Title: Electronically coupled porphyrin-arene dyads for dye-sensitized solar cells
Authors: Lee, Cheng-Wei
Lu, Hsueh-Pei
Reddy, Nagannagari Masi
Lee, Hsuan-Wei
Diau, Eric Wei-Guang
Yeh, Chen-Yu
Department of Applied Chemistry
Institute of Molecular science
Keywords: pi-Conjugation;Dye-sensitized solar cells;Electronic coupling;Light-harvesting;Perylenes;Porphyrins
Issue Date: 1-Dec-2011
Abstract: An acetylene-linked porphyrin-perylene anhydride and an acetylene-linked porphyrin-naphthalic anhydride have been synthesized; the highly conjugated acetylenic bridge in these porpyrins efficiently mediates electronic interaction between the porphyrin and perylene units to extend the pi-conjugation of the porphyrin dye and to cause both broadening and red shifts of both the Soret and Q absorption bands. This condition is a useful feature for efficient dye-sensitized solar cell applications. The optical, electrochemical and photovoltaic properties of the new linked anhydrides show that the HOMO-LUMO gap decreased upon extension of pi-conjugation, indicating a strong electronic coupling between the porphyrin and the perylene or naphthalene unit. (C) 2011 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.dyepig.2011.04.010
ISSN: 0143-7208
DOI: 10.1016/j.dyepig.2011.04.010
Volume: 91
Issue: 3
Begin Page: 317
End Page: 323
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