Rapid low-temperature solution growth of ZnO:Co nanorod arrays with controllable visible light absorption

Kegel, Jan; Halpin, Jennifer; Laffir, Fathima; Povey, Ian M.; Pemble, Martyn E.

doi:10.1039/c7ce00378a

Cited by 10 publications

(9 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…32 Accordingly, the increased intensity of this mode for the cobalt-doped sample compared to the undoped sample suggests that the Co-doped sample contains a higher density of defects and lattice disorders, which is in agreement with literature. 33 It is also important to note that there is no additional peak in the Raman spectra of the CZTS and Co-doped CZTS samples, which further conrms the absence of any spurious (and/or impurity) phases of dopant in the samples according to the literature survey. 32 Fig.…”

Section: Resultsmentioning

confidence: 78%

Enhanced electrocatalytic hydrogen generation from water via cobalt-doped Cu₂ZnSnS₄ nanoparticles

et al. 2018

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 78%

Enhanced electrocatalytic hydrogen generation from water via cobalt-doped Cu₂ZnSnS₄ nanoparticles

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Synthesis of cobalt-doped ZnO nanorod-arrays.-The growth solution was prepared by adapting a recently reported solution based method. 51 1.1 g ZnAc and the required amount of CoAc were dissolved in ca. 25 ml H 2 O under constant stirring for 30 min at room temperature (0.125 g, 0.250 g, 0.374 g for 10%, 20% and 30% Co concentration in respect to Zn concentration in the growth solution, respectively.…”

Section: Methodsmentioning

confidence: 99%

ZnO Nanorod-Arrays as Photo-(Electro)Chemical Materials: Strategies Designed to Overcome the Material's Natural Limitations

Kegel

Povey

Pemble

2017

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

The urgent need for clean and storable energy drives many currently topical areas of materials research. Among the many materials under investigation zinc oxide is one of the most studied in relation to its use in photo-(electro)chemical applications. This study aims to give an overview of some of the main challenges associated with the use of zinc oxide for these applications: the high density of intrinsic defects which can lead to fast recombination, low visible light absorption and the occurrence of photo-corrosion. Employing simple low-temperature solution based methods; it is shown how defect-engineering can be used to increase the photoelectrochemical performance and how doping can strongly increase the visible light absorption of zinc oxide nanorod-arrays. Furthermore the deposition of ultra-thin titanium dioxide layers using atomic layer deposition is investigated as possible route for the protection of zinc oxide against photo-corrosion. As one of the most studied metal-oxides Zinc Oxide (ZnO) has already found its way into many industrial applications. Nevertheless enormous research interest is still focused on this earth-abundant, environmentally-friendly material as it offers interesting material properties such as a high exciton binding energy, a direct bandgap and comparably high charge carrier mobility.1 Furthermore the ability to grow ZnO nanostructures using a wide range of deposition techniques offers new perspectives for the material to be used in opto-electronics. Low-temperature solution based methods are of particular interest as possible routes to the low-cost growth of high surface-area nanostructures for the integration of ZnO into novel energy production and storage devices. The steadily growing research areas of solar water splitting and photo-catalysis are prominent examples of areas where interest in ZnO-based materials and devices may be found. [4][5][6][7][8][9][10][11] For these applications the nature of the semiconductor/electrolyte interface plays a crucial role. It is of the highest importance to carefully engineer the materials properties in order ensure effective charge carrier transport across the interface. In turn it must be the goal of materials research to tailor the ZnO toward these target applications, where possible addressing the key issues of:Low visible-light absorption.-Since ZnO exhibits a large bandgap (ca. 3.3 eV) only a small fraction of sunlight is absorbed thus dramatically hindering the use of ZnO for photo-(electro)chemical applications. A common strategy to change the electronic structure of a semiconductor is the introduction of dopants into the host material. In the case of ZnO the material has been doped with various elements whereby many studies focus on doping with transition metals (TMs) such as nickel, magnesium, iron or cobalt.7,12-17 Historically, research focused on transition metal doping has been fueled by the possible creation of ferromagnetism in these materials -especially in the case of cobalt doping. 12,15,[18][19][20][21] On the other h...

show abstract

“…It is probably due to the Zn 1Àx Co x O solid solution formation. 45,46 And the intensity of the band gap absorption also enhances with the increase of Co content. Fig.…”

Section: Resultsmentioning

confidence: 97%

MOF-derived Co/ZnO@silicalite-1 photocatalyst with high photocatalytic activity

et al. 2017

View full text Add to dashboard Cite

show abstract

Rapid low-temperature solution growth of ZnO:Co nanorod arrays with controllable visible light absorption

Cited by 10 publications

References 60 publications

Enhanced electrocatalytic hydrogen generation from water via cobalt-doped Cu₂ZnSnS₄ nanoparticles

Enhanced electrocatalytic hydrogen generation from water via cobalt-doped Cu₂ZnSnS₄ nanoparticles

ZnO Nanorod-Arrays as Photo-(Electro)Chemical Materials: Strategies Designed to Overcome the Material's Natural Limitations

MOF-derived Co/ZnO@silicalite-1 photocatalyst with high photocatalytic activity

Contact Info

Product

Resources

About

Rapid low-temperature solution growth of ZnO:Co nanorod arrays with controllable visible light absorption

Cited by 10 publications

References 60 publications

Enhanced electrocatalytic hydrogen generation from water via cobalt-doped Cu2ZnSnS4 nanoparticles

Enhanced electrocatalytic hydrogen generation from water via cobalt-doped Cu2ZnSnS4 nanoparticles

ZnO Nanorod-Arrays as Photo-(Electro)Chemical Materials: Strategies Designed to Overcome the Material's Natural Limitations

MOF-derived Co/ZnO@silicalite-1 photocatalyst with high photocatalytic activity

Contact Info

Product

Resources

About

Enhanced electrocatalytic hydrogen generation from water via cobalt-doped Cu₂ZnSnS₄ nanoparticles

Enhanced electrocatalytic hydrogen generation from water via cobalt-doped Cu₂ZnSnS₄ nanoparticles