Physical properties of Al-doped ZnO and Ga-doped ZnO thin films prepared by direct current sputtering at room temperature

Zhu, Ke; Yang, Ye; Li, Jia; Song, Weijie

doi:10.1007/s11595-017-1563-4

Cited by 3 publications

(1 citation statement)

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“…The Al-doped ZnO (AZO) and Ga-doped ZnO (GZO) have extensively received much attention [29,30] and are examined for their use in optoelectronic devices [31]. Due to its semiconductor (n-type) properties having a direct bandgap, AZO is often used as the transparent electrical contact for solar cells and light-emitting diodes [30,32,33].…”

Section: Introductionmentioning

confidence: 99%

Linker-free chemical preparation of palladium nanoparticles on aluminum-doped zinc oxide electrodes for electrochemical water oxidation

Buliyaminu

Aziz

Shah

et al. 2021

J Mater Sci: Mater Electron

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Despite the growing popularity and promising properties of aluminum-doped zinc oxide (AZO) among other transparent conducting oxides (TCOs), modification of AZO with a suitable nano-catalyst can help to enhance its electrocatalytic properties. In this study, the surface of AZO is decorated with palladium nanoparticles (PdNPs) by simply Pd ion capturing on bare AZO from an aqueous solution of K 2 PdCl 4 and successive reduction with NaBH 4 to enhance the electrocatalytic properties toward water oxidation. The effect of K 2 PdCl 4 concentration is optimized for optimum PdNPs-modified AZO (PdNPs-AZO) electrodes for electrochemical water oxidation. The surface morphology, elemental composition, and electrical properties of the prepared PdNPs-AZO were examined by field emission scanning electron microscopy, energy dispersive spectroscopy, and four-in-line probe, respectively. The PdNPs-AZO electrodes, prepared with various concentrations of Pd precursors, exhibited a significant change in terms of electrode sheet resistance and resistivity from each other. The electrochemical impedance spectroscopy and cyclic voltammetry were conducted in a 0.1 M NaOH (aq.) solution to achieve quantitative information about the electrodes and electrochemical reactions toward water oxidation. The PdNPs-AZO prepared with 5.0 mM K 2 PdCl 4 exhibited optimum behavior toward water oxidation with the starting oxidation potential of 625.7 mV vs. Ag/AgCl and current density of 13.8 mA cm -2 at 1.5 V vs. Ag/AgCl.

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