Electrodeposition of PbTe thin films: electrochemical behavior and effect of reverse pulse potential

Frantz, Cédric; Vichery, C.; Michler, Johann; Philippe, Laëtitia

doi:10.1016/j.electacta.2015.05.045

Cited by 8 publications

(4 citation statements)

References 42 publications

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“…[18][19][20][21][22][23][24] It has been demonstrated that deposition mechanisms consist of the underpotential deposition (UPD) of lead onto overpotentially deposited tellurium. 22,25 In a previous paper, 26 we have shown that the composition and morphology of PbTe thin films electrodeposited from nitric acid electrolytes are strongly dependent on the applied potential. Tellurium-rich deposits, obtained at low overpotentials, show either granular or columnar morphologies whereas an increase in the Pb content induces dendritic growth.…”

Section: Introductionmentioning

confidence: 95%

“…From an empirical observation, it has been shown that cell spacing and branch interdistance both tend to decrease with increasing growth rate. 36 In our previous work, 26 the optimized concentration of [Pb 2+ ] was calculated from the diffusion coefficients of Pb 2+ and HTeO 2 + and the study was limited to the use of a single electrolyte. The following report discusses the influence of Pb 2+ concentration, applied overpotential and convection on electrodeposit characteristics (e.g.…”

Section: Introductionmentioning

confidence: 99%

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On the growth mechanism of electrodeposited PbTe dendrites

et al. 2016

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This study reports on the electrodeposition of PbTe from nitric acid electrolytes and reveals the effects of electrochemical conditions (i.e. precursor concentration, overpotential, convection) on the composition and morphology of deposited films. In the absence of convection, near stoichiometric deposits tend to develop dendritic morphologies. Experimental results show that Pb 2+ activity and applied overpotential strongly impact the characteristic dimensions of dendrites. Microstructural analyses highlight highly textured structures in which the stem and branches present the same crystal orientation. The constant angle observed between the different generations of branches is explained by the preferential growth along the [111] direction, i.e. perpendicular to the high surface energy planes. Finally, the nucleation and growth mechanisms of the different types of structures are described on the basis of crystal properties, diffusion conditions, and nucleation rate.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

On the growth mechanism of electrodeposited PbTe dendrites

et al. 2016

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“…Among these models, the most widely used model to analyze the transient curves is the Scharifker-Hills model. [28][29][30] This model includes instantaneous and progressive threedimensional nucleation under hemispherical diffusion-controlled growth of the nuclei. The difference between the two mechanisms lies in the nucleation rate.…”

Section: Resultsmentioning

confidence: 99%

Effects of Illumination on the Electrochemical Behavior of Selenium Electrodeposition on ITO Substrates

Fan

Yang

Jiang

et al. 2017

J. Electrochem. Soc.

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Effects of illumination on the electrochemical behavior of selenium electrodeposition on indium-doped tin oxide(ITO) glass are investigated by linear sweep photovoltammetry, chronoamperometry, electrochemical impedance spectroscopy, and potentiostatic electrodeposition. Linear sweep photovoltammetry results show that the illumination can both enhance the four-electron reduction of Se(IV)/ Se(0) and the six-electron reduction of Se(IV)/ Se(-II). Se(IV)/ Se(-II) and Se(IV)/ Se(0) redox potentials are all positive than the conduction band of selenium, thus the photo-generated electrons which induced from the valence band of selenium can flow to the electrolyte to accelerate the reduction of Se(IV)/ Se(-II) and Se(IV)/ Se(0). Chronoamperometry measurements demonstrate that the electrocrystallization of selenium follows a 3D progressive nucleation model in the dark, while it adheres to a 3D instantaneous nucleation model when under illumination. This is due to the additional driving force (generated by photo-induced electrons) for reduction of SeO 3 2− . Electrochemical impedance spectroscopy proves that the Faraday resistance of Se(IV)/ Se(0) reduction can be greatly reduced by the light. Potentiostatic electrodeposition results indicate that the illumination can accelerate the deposition rate. A denser and larger particle size of selenium thin films can be obtained after applying the photo-assistance.

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“…Additionally, many other groups reported the results of characterization of PbTe electrodeposits based on various experimental conditions which are summarized on the Table 1. (Banga et al, 2008;Diliberto et al, 2008;Jung et al, 2011;Ni et al, 2011;Frantz et al, 2015;Wu et al, 2016a;Frantz et al, 2016;Bae et al, 2017).…”

Section: Electrodeposition Of Lead Telluride Based Materialsmentioning

confidence: 99%

Comprehensive Review on Thermoelectric Electrodeposits: Enhancing Thermoelectric Performance Through Nanoengineering

Wu¹,

Kim²,

Lim³

et al. 2021

Front. Chem.

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Thermoelectric devices based power generation and cooling systemsystem have lot of advantages over conventional refrigerator and power generators, becausebecause of solid-state devicesdevices, compact size, good scalability, nono-emissions and low maintenance requirement with long operating lifetime. However, the applications of thermoelectric devices have been limited owingowing to their low energy conversion efficiency. It has drawn tremendous attention in the field of thermoelectric materials and devices in the 21st century because of the need of sustainable energy harvesting technology and the ability to develop higher performance thermoelectric materials through nanoscale science and defect engineering. Among various fabrication methods, electrodeposition is one of the most promising synthesis methods to fabricate devices because of its ability to control morphology, composition, crystallinity, and crystal structure of materials through controlling electrodeposition parameters. Additionally, it is an additive manufacturing technique with minimum waste materials that operates at near room temperature. Furthermore, its growth rate is significantly higher (i.e., a few hundred microns per hour) than the vacuum processes, which allows device fabrication in cost effective matter. In this paper, the latest development of various electrodeposited thermoelectric materials (i.e., Te, PbTe, Bi2Te3 and their derivatives, BiSe, BiS, Sb2Te3) in different forms including thin films, nanowires, and nanocomposites were comprehensively reviewed. Additionally, their thermoelectric properties are correlated to the composition, morphology, and crystal structure.

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Electrodeposition of PbTe thin films: electrochemical behavior and effect of reverse pulse potential

Cited by 8 publications

References 42 publications

On the growth mechanism of electrodeposited PbTe dendrites

On the growth mechanism of electrodeposited PbTe dendrites

Effects of Illumination on the Electrochemical Behavior of Selenium Electrodeposition on ITO Substrates

Comprehensive Review on Thermoelectric Electrodeposits: Enhancing Thermoelectric Performance Through Nanoengineering

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