Carbon nanotube arrays for photovoltaic applications
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Vertically aligned periodic arrays of carbon nanotubes (CNTs) are used to create topographically enhanced light-trapping photovoltaic cells. The CNTs form the back contact of the device and serve as a scaffold to support the photoactive heterojunction. Molecular beam epitaxy is used to deposit CdTe and CdS as the p/n-type materials and ion-assisted deposition is used to deposit a conformal coating of indium-tin oxide as the transparent top contact. X-ray diffraction data shows (111) texture of the CdTe. Photocurrent produced “per cm2 of footprint” for the CNT-based device is 63 times that of a commercially available planar single crystal silicon device.
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- 8.M. Aslan et al., “Sulfur Diffusion in Polycrystalline Thin-Film CdTe Solar Cells,” Materials Research Society Symposium Proceedings (Warrendale, PA: MRS, 1997), pp. 203–208.Google Scholar
- 10.E. Katz, “Fullerenes for Photovoltaics,” Encyclopedia of Nanoscience and Nanotechnology, vol. 3, ed. Hari Singh Nalwa (Valencia, CA: American Scientific Publishers, 2004), pp. 661–683.Google Scholar