Front Cover: Nanocoax solar cells based on aligned multiwalled carbon nanotube arrays (Phys. Status Solidi A 4/2011)
T. Paudel, J. Rybczynski, Y. T. Gao, Y. C. Lan, Y. Peng, K. Kempa, M. J. Naughton and Z. F. Ren
Article first published online: 11 APR 2011 | DOI: 10.1002/pssa.201190011
Paudel et al. (pp. 924–927) fabricated and studied solar cells based on the distributed nanocoax architecture by depositing amorphous silicon (a-Si) as photovoltaic medium on the arrays of aligned multi-wall carbon nanotubes (MWCNTs). These inexpensive cells demonstrate an initial efficiency of 6.1% that can be further enhanced by increasing the nanocoax density per unit area and improving the amorphous silicon quality. The cover image shows a false-color photograph of a nanocoax cell (size of a single coax is ca. 1 µm) and the curves of a I–V plot demonstrating the efficiency of a solar cell fabricated by employing these CNTs compared to a planar cell. In the sketch, the CNTs are shown in light grey, a-Si in red, and indium tin oxide in yellow.