Issue 7, 2010

Design and characterization of porphyrin sensitizers with a push-pull framework for highly efficient dye-sensitized solar cells

Abstract

Novel porphyrin dyes YD14–YD17 with a push-pull framework were synthesized for dye-sensitized solar cells (DSSC); their spectral, electrochemical and photovoltaic properties were investigated. The absorption bands of these porphyrin dyes are broadened and red-shifted upon introduction of electron-donating groups (EDG) to the meso-positions via extension of π-conjugation. Electrochemical tests show that the first oxidation for these porphyrins occurs at a potential greater than that of the I/I3 redox couple, and attachment of EDGs to the periphery of the porphyrin facilitates electron abstraction. The photovoltaic measurements show that YD14 and YD17 have a power conversion efficiency of ∼7%. Introduction of EDGs to various meso-positions is demonstrated to be achievable, and porphyrin dyes with appropriate EDGs are promising candidates for highly efficient DSSCs.

Graphical abstract: Design and characterization of porphyrin sensitizers with a push-pull framework for highly efficient dye-sensitized solar cells

Supplementary files

Article information

Article type
Paper
Submitted
03 Mar 2010
Accepted
21 Apr 2010
First published
14 Jun 2010

Energy Environ. Sci., 2010,3, 949-955

Design and characterization of porphyrin sensitizers with a push-pull framework for highly efficient dye-sensitized solar cells

S. Wu, H. Lu, H. Yu, S. Chuang, C. Chiu, C. Lee, E. W. Diau and C. Yeh, Energy Environ. Sci., 2010, 3, 949 DOI: 10.1039/C003872P

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