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Applied Physics Letters : ZnO nanowire arrays: Optical scattering and sensitization to solar light

By Ramón Tena-Zaera, Jamil Elias, and Claude Lévy-Clément

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Book Id: WPLBN0002169247
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 11 December 2008

Title: Applied Physics Letters : ZnO nanowire arrays: Optical scattering and sensitization to solar light  
Author: Ramón Tena-Zaera, Jamil Elias, and Claude Lévy-Clément
Volume: Issue : December 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection, Applied Physics Letters Collection
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Publisher: American Institute of Physics

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Jamil Elias, And Claude Lévy-Clémen, R. T. (n.d.). Applied Physics Letters : ZnO nanowire arrays: Optical scattering and sensitization to solar light. Retrieved from http://www.worldjournal.org/


Description
Description: Arrays of ZnO nanowires with different lengths (0.5–2 μm) and diameters (100–330 nm) were electrodeposited to study the influence of the nanowire dimensions on light scattering. The nanowire length and diameter were found to be major parameters in modifying the intensity and the wavelength of the scattered radiation, respectively. A significant scattering for the whole visible wavelength range was attained in arrays of ZnO nanowires of ∼ 1.5 μm in length and ∼ 330 nm in diameter. ZnO nanowire arrays were sensitized to solar light with a conformally deposited thin CdSe layer. A clear correlation between light scattering before coating and absorption in the resulting ZnO/CdSe core-shell nanostructures was found. The enhancement in the scattering for wavelengths where CdSe exhibits a relatively low absorption coefficient resulted in an effective absorption, in the 400–725 nm range of the AM1.5 solar spectrum, as high as 88% with a CdSe shell thickness of ∼ 20 nm only.

 
 


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