Catalyst-assisted growth of InGaN NWs for photoelectrochemical water-splitting applications
| Autor: | P. Sundara Venkatesh, V. Purushothaman, P. Dharmaraj, G. Paulraj, Kulandaivel Jeganathan |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Band gap business.industry General Chemical Engineering General Engineering Nanowire Oxygen evolution General Physics and Astronomy 02 engineering and technology Chemical vapor deposition Chronoamperometry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Reversible hydrogen electrode Optoelectronics Water splitting General Materials Science 0210 nano-technology business Current density |
| Zdroj: | Ionics. 26:3465-3472 |
| ISSN: | 1862-0760 0947-7047 |
| Popis: | In this work, we have successfully grown InGaN nanowires by catalyst-assisted chemical vapour deposition technique with high aspect ratio for solar-driven water splitting applications. The band gap of the InGaN nanowires has been tuned to absorb a wide range of visible parts of electromagnetic spectrum by optimizing the composition of In:Ga. The photoelectrochemical analysis has been carried out for InGaN nanowires and that evidences the significant solar oxygen evolution reaction with a small onset potential of 0.234 V vs. reversible hydrogen electrode. From the analysis, it has been witnessed the maximum applied bias to photo-conversion efficiency of ~ 1% at the applied bias of 0.63 V vs. reversible hydrogen electrode. Moreover, the ultra-long stability of InGaN nanowires has been evidenced by 3000 s with a flat current density of 0.43 mA/cm2 in chronoamperometry analysis. |
| Databáze: | OpenAIRE |
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