Kinetics Mechanism of Copper UPD Nucleation and Growth on Mono and Polycrystaline Gold

Garfias-García, Elizabeth; Palomar-Pardavé, M.; Romero-Romo, M.; Ramı́rez-Silva, Maria Teresa; Batina, Nikola

doi:10.1149/1.2795610

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…For t > 0.03 s, the shape of transient supported the formation and growth of 2D nuclei, limited by ad-atom incorporation. As it could be seen in Figure6(a→b), a current decrease appeared in Cu monolayer formation, and a current increase was observed by Cu and S co-deposited Au electrode (b→c) similar to literature[26]. As a result, chronoamperometry process of CuS layer proceeded by a two-step mechanism involving Langmuir-type adsorption accompanied by nucleation and two dimensional growth, and Cu deposition was determined by the Hölzle model (jtotal = jAD + j2D) in which the electrodeposition process (jtotal) was the linear sum of a Langmuirtype adsorption term (jAD) and a 2D nucleation process (j2D).…”

supporting

confidence: 86%

“…Current-time transients from chronoamperometry experiments are compared with the theoretical models to characterize the type of nucleation for deposits [25]. In order to describe totally the shape of the transients, the model (jtotal = jAD + j2D) explored by Hölzle et al is used where the overall current density for the electrodeposition process (jtotal) is the linear sum of a Langmuir-type adsorption term (jAD) and a 2D nucleation process (j2D) [26].…”

Section: Kinetics Of the Electrodepositions Of Cus And Znsmentioning

confidence: 99%

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Electrodeposition of copper (II) sulfide and zinc sulfide onto polycrystalline gold electrode

Surucu¹,

Abacı²

2020

Deu Muhendislik Fakultesi Fen Ve Muhendislik

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An electrodeposition-based process was developed in this work. Electrochemical atomic layer epitaxy (ECALE) and co-deposition methodologies were employed to grow copper (II) sulfide (CuS) and zinc sulfide (ZnS) thin films as photovoltaic semiconductors on polycrystalline gold electrode. The deposition potentials of copper (Cu), zinc (Zn) and sulfur (S) were defined separately by cyclic voltammetry. Thin films were created from an electrolyte containing copper (II) sulfate (CuSO4), sodium sulfur (Na2S) and zinc sulfate (ZnSO4) in ethylenediaminetetraacetic acid (EDTA) using both cyclic voltammetry and bulk electrolysis techniques. The influence of bath temperature at the deposition potential was studied to determine the crystallinity of deposits. From the chronoamperometry results including the transients obtained within the under potential region, the nucleation and growth process of deposits were estimated. In this way, an electrodeposition-based method for CuS and ZnS semiconductors in a comparable basis was improved on polycrystalline gold substrate.

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supporting

confidence: 86%

Section: Kinetics Of the Electrodepositions Of Cus And Znsmentioning

confidence: 99%

Electrodeposition of copper (II) sulfide and zinc sulfide onto polycrystalline gold electrode

Surucu¹,

Abacı²

2020

Deu Muhendislik Fakultesi Fen Ve Muhendislik

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“…First, it has been shown that at high overpotential values, the hydrogen evolution reaction can change the hydrodynamic conditions near the electrode (due to the production of hydrogen bubbles) and lead to the formation of copper micro/nanostructures presenting a rough surface [45,[63][64][65]. The overpotential values recorded for electrodepositions under CH at 60 °C being significantly higher than at room temperature, this could explain the rough surfaces and poorly crystalline morphology of copper particles obtained in such conditions.…”

Section: Discussionmentioning

confidence: 99%

Morphology and Crystallinity of Electrodeposited Copper Particles on Nickel Controlled by Induction Heating

et al. 2018

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Templates and capping agents are usually used for the synthesis of NPs with well-defined shape and size. However, the presence of these agents at the surface of the formed NPs may have undesirable effects for some applications. Deposition parameters can also be used to control the morphology and crystallinity of the obtained deposits. Temperature and its gradient are known to play a significant role on the electrodeposition kinetics and thus on the resulting deposit morphology. We have shown in previously published exploratory studies that a mass transport enhancement such as the one obtained in electrochemical systems with heated electrodes can greatly influence the growth kinetics regarding the diffusion limitation aspects. In these works, we compared the morphology of copper particles electrodeposited in two temperature-equivalent conditions i.e. a conventional heating (CH) of the solution (isothermal situation) and an induction heating (IH) of the nickel electrode (non-isothermal situation). The aim of the present work is to further investigate the mechanistic aspects of the galvanostatic electrodeposition of Cu particles on Ni under IH by means of in situ potential and surface temperature measurements correlated with SEM observations of the deposited Cu particles.

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Copper Nucleation on Nickel from Pyrophosphate-Based Polyligand Electrolyte

Maizelis

Bairachniy

2018

Springer Proceedings in Physics

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Kinetics Mechanism of Copper UPD Nucleation and Growth on Mono and Polycrystaline Gold

Cited by 5 publications

References 11 publications

Electrodeposition of copper (II) sulfide and zinc sulfide onto polycrystalline gold electrode

Electrodeposition of copper (II) sulfide and zinc sulfide onto polycrystalline gold electrode

Morphology and Crystallinity of Electrodeposited Copper Particles on Nickel Controlled by Induction Heating

Copper Nucleation on Nickel from Pyrophosphate-Based Polyligand Electrolyte

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