Synthesis of hierarchical structure cuprous oxide by a novel two-step hydrothermal method and the effect of its addition on the photovoltaic properties of ZnO-based dye-sensitized solar cells

Zhou, Xiaofeng; Xie, Yahong; Ma, Jing; Mi, Hongyu; Yang, Jianya; Cheng, Jian; Hoang, Tuan K.A.

doi:10.1016/j.jallcom.2017.05.334

Cited by 9 publications

(4 citation statements)

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“…The lattice constant values of a pure ZnO film are a = b = 3.253 Å and c = 5.236 Å, which are quite similar with PDF # 36‐1451, 74 highlighted the purity of the ZnO thin film 46 . When 1% Ti is doped into the ZnO thin film, the a‐axis length decreases while the c‐axis length increases.…”

Section: Resultssupporting

confidence: 64%

“…The values of a, c, and the c/a ratio, at different peaks corresponding to the plane (101), obtained from XRD results are very similar to the PDF card number 36-1451 ( Figure 4). 73 The lattice constant values of a pure ZnO film are a = b = 3.253 Å and c = 5.236 Å, which are quite similar with PDF # 36-1451, 74 highlighted the purity of the ZnO thin film. 46 When 1% Ti is doped into the ZnO thin film, the a-axis length decreases while the c-axis length increases.…”

Section: Lattice Constants (A = B C)supporting

confidence: 57%

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Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

et al. 2020

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Summary ZnO, 1% Ti doped ZnO and 1% Ti and (0.5%, 1%, and 1.5%) Cu co‐doped ZnO thin films are deposited on fluorine doped tin oxide glass substrates using sol‐gel technique. The impact of Ti and Cu co‐doping on optical, structural, and photovoltaic properties of ZnO thin films have been analyzed. X‐ray diffraction also confirms the hexagonal wurtzite crystal structure of the film. The 1% Ti and 1% Cu co‐doping percentage has an astonishing impact on the structural properties of the doped film, such as large grain size (19 nm), d‐spacing (2.48 Å), small dislocation line density (2.96 × 1015 m−2), lattice parameters (a = b = 3.2 Å, c = 5.2 Å), bond length (1.9 Å) and positional parameter (3.7 × 10−1) of the ZnO thin film. Optical parameters like reflectance, absorbance, transmittance, refractive index, and dielectric constants are calculated in the range of spectral from (250‐750) nm by using an ultraviolet ‐ visible spectrophotometer. In the visible region, all the films have approximately 85% transmittance, which is excellent for solar cells. The ZnO film prepared at the co‐doping percentage of 1% Ti and 1% Cu has high absorbance, high refractive index (2.09) and small band gap energy (3.37 eV) as compared to other doped films. The dye‐sensitized solar cells of these films as a Photoanode have been fabricated and studied the efficiency variation of films. It is found that the performance of the dye‐sensitized solar cell (DSSC) using a Ti‐Cu co‐doped film is much better than a pure ZnO film. The highest efficiency of DSSC 2.38% is achieved in the dye‐sensitized solar cell by using a 1% Ti and 1% Cu co‐doped ZnO thin film. When Ti is doped in ZnO then the surface area and pore size of the ZnO increased, which increase the dye loading ability. Cu reduces the recombination rate and enhances the electron injection efficiency rate from the dye to the conduction band of ZnO. Therefore, it is suggested that the thin films prepared by co‐doping of Cu and Ti into ZnO will upgrade the efficiency of cell.

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Section: Resultssupporting

confidence: 64%

Section: Lattice Constants (A = B C)supporting

confidence: 57%

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

et al. 2020

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“…Figure 5A-C shows the Cu 2p , Zn 2p , and O 1s XPS spectra of Cu 2 O, ZnO, and Cu 2 O/ZnO (sample II), respectively. In Figure 5A, the peaks of pure Cu 2 O at 932.4 and 952.0 eV are related to the binding energy of Cu 2P3/2 and Cu 2P1/2 , which is consistent with the Cu + species [18,[24][25][26]. Compared to the peaks of pure Cu 2 O, the binding energy of Cu 2 O/ZnO peaks shift at 0.1 eV to lower binding energy.…”

Section: Resultssupporting

confidence: 56%

Photocatalytic activity of Cu₂O/ZnO nanocomposite for the decomposition of methyl orange under visible light irradiation

Wang

Zhang

Wang

et al. 2018

Science and Engineering of Composite Materials

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ZnO is modified by Cu2O by the process of precipitation and calcination. X-ray diffraction has shown that Cu2O/ZnO catalysts are made of highly purified cubic Cu2O and hexagonal ZnO. Scanning electron microscopy and transmission electron microscopy have shown that ZnO adhered to the surface of Cu2O. Due to the doping of Cu2O, the absorption range of the Cu2O/ZnO catalyst is shifted from the ultraviolet to the visible region due to diffuse reflection. X-ray photoelectron spectroscopy and photoluminescence spectra have confirmed that there is a substantial interaction between the two phases of the resultant catalyst. The degradation efficiency of Cu2O/ZnO on methyl orange solution is obviously enhanced compared to Cu2O and ZnO. The maximum degradation efficiency is 98%. The degradation efficiency is affected by the pH of the solution and initial concentration. After three rounds of recycling, the degradation rate is almost same. This shows a consistent performance of Cu2O/ZnO. The increase in catalytic ability is related to the lattice interaction caused by the doping of Cu2O.

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“…Copper(I) oxide (Cu 2 O) is a p-type semiconductor with a narrow direct bandgap energy of 2.2 eV which is beneficial to the photocatalysed redox reaction under solar radiation [ 1 , 2 ]. Therefore, Cu 2 O is known to be suitable for using the visible light compared with other oxide materials including TiO 2 [ 3 ], ZnO [ 4 ], WO 3 [ 5 ], ZnS, [ 6 ] ZrO [ 7 ] and NiO [ 8 ] that have larger bandgap energy in the range of 2.8–4.0 eV, which is more appropriate for ultraviolet (UV) absorption [ 6 ]. Whereas sunlight has the main radiation in the range of visible light (47%) and infrared (46%), UV radiation is only 4–7% [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Phases evolution and photocatalytic activity of Cu ₂ O films electrodeposited from a non-pH-adjusted solution

Budi,

Takahashi,

Sutrisno

et al. 2023

R. Soc. open sci.

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A pure-phase Cu 2 O film photocatalyst was successfully prepared by the electrodeposition technique from a non-pH-adjusted solution. To investigate the phase evolution and photocatalytic activity of the film, the electrodeposition was conducted at different deposition temperatures. Photocatalytic activity of the films was evaluated from methylene blue (MB) dye degradation. The Cu 2 O phase initially appeared at room temperature and its fraction was found to increase with increasing the deposition temperature, while the impurity phase was successfully diminished. A pure Cu 2 O film with a narrow optical bandgap energy of 1.96 eV was obtained at 75°C. The multi-faceted crystals were found to form at 45°C and became a truncated octahedral structure that possessed {111} and {100} facets as deposition temperature further increased. A preferred orientation growth of {110} facet, which is known to possess a relatively high surface energy, was produced at 75°C. The performance of MB photodegradation enhanced gradually by increasing the deposition temperature. The increase of photocatalytic activity could be attributed to the rise of photoelectrochemical response and the decrease of resistance charge transfer because of narrowing bandgap energy, increasing Cu 2 O fraction, and growing a relatively high catalytic activity facet which had escalated redox reaction that decomposed MB at the photocatalyst–solution interface.

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Synthesis of hierarchical structure cuprous oxide by a novel two-step hydrothermal method and the effect of its addition on the photovoltaic properties of ZnO-based dye-sensitized solar cells

Cited by 9 publications

References 44 publications

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

Photocatalytic activity of Cu₂O/ZnO nanocomposite for the decomposition of methyl orange under visible light irradiation

Phases evolution and photocatalytic activity of Cu ₂ O films electrodeposited from a non-pH-adjusted solution

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Synthesis of hierarchical structure cuprous oxide by a novel two-step hydrothermal method and the effect of its addition on the photovoltaic properties of ZnO-based dye-sensitized solar cells

Cited by 9 publications

References 44 publications

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

Structural and optical properties of Ti and Cu co‐doped ZnO thin films for photovoltaic applications of dye sensitized solar cells

Photocatalytic activity of Cu2O/ZnO nanocomposite for the decomposition of methyl orange under visible light irradiation

Phases evolution and photocatalytic activity of Cu 2 O films electrodeposited from a non-pH-adjusted solution

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Product

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Photocatalytic activity of Cu₂O/ZnO nanocomposite for the decomposition of methyl orange under visible light irradiation

Phases evolution and photocatalytic activity of Cu ₂ O films electrodeposited from a non-pH-adjusted solution