Open Access Nano Express

Nanostructured hybrid ZnO thin films for energy conversion

Mónica Moya1, Anura Priyajith Samantilleke2*, Miquel Mollar1 and Bernabé Marí1*

Author Affiliations

1 Department de Física Aplicada-IDF, Universitat Politècnica de València, Camí de Vera s/n, 46022, València, Spain

2 Centro de Física, Universidade do Minho, Braga, 4700-057 Braga, Portugal

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Nanoscale Research Letters 2011, 6:384  doi:10.1186/1556-276X-6-384

Published: 16 May 2011

Abstract

We report on hybrid films based on ZnO/organic dye prepared by electrodeposition using tetrasulfonated copper phthalocyanines (TS-CuPc) and Eosin-Y (EoY). Both the morphology and porosity of hybrid ZnO films are highly dependent on the type of dyes used in the synthesis. High photosensitivity was observed for ZnO/EoY films, while a very weak photoresponse was obtained for ZnO/TS-CuPc films. Despite a higher absorption coefficient of TS-CuPc than EoY, in ZnO/EoY hybrid films, the excited photoelectrons between the EoY levels can be extracted through ZnO, and the porosity of ZnO/EoY can also be controlled.