Nanostructured conformal hybrid solar cells: a promising architecture towards complete charge collection and light absorption
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Date
2013-08-22
Authors
Iza, Diana C.
Munoz-Rojas, David
Musselman, Kevin P.
Weickert, Jonas
Jakowetz, Andreas C.
Sun, Haiyan
Ren, Xin
Hoye, Robert L. Z.
Lee, Joon H.
Wang, Haiyan
Advisor
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Abstract
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.
Description
Keywords
Photovoltaic, Electrodeposition, P3HT-PCBM, Bulk heterojunction, Nanostructured, ZnO nanorod arrays, Hybrid solar cells