenium(II) charge-transfer sensitizers (X=Cl−, Br−, I−, CN−, and SCN−) on nanocrystalline titanium dioxide electrodes. J. Am. Chem. Soc. 115, 6382–6390 (1993).
Chen, C-Y. et al. Highly efficient light-harvesting ruthenium sensitizer for thin-film dye-sensitized solar cells. ACS Nano 3, 3103–3109 (2009).
Cherepy, N. J., Smestad, G. P., Grätzel, M. & Zhang, J. Z. Ultrafast electron injection: implications for a photoelectrochemical cell utilizing an anthocyanin dye-sensitized TiO2 nanocrystalline electrode. J. Phys. Chem. B 101, 9342–9351 (1997).
Nazeeruddin, M. K. et al. Combined experimental and DFT–TDDFT computational study of photoelectrochemical cell ruthenium sensitizers. J. Am. Chem. Soc. 127, 16835–16847 (2005).
Robel, I., Kuno, M. & Kamat, P. V. Size-dependent electron injection from excited CdSe quantum dots into TiO2 nanoparticles. J. Am. Chem. Soc. 129, 4136–4137 (2007).
Sagawa, T., Yoshikawa, S. & Imahori, H. One-dimensional nanostructured semiconducting materials for organic photovoltaics. J. Phys. Chem. Lett. 1, 1020–1025 (2010).
Varghese, O. K., Paulose, M. & Grimes, C. A. Long vertically aligned titania nanotubes on transparent conducting oxide for highly efficient solar cells. Nature Nanotech. 4, 592–597 (2009).
Law, M. et al. Nanowire dye-sensitized solar cells. Nature Mater. 4, 455–459 (2005).
Kongkanand, A., Martínez Domínguez, R. & Kamat, P. V. Single wall carbon nanotube scaffolds for photoelectrochemical solar cells. capture and transport of photogenerated electrons. Nano Lett. 7, 676–680 (2007).
Brown, P., Takechi, K. & Kamat, P. V. Single-walled carbon nanotube scaffolds for dye-sensitized solar cells. J. Phys. Chem. C 112, 4776–4782 (2008).
Saito, R., Dresselhaus, G. & Dresselhaus, M. S. Physical Properties of Carbon Nanotubes (Imperial College Press, 1998).
Bonaccorso, F. Debundling and selective enrichment of SWNTs for applications in dye-sensitized solar cells. Int. J. Photoenergy 2010, 727134 (2010).
O'Connell, M. J. et al. Band gap fluorescence from individual single-walled carbon nanotubes. Science 297, 593–596 (2002).
Jang, S-R., Vittal, R. & Kim, K-J. Incorporation of functionalized single-wall carbon nanotubes in dye-sensitized TiO2 solar cells. Langmuir 20, 9807–9810 (2004).
Geng, J. et al. Effect of SWNT defects on the electron transfer properties in P3HT/SWNT hybrid materials. Adv. Funct. Mater. 18, 2659–2665 (2008).
Whaley, S. R. et al. Selection of peptides with semiconductor binding specificity for directed nanocrystal assembly. Nature 405, 665–668 (2000).
Lee, S-W., Mao, C., Flynn, C. E. & Belcher, A. M. Ordering of quantum dots using genetically engineered viruses. Science 296, 892–895 (2002).
Sarikaya, M. et al. Molecular biomimetics: nanotechnology through biology. Nature Mater. 2, 577–585 (2003).
Lee, S-K., Yun, D. S. & Belcher, A. M. Cobalt ion mediated self-assembly of genetically engineered bacteriophage for biomimetic Co–Pt hybrid material. Biomacromolecules 7, 14–17 (2005).
Wang, S. et al. Peptides with selective affinity for carbon nanotubes. Nature Mater. 2, 196–200 (2003).
Barone, P. W., Baik, S., Heller, D. A. & Strano, M. S. Near-infrared optical sensors based on single-walled carbon nanotubes. Nature Mater. 4, 86–92 (2005).
Hiemenz, P. C. & Rajagopalan, R. Principles of Colloid and Surface Chemistry (Marcel Dekker, 1997).
Chen, X. & Mao, S. S. Titanium dioxide nanomaterials: synthesis, properties, modifications, and applications. Chem. Rev. 107, 2891–2959 (2007).
Dresselhaus, M. S., Dresselhaus, G., Saito, R. & Jorio, A. Raman spectroscopy of carbon nanotubes. Phys. Rep. 409, 47–99 (2005).
Eder, D. & Windle, A. H. Carbon–inorganic hybrid materials: the carbon-nanotube/TiO2 interface. Adv. Mater. 20, 1787–1793 (2008).
Halme, J., Vahermaa, P., Miettunen, K. & Lund, P. Device physics of dye solar cells. Adv. Mater. 22, E210–E234 (2010).
Lee, K-M., Hu, C-W., Chen, H-W. & Ho, K-C. Incorporating carbon nanotube in a low-temperature fabrication process for dye-sensitized TiO2 solar cells. Sol. Energy Mater. Sol. Cells 92, 1628–1633 (2008).
Tang, Y-B. et al. Incorporation of graphenes in nanostructured TiO2 films via molecular grafting for dye-sensitized solar cell application. ACS Nano 4, 3482–3488 (2010).
Yang, N. et al. Two-dimensional graphene bridges enhanced photoinduced charge transport in dye-sensitized solar cells. ACS Nano 4, 887–894 (2010).
Ng, Y. H. et al. To what extent do graphene scaffolds improve the photovoltaic and photocatalytic response of TiO2 nanostructured films? J. Phys. Chem. Lett. 1, 2222–2227 (2010).
Tan, P. H. et al. Photoluminescence spectroscopy of carbon nanotube bundles: evidence for exciton energy transfer. Phys. Rev. Lett. 99, 137402 (2007).
Han, J-H. et al. Exciton antennas and concentrators from core–shell and corrugated carbon nanotube filaments of homogeneous composition. Nature Mater. 9, 833–839 (2010).
Hone, J., Whitney, M., Piskoti, C. & Zettl, A. Thermal conductivity of single-walled carbon nanotubes. Phys. Rev. B 59, R2514 (1999).
Lee, Y. J. et al. Fabricating genetically engineered high-power lithium-ion batteries using multiple virus genes. Science 324, 1051–1055 (2009).
Hamann, T. W. et al. Advancing beyond current generation dye-sensitized solar cells. Energy Environ. Sci. 1, 66–78 (2008).
Mora-Seró, I. & Bisquert, J. Breakthroughs in the development of semiconductor-sensitized solar cells. J. Phys. Chem. Lett. 1, 3046–3052 (2010).
This work was supported by Eni, S.p.A (Italy) through the MIT Energy Initiative Program. H.Y. is grateful for a Korean Government Overseas Scholarship. R.L. is grateful for a National Science Foundation Graduate Research Fellowship.
The authors declare no competing financial interests.
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Dang, X., Yi, H., Ham, M. et al. Virus-templated self-assembled single-walled carbon nanotubes for highly efficient electron collection in photovoltaic devices. Nature Nanotech 6, 377–384 (2011). https://doi.org/10.1038/nnano.2011.50
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