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

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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.

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Keywords

Photovoltaic, Electrodeposition, P3HT-PCBM, Bulk heterojunction, Nanostructured, ZnO nanorod arrays, Hybrid solar cells

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