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標題: Design and characterization of porphyrin sensitizers with a push-pull framework for highly efficient dye-sensitized solar cells
作者: Wu, S.L.
Lu, H.P.
Yu, H.T.
Chuang, S.H.
Chiu, C.L.
Lee, C.W.
Diau, E.W.G.
Yeh, C.Y.
關鍵字: nanocrystalline tio2 films;electron-transfer;artificial;photosynthesis;photovoltaic properties;ruthenium sensitizers;organic;sensitizers;energy-conversion;light;phthalocyanine;architectures
Project: Energy & Environmental Science
期刊/報告no:: Energy & Environmental Science, Volume 3, Issue 7, Page(s) 949-955.
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 p-conjugation. Electrochemical tests show that the first oxidation for these porphyrins occurs at a potential greater than that of the I(-)/I(3)(-) 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 similar to 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.
ISSN: 1754-5692
DOI: 10.1039/c003872p
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