Micrometer-Sized Fluorine Doped Tin Oxide As Fast Electron Collector for Enhanced Dye-Sensitized Solar Cells

Autor:	Fei Gao, Zhao Li, Lu Zhou, Jinghui Zeng, Ye Feng Wang, Xiao Rui Cui
Rok vydání:	2014
Předmět:	Materials science Open-circuit voltage Energy conversion efficiency Doping Nanotechnology Tin oxide Dielectric spectroscopy Micrometre chemistry.chemical_compound Dye-sensitized solar cell chemistry Chemical engineering Titanium dioxide General Materials Science
Zdroj:	ACS Applied Materials & Interfaces. 6:16593-16600
ISSN:	1944-8252 1944-8244
Popis:	Titanium dioxide (TiO2)-layered fluorine doped tin oxide (FTO) powder was synthesized and applied as the photoanode in dye-sensitized solar cells (DSSCs). FTO powders are connected to form a direct electron pathway for the efficient extract of injected electrons, while the TiO2 layer serves as an energy barrier prohibiting the charge combination with oxidized dye or I3(-). The electrochemical impedance spectroscopy (EIS) analyses suggest that electrons have a longer combination lifetime (τe = 233 ms) than that of the electron in the DSSCs using traditional P25 photoanodes (τe = 28 ms). The DSSCs using 5 μm thick TiO2@FTO as photoanodes eventually give a respectable and long-term stable photovoltaic performance with a current density of 23.8 mA/cm(2), an open circuit voltage of 0.69 V, and power conversion efficiency of 7.4%. The results are received on a low dye loading level (0.25 × 10(-7) mol/cm(2)), which is (1)/10 of that for traditional photoanode (2.79 × 10(-7) mol/cm(2)).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e70466d6909fe45b8428bea734151ec https://doi.org/10.1021/am503074j Zobrazit plný text záznamu