Electrochemical synthesis of transparent nanocrystalline Cu2O films using a reverse potential waveform

Hu, Fei; Chan, Kang Cheung; Yue, Tai Man; Surya, C.

doi:10.1016/j.tsf.2013.10.008

Cited by 11 publications

(4 citation statements)

References 24 publications

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“…The first electrochemical synthesis of Cu 2 O was presented by Stareck [ 41 ]. Successively, many other authors developed different synthetic procedures using different copper precursors electrolytes and electrochemical parameters [ 42 , 43 , 44 ].…”

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

View full text Add to dashboard Cite

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“…One of the first discovered semiconductors for this purpose and nowadays one of the most studied materials is Cu 2 O. , It can possess p-type semiconducting properties together with a direct band gap of 2.17 eV . Furthermore, it is easy to prepare through a multitude of different techniques ranging from thermal oxidation to electrochemical deposition − and sol–gel techniques − and displays suitably placed conduction band (CB) and valence band (VB) edges . This renders Cu 2 O a promising choice as a photocathode .…”

Section: Introductionmentioning

confidence: 99%

Influence of Strain on the Band Gap of Cu₂O

et al. 2019

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Cu 2 O has been considered as candidate material for transparent conducting oxides and photocatalytic water splitting. Both applications require suitably tuned band gaps. Here we explore the influence of compressive and tensile strain on the band gap by means of density functional theory (DFT) modeling. Our results indicate, that the band gap decreases under tensile strain while it increases to a maximum under moderate compressive strain and decreases again under extreme compressive strain. This peculiar behavior is rationalized through a detailed analysis of the electronic structure by means of density of states (DOS), density overlap region indicators (DORI) and crystal overlap Hamilton populations (COHP). In contrary to previous studies we do not find any indications that the band gap is determined by d10-d10 interactions. Instead, our analysis clearly shows that both the conduction and valence band edges are determined by Cu−O antibonding states. The band gap decrease under extreme compressive strain is associated with the appearance of Cu 4sp states in the conduction band region.

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“…Several methods were involved in the production of Cu 2 O, such as sol-gel, 17 top-down approach with nanosecond and picosecond lasers, 18 honey aided solution synthesis, 19 electrochemical synthesis 20 and photonic crystal template-assisted electrodeposition. 21 However, a mixture of Cu, Cu 2 O and CuO was generally obtained by those methods and synthesis of pure Cu 2 O was scarce.…”

Section: Introductionmentioning

confidence: 99%

CVD synthesis of Cu₂O films for catalytic application

et al. 2015

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Electrochemical synthesis of transparent nanocrystalline Cu2O films using a reverse potential waveform

Cited by 11 publications

References 24 publications

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

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

Influence of Strain on the Band Gap of Cu₂O

CVD synthesis of Cu₂O films for catalytic application

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Electrochemical synthesis of transparent nanocrystalline Cu2O films using a reverse potential waveform

Cited by 11 publications

References 24 publications

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

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

Influence of Strain on the Band Gap of Cu2O

CVD synthesis of Cu2O films for catalytic application

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Product

Resources

About

Influence of Strain on the Band Gap of Cu₂O

CVD synthesis of Cu₂O films for catalytic application