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Formation of mixed aggregates between Zn2+ and eosinY relevant to the self-assembly of ZnO/eosinY hybrid materials

Published online by Cambridge University Press:  31 January 2011

Shigeo Hori  and
Tsukasa Yoshida
Shigeo Hori
Affiliation:
n3130018@edu.gifu-u.ac.jp, Gifu University, Environmental and Renewable Energy Systems Division, Gifu, Japan
Tsukasa Yoshida
Affiliation:
tyoshida@gifu-u.ac.jp, Gifu University, Environmental and Renewable Energy Systems Division, Gifu, Japan
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Abstract

Adsorption behavior of eosinY on ZnO and its complex formation with Zn2+ were studied in detail, changing the Zn2+ concentration, temperature, and pH of mixed solutions. While eosinY undergoes typical Langmuir type adsorption when the solution contains only eosinY, co-presence of Zn2+ lead to a formation of multilayer of eosinY. Red precipitates of mixed aggregates were obtained when ZnCl2 was added to a concentrated eosinY solution. Aggregation was further promoted when the temperature was elevated. While increase of pH resulted in a decrease of monolayer adsorption of eosinY in the absence of Zn2+, it promoted the formation of mixed aggregates in its presence. These aggregation behaviors of eosinY reasonably explained the changes of nanostructures of the electrodeposited ZnO/eosinY hybrid thin films.

Keywords

self-assemblyphotovoltaicelectrodeposition
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1211: Symposium R – Advanced Nanostructured Solar Cells , 2009 , 1211-R03-40
Copyright
Copyright © Materials Research Society 2010

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