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Electrospun Composite Nanofiber Transparent Conductor Layer for Solar Cells

  • Justin Ritchie (a1), Joël Mertens (a1), Heejae Yang (a1), Peyman Servati (a2) and Frank K. Ko (a1)...
Abstract
ABSTRACT

Developing a durable and scalable transparent conductor (TC) as an electrode with high optical transmission and low sheet resistance is a significant opportunity for enabling next generation solar cell devices. High performance fibrous composite materials based on a carrier polymer with embedded functional nanostructures have the potential to serve as a TC with high surface area that can be deposited by the novel and scalable process of electrospinning. This work presents the development of a fibrous TC, where polyacrylonitrile (PAN) is used as a carrier polymer for multi-walled carbon nanotubes (MWCNT) to create electroactive nanofibers 200-500nm in diameter. Once carbonized, thin layers of this material have a low sheet resistance and high optical transmission. It is shown that in a two stage carbonization process, the second stage temperature of above 700C is the primary factor in establishing a highly conductive material and single layers of nanofibers are typically destabilized at high temperatures. A high performance TC has been developed through optimizing carbonization rates and temperatures to allow for single nanofiber layers fabricated by electrospinning MWCNT/PAN solutions onto quartz. These TCs have been optimized for concentrations of MWCNTs less than 20% volume fraction with well above 90% transmissivity and sheet resistances of between .5-1kohm/square. The required MWCNT loading is well below that for TCs based on random networks of MWCNTs.

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1.How Long Will it Last?”. New Scientist 194 (2605): 3839. May 26, 2007.
2.Kalowekamo J., & Baker E. (2009). Estimating the manufacturing cost of purely organic solar cells. Solar Energy, 83(8), 1224-1231. Elsevier Ltd. doi:10.1016/j.solener.2009.02.003
3.Glatkowski et al. ., “ Carbon nanotube transparent electrodes: A case for photovoltaics,” in Photovoltaic Specialists Conference (PVSC), 2009 34th IEEE, pp. 001302001305, 2010.
4.Green A. A., & Hersam M. C. (2008). Colored Semitransparent Conductive Coatings Consisting of Monodisperse Metallic Single-Walled Carbon Nanotubes. Nano Letters, 8(5), 14171422. doi:10.1021/nl080302f
5.De S., Lyons P. E., Sorel S., Doherty E. M., King P. J., Blau W. J., Nirmalraj P. N., et al. . (2009). Transparent, Flexible, and Highly Conductive Thin Films Based on Polymer−Nanotube Composites. ACS Nano, 3(3), 714720. doi:10.1021/nn800858w
6.Hellstrom S. L., Lee H. W., & Bao Z. (2009). Polymer-Assisted Direct Deposition of Uniform Carbon Nanotube Bundle Networks for High Performance Transparent Electrodes. ACS Nano, 3(6), 14231430. doi:10.1021/nn9002456
7.Ko F. K., & Yang H. (2008). Functional Nanofibre: Enabling Material for the Next Generations Smart Textiles. Journal of Fiber Bioengineering and Informatics, 1(2), 8192. doi:10.3993/jfbi09200801
8.Hou H., Ge J. J., Zeng J., Li Q., Reneker D. H., Greiner A., & Cheng S. Z. D. (2005). Electrospun Polyacrylonitrile Nanofibers Containing a High Concentration of Well-Aligned Multiwall Carbon Nanotubes. Chemistry of Materials, 17(5), 967973. doi:10.1021/cm0484955
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  • EISSN: 1946-4274
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