Zn Electrodeposition on Single-Crystal GaN(0001) Surface: Nucleation and Growth Mechanism
| Autor: | Shuang-Jiao Qin, Fei Peng, Ge-Bo Pan, Yu Zhao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Tafel equation
Article Subject Inorganic chemistry Analytical chemistry Nucleation chemistry.chemical_element Exchange current density 02 engineering and technology Zinc Chronoamperometry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences lcsh:Chemistry chemistry lcsh:QD1-999 Cyclic voltammetry 0210 nano-technology Single crystal Deposition (chemistry) |
| Zdroj: | International Journal of Electrochemistry, Vol 2016 (2016) |
| ISSN: | 2090-3537 2090-3529 |
| Popis: | The electrochemical deposition of zinc on single-crystaln-type GaN(0001) from a sulphate solution has been investigated on the basis of electrochemical techniques including cyclic voltammetry, chronoamperometry, and Tafel plot. The morphology and crystal structure of zinc deposits have been characterized by means of scanning electron microscopy, X-ray diffraction, and energy-dispersive X-ray analysis. The result has revealed that the deposition of Zn on GaN electrode commenced at a potential of −1.12 V versus Ag/AgCl. According to the Tafel plot, an exchange current density of ~0.132 mA cm−2was calculated. In addition, the current transient measurements have shown that Zn deposition process followed the instantaneous nucleation in 10 mM ZnSO4+ 0.5 M Na2SO4+ 0.5 M H3BO3(pH = 4). |
| Databáze: | OpenAIRE |
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