The effect of CuS counter electrodes for the CdS/CdSe quantum dot co-sensitized solar cells based on zinc titanium mixed metal oxides

The highly catalytic copper sulfide (CuS) thin films were designed and combined with the FTO substrates by the chemical bath deposition method and were used as counter electrodes (CEs) for the CdS/CdSe quantum dot-sensitized solar cells (QDSSCs) based on zinc titanium mixed metal oxides (MMOs) deriv...

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Bibliographic Details
Published in:Journal of materials science 2019-03, Vol.54 (6), p.4884-4892
Main Authors: Liu, Dong, Liu, Jianqiang, Liu, Jie, Liu, Sha, Wang, Chenglei, Ge, Zhongwei, Hao, Xiaotao, Du, Na, Xiao, Hongdi
Format: Article
Language:English
Subjects:
Cadmium selenides
Cadmium sulfide
Catalysis
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Copper
Copper sulfides
Crystallography and Scattering Methods
Deposition
Dielectric films
Diffraction
Electrodes
Energy conversion efficiency
Energy Materials
Hydroxides
Materials Science
Metal oxides
Morphology
Organic chemistry
Photovoltaic cells
Platinum
Polymer Sciences
Quantum dots
Scanning electron microscopy
Solar batteries
Solar cells
Solar energy industry
Solid Mechanics
Substrates
Thin films
Titanium
X-ray diffraction
X-rays
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Summary:The highly catalytic copper sulfide (CuS) thin films were designed and combined with the FTO substrates by the chemical bath deposition method and were used as counter electrodes (CEs) for the CdS/CdSe quantum dot-sensitized solar cells (QDSSCs) based on zinc titanium mixed metal oxides (MMOs) deriving from the layered double hydroxide precursor for the first time. Formation of CuS films was confirmed by X-ray diffraction and X-ray photon spectroscopy. The surface morphology of CuS films was observed by scanning electron microscopy (SEM). Systemic electrochemical test was used to investigate the catalytic performance of CuS films and the photovoltaic performance of QDSSCs. When the number of deposition cycles (30 min per cycle) was two, the CuS CEs of excellent performance were obtained. The CuS CEs exhibited higher performance for QDSSCs based on ZnTi MMOs than the conventional platinum (Pt) CEs. The best power conversion efficiency of CdS/CdSe QDSSCs using optimal CuS CEs reached 3.95%, which is more than twice higher than that of Pt CEs.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-018-03203-y