Nanostructured conformal hybrid solar cells: a promising architecture towards complete charge collection and light absorption
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We introduce hybrid solar cells with an architecture consisting of an electrodeposited ZnO nanorod array (NRA) coated with a conformal thin layer (< 50 nm) of organic polymer-fullerene blend and a quasi-conformal Ag top contact (Thin/NR). We have compared the performance of Thin/NR cells to conventional hybrid cells in which the same NRAs are completely filled with organic blend (Thick/NR). The Thin/NR design absorbs at least as much light as Thick/NR cells, while charge extraction is significantly enhanced due to the proximity of the electrodes, resulting in a higher current density per unit volume of blend and improved power conversion efficiency. The NRAs need not be periodic or aligned and hence can be made very simply.
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Diana C. Iza, David Munoz-Rojas, Kevin P. Musselman, Jonas Weickert, Andreas C. Jakowetz, Haiyan Sun, Xin Ren, Robert L. Z. Hoye, Joon H. Lee, Haiyan Wang, Lukas Schmidt-Mende, Judith L. MacManus-Driscoll (2013). Nanostructured conformal hybrid solar cells: a promising architecture towards complete charge collection and light absorption. UWSpace. http://hdl.handle.net/10012/13256
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