Orientation modulation of ZnO nanorods on charge transfer performance enhancement for Sb2S3 quantum dot sensitized solar cells
ZnO nanorod films are prepared by electrochemical deposition process, which are employed as the photo-electrodes for the Sb2S3 quantum dot sensitized solar cells. The orientation of ZnO nanorods (NRs) is modulated by different heating time. The changing on orientation of ZnO NRs has no influences on...
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Veröffentlicht in: | Journal of alloys and compounds 2020-03, Vol.816, p.152628, Article 152628 |
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Sprache: | eng |
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Zusammenfassung: | ZnO nanorod films are prepared by electrochemical deposition process, which are employed as the photo-electrodes for the Sb2S3 quantum dot sensitized solar cells. The orientation of ZnO nanorods (NRs) is modulated by different heating time. The changing on orientation of ZnO NRs has no influences on UV–Vis absorption spectra. And the photoluminescence spectra indicates that the random orientation ZnO NRs has the better charge separation property. Due to the much more transfer paths from the random orientation of ZnO NRs, the Sb2S3 quantum dot sensitized ZnO NRs solar cells by heating time of 20 min has exhibited an excellent charge transfer property, which can obtain much higher current density of the solar cells, achieving a photovoltaic power conversion efficiency of 2.43%.
•Different orientation of ZnO NRs are prepared for Sb2S3 based photo-electrodes.•Excellent charge separation property have been exhibited for random orientation of ZnO NRs.•More paths and high rate of charge transfer property can be obtained by random orientation of ZnO NRs.•The random orientation of ZnO NRs/Sb2S3 based solar cells exhibits photovoltaic efficiency of 2.43%. |
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ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2019.152628 |