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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.
|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.||摘要:||
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.
|Appears in Collections:||化學系所|
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