Spray pyrolytically deposited Fe-doped Cu2O thin films for solar hydrogen generation: Experiments &amp; first-principles analysis

Upadhyay, Sumit Kumar; Sharma, Dipika; Satsangi, Vibha R.; Shrivastav, Rohit; Waghmare, Umesh V.; Dass, Sahab

doi:10.1016/j.matchemphys.2015.04.001

Cited by 18 publications

(5 citation statements)

References 44 publications

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“…Higher concentrations generate more defects that, as recombination centers, reduce the charge separation. The recorded improved conductivity could be also due to the presence of Fe 3d states in the doped sample [ 125 , 126 ].…”

Section: Copper Oxide Based Materialsmentioning

confidence: 99%

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Baran¹,

Visibile

Busch

et al. 2021

Molecules

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This work aims at reviewing the most impactful results obtained on the development of Cu-based photocathodes. The need of a sustainable exploitation of renewable energy sources and the parallel request of reducing pollutant emissions in airborne streams and in waters call for new technologies based on the use of efficient, abundant, low-toxicity and low-cost materials. Photoelectrochemical devices that adopts abundant element-based photoelectrodes might respond to these requests being an enabling technology for the direct use of sunlight to the production of energy fuels form water electrolysis (H2) and CO2 reduction (to alcohols, light hydrocarbons), as well as for the degradation of pollutants. This review analyses the physical chemical properties of Cu2O (and CuO) and the possible strategies to tune them (doping, lattice strain). Combining Cu with other elements in multinary oxides or in composite photoelectrodes is also discussed in detail. Finally, a short overview on the possible applications of these materials is presented.

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Section: Copper Oxide Based Materialsmentioning

confidence: 99%

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Baran¹,

Visibile

Busch

et al. 2021

Molecules

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“…The recorded XRD spectra are shown in figure 2. For the analysed samples, the spectra reveal diffraction peaks at 2θ = 29.6°, 36 royalsocietypublishing.org/journal/rsos R. Soc. Open Sci.…”

Section: Resultsmentioning

confidence: 99%

“…However, the exciting physical properties of transition metal oxides arising from the d-electrons can also be affected or disappear with the modification of this band gap [34]. For this reason, researchers have tried to improve the electrical and optical properties of Cu 2 O by incorporating various transition metals such as cobalt [35], iron [35,36], manganese (Mn) [22,35,[37][38][39][40] and nickel [35]. In addition, the incorporation of other elements such as aluminium [41], cerium [42], lithium [43][44][45], magnesium (Mg) [1,43,[46][47][48], silver [41], sodium [44], samarium [49], titanium [44] and zinc [42,43,50] has also been evaluated.…”

Section: Introductionmentioning

confidence: 99%

Copper oxide nanoparticles doped with lanthanum, magnesium and manganese: optical and structural characterization

et al. 2022

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Copper oxide (Cu 2 O) is a promising semiconductor for photovoltaic and photocatalytic applications since this material has a high optical absorption coefficient and lower band gap (2.17 eV). Doped lanthanum (La), magnesium (Mg) and manganese (Mn) Cu 2 O nanoparticles (Cu 2 O Nps) were prepared by a displacement reaction. The doped and undoped Cu 2 O Nps were characterized with scanning electron microscopy–energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), transmission electron microscopy (TEM) and ultraviolet–visible spectroscopy. The EDS results confirm the presence of La, Mg and Mn in the Cu 2 O Nps. The XRD results confirm the formation a single cubic phase of Cu 2 O with a cuprite structure. TEM images confirm the formation of Nps with mean diameters between 12.0 ± 6.1 and 30.8 ± 11.0 nm. Doped and undoped Nps present a narrow band gap (2.40 eV), blue shifted with respect to bulk Cu 2 O.

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“…It is mainly due to the different ionic radii of alkaline ions: that of Li + (0.76 Å) is the closest to that of Cu + compared to others (Na + : 1.02 Å, and K + : 1.38 Å). Silver(Ag)-doped and iron(Fe)-doped Cu 2 O photocathodes were also introduced by Upadhyay et al [62,63]. They showed the improved PEC performances, compared to those of undoped Cu 2 O photocathodes (Figure 6c,d).…”

Section: Fundamentals and Research Progress 21 Cu 2 O Light Absorbermentioning

confidence: 98%

mentioning

confidence: 99%

Key Strategies on Cu2O Photocathodes toward Practical Photoelectrochemical Water Splitting

Son

2023

Nanomaterials

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Cuprous oxide (Cu2O) has been intensively in the limelight as a promising photocathode material for photoelectrochemical (PEC) water splitting. The state-of-the-art Cu2O photocathode consists of a back contact layer for transporting the holes, an overlayer for accelerating charge separation, a protection layer for prohibiting the photocorrosion, and a hydrogen evolution reaction (HER) catalyst for reducing the overpotential of HER, as well as a Cu2O layer for absorbing sunlight. In this review, the fundamentals and recent research progress on these components of efficient and durable Cu2O photocathodes are analyzed in detail. Furthermore, key strategies on the development of Cu2O photocathodes for the practical PEC water-splitting system are suggested. It provides the specific guidelines on the future research direction for the practical application of a PEC water-splitting system based on Cu2O photocathodes.

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Spray pyrolytically deposited Fe-doped Cu2O thin films for solar hydrogen generation: Experiments & first-principles analysis

Cited by 18 publications

References 44 publications

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Copper oxide nanoparticles doped with lanthanum, magnesium and manganese: optical and structural characterization

Key Strategies on Cu2O Photocathodes toward Practical Photoelectrochemical Water Splitting

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