Organic photovoltaic devices incorporating nanostructures in the photoactive layer: Towards clean solar energy generation

Sulaiman, K. and Fakir, M.S. and Yusli, M.N. and Abd. Wahab, F. (2011) Organic photovoltaic devices incorporating nanostructures in the photoactive layer: Towards clean solar energy generation. In: SET 2011, 10th International Conference on Sustainable Energy Technologies, 04-07 Sep 2011, Istanbul, Turkey.

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Abstract

In this article we report the nanostructures formation in the thin films of several organic semiconductors. The thin films have been deposited onto glass substrates by a solution processable of spin-coating technique. The nanostructures are obtained by applying a simple surface solvent treatment process either by soaking or solvent vapor treatment. The influence of solvent treatment on the surface morphological properties has been investigated via a surface profilometer, absorption spectroscopy, Xray Diffraction Spectroscopy and Atomic Force Microscopy (AFM). It reveals that the spin-coated TsCuPc thin films have nanostructures as evident from the surface profile image, which then confirmed by AFM image. Besides, the polymer chains have been re-organized after solvent treatment and the crystallinity is increased. Such crystalline increment provides a better pathway for charge carrier transport. The photovoltaic performance has improved to some extent for the device containing nano-structured film. We infer this enhancement is due to a larger interface area for exciton dissociation to generate free charge carriers of electrons and holes within the nanostructured film.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Organic solar cells, photovoltaic, organic semiconductors, thin films, nanostructures.
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Science > Dept of Physics
Depositing User: Mr. Mohd Samsul Ismail
Date Deposited: 25 Feb 2015 01:54
Last Modified: 18 May 2018 04:19
URI: http://eprints.um.edu.my/id/eprint/12805

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