Dye-sensitized solar cells : sensitizer-dependent injection into ZnO nanotube electrodes

Two porphyrin-based dyes with carboxylic acid tethers of differing acidity in both protonated and deprotonated forms were examined on ZnO nanotube electrodes. All of the dyes have similar surface coverage, but only the more acidic dye in the acid form injects electrons well; this dye is the only one...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 26(2010), 3 vom: 02. Feb., Seite 1401-4
1. Verfasser: Jensen, Rebecca A (VerfasserIn)
Weitere Verfasser: Van Ryswyk, Hal, She, Chunxing, Szarko, Jodi M, Chen, Lin X, Hupp, Joseph T
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a Two porphyrin-based dyes with carboxylic acid tethers of differing acidity in both protonated and deprotonated forms were examined on ZnO nanotube electrodes. All of the dyes have similar surface coverage, but only the more acidic dye in the acid form injects electrons well; this dye is the only one that corrodes the ZnO. In control experiments on TiO(2) nanoparticle electrodes, both dyes load and inject in protonated and deprotonated forms. These results are consistent with a requirement that the dye must partially corrode the ZnO surface in order for efficient injection to occur. Alternatively, it may possibly point to a coupling of electron injection to proton uptake 
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700 1 |a She, Chunxing  |e verfasserin  |4 aut 
700 1 |a Szarko, Jodi M  |e verfasserin  |4 aut 
700 1 |a Chen, Lin X  |e verfasserin  |4 aut 
700 1 |a Hupp, Joseph T  |e verfasserin  |4 aut 
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