Comparison of electron injection and recombination on TiO2 nanoparticles and ZnO nanorods photosensitized by phthalocyanine
Entity
UAM. Departamento de Química OrgánicaPublisher
Royal SocietyDate
2018-07-11Citation
10.1098/rsos.180323
Royal Society Open Science 5.7 (2018): 180323
ISSN
2054-5703DOI
10.1098/rsos.180323Funded by
Spanish MINECO (CTQ2017-85393-P) and the Comunidad de Madrid (FOTOCARBON, S2013/MIT-2841) are highly acknowledged. K.V. acknowledges the Doctoral Programme of Tampere University of Technology for the financial support.Project
Gobierno de España. CTQ2017-85393-P; Comunidad de Madrid. S2013/MIT-2841/FOTOCARBONEditor's Version
https://doi.org/10.1098/rsos.180323Subjects
Photo-induced electron transfer; Phthalocyanine; Semiconductor–organic interface; TiO nanoparticles 2; ZnO nanorods; QuímicaRights
© 2018 The AuthorsAbstract
Titanium dioxide (TiO2) and zinc oxide (ZnO) semiconductors have similar band gap positions but TiO2performs better as an anode material in dye-sensitized solar cell applications. We compared two electrodes made of TiO2nanoparticles and ZnO nanorods sensitized by an aggregation-protected phthalocyanine derivative using ultrafast transient absorption spectroscopy. In agreement with previous studies, the primary electron injection is two times faster on TiO2, but contrary to the previous results the charge recombination is slower on ZnO. The latter could be due to morphology differences and the ability of the injected electrons to travel much further from the sensitizer cation in ZnO nanorods
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Google Scholar:Virkki, K.
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Tervola, E.
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Ince, M.
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Torres Cebada, Tomás
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Tkachenko, N. V.
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