期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 647, 期 -, 页码 402-406出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.06.132
关键词
TiO2 nanosheets array; PbS/CdS QDs; Photoelectrolchemical
资金
- Science and Technology Development Program of Jilin Province [20110417]
- Graduate Innovation Found of Jilin University [2015024]
Herein, PbS/CdS quantum dots (QDs) co-sensitized titanium dioxide nanosheets array (TiO(2)NSs) films were reported for the first time. The TiO(2)NSs films exposed {001} facets were vertically grown on transparent conductive fluorine-doped tin oxide (FTO) glass substrates by a facile hydrothermal method. The PbS/CdS QDs were assembled on TiO(2)NSs photoelectrode by successive ionic layer adsorption and reaction (SILAR). The X-ray diffraction pattern (XRD) and transmission electron microscopy (TEM) verified that QDs with a diameter less than 20 nm were uniformly anchored on the surface of the TiO(2)NSs films. The QDs co-sensitization can significantly extend the absorption range and increase the absorption property of the photoelectrode by UVevis absorption spectra. The optimal photoelectrolchemical (PEC) performance of PbS/CdS QDs co-sensitization TiO(2)NSs was with photocurrent density of 6.12 mA cm(-2) under an illumination of AM 1.5 G, indicating the TiO(2)NSs films co-sensitized by PbS/CdS QDs have potential applications in solar cells. (C) 2015 Elsevier B.V. All rights reserved.
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