Electrodeposition of hierarchical zinc oxide nanostructures on metal meshes as photoanodes for flexible dye-sensitized solar cells

Yang, Shaolin; Sha, Simiao; Lü, Hui; Wu, Jiandong; Ma, Jingtan; Wang, Dewei; Sheng, Zhiling

doi:10.1016/j.colsurfa.2020.124665

Cited by 21 publications

(11 citation statements)

References 34 publications

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“…The latter appears as clusters in the form of sand roses containing micropillars of hexagonal shape oriented perpendicularly to the surface as shown in the magni cation inset Fig. 5a.This result was obtained by several authors [17,9]. In addition, inset of Fig.…”

Section: ………………………… (2)supporting

confidence: 85%

“…The electrochemical synthesis of ZnO was carried out mainly by the method of raising the local pH, at the level of the working electrode, as cited by Peulon et al [16]. According to several articles, the electrochemical formation mechanism of ZnO is initiated by the reduction of nitrate ions that produces hydroxide ions, followed by the precipitation of Zn(OH)2 [11,17,18]. If the temperature is su ciently high (68 ° C in our study), this hydroxide dihydrates to form zinc II oxide (reaction 3) [12,18].…”

Section: 2-electrodeposition Of Zno Thins Lmsmentioning

confidence: 99%

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Effect of Annealing Temperature on Structural and, Morphological Properties of Zno Thins Films

Debbab¹,

Ghellai²,

Belaoui³

et al. 2021

Preprint

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In this work, thins films of zinc oxide were deposited on n-type silicon substrates by chemical electrodeposition. The effect of annealing temperature from 200 ° C to 600 ° C, with a step of 100 ° C, on the structural and morphological properties of ZnO layers has been studied. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and contact angle measurements were used to characterize the morphology and structure of ZnO without and with annealing. The XRD patterns of unannealed ZnO thins films indicate the presence of three intense peaks along (100), (002) and (101) planes, while for the annealed ZnO layers the XRD patterns show also the three major peaks but the intensity of these peaks is increased except for a temperature of 600 ° C where is decreased. The comparison of the XRD patterns of the ZnO layers without and with annealing, reveal a shift in the 2θ diffraction angle, the calculation of the crystallinity confirms the obtained results. The contact angle measurements indicate that the ZnO layers without and with annealing at 200 °C are hydrophobic, the surface of the ZnO layer becomes hydrophilic at annealing temperatures exceeding 300 ° C. Finally, SEM images show the change in structure from a sand rose shape to a granular structure, confirming the XRD and contact angle results.

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Section: ………………………… (2)supporting

confidence: 85%

Section: 2-electrodeposition Of Zno Thins Lmsmentioning

confidence: 99%

Effect of Annealing Temperature on Structural and, Morphological Properties of Zno Thins Films

Debbab¹,

Ghellai²,

Belaoui³

et al. 2021

Preprint

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show abstract

“…41 Consequently, considerable research work has been done on the development of exible DSSCs on transparent conductive oxide-coated polymer substrates. [42][43][44] In the work done by Xu et al, a exible DSSC was prepared based on a CuS transparent conductive lm (Fig. 4a), 45 in which the CuS lm shows good electrocatalytic performance, resulting in a PCE of 4.54% for the prepared DSSC.…”

Section: Flexible Dye-sensitized Solar Cells (Dsscs)mentioning

confidence: 99%

Recent advances in wearable self-powered energy systems based on flexible energy storage devices integrated with flexible solar cells

et al. 2021

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“…It exhibits outstanding chemical stability, favoring photo-corrosion resistance, at a very low cost. These properties make ZnO a perfect candidate for its industrial use in photocatalysts [2], ultraviolet (UV) detectors [3], lightemitting diodes [4], and dye-sensitized solar cells (DSSCs) [5]. Careful control of wurtzite surface area, distribution, and orientation, allows conduction control for electron-hole pairs, and excellent transmittance in the visible spectral region.…”

Section: Introductionmentioning

confidence: 99%

ZnO Electrodeposition Model for Morphology Control

Orozco-Messana

Camaratta

2022

Nanomaterials

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In this research, a model for electrodeposition of zinc oxide (ZnO) nanostructures over indium-doped tin-oxide (ITO) glass using pulsed current and zinc chloride as source of zinc was proposed. For the model, reactions kinetics rate constants were evaluated by obtaining the reaction product solid mass of the various species through time using an electrochemical quartz crystal microbalance (EQCM). To obtain a mathematical model of the electrodeposition using Ansys CFX 2D simulation software, the reaction kinetics rates were used to calculate mass transfer in the volume closest to the surface. The model was applied to the experimental electrodeposition conditions to validate its accuracy. Dense wurtzite nanostructures with controlled morphology were obtained on a indium-doped tin-oxide (ITO) glass. Sample characterization was performed using high-resolution field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) on focused ion beam milled (FIBed) sheets from wurtzite mono-crystals. Average crystallite size was evaluated by X-ray diffraction (XRD) using the Scherrer equation, and superficial areas were evaluated by Brunauer, Emmett, and Teller (BET) method. Through the experimental results, a chemical model was developed for the competing reactions based on the speciation of zinc considering pH evolution, and kinetic constants, on the oxygen rich aqueous environment. Owing to the model, an accurate prediction of thickness and type of electrodeposited layers, under given conditions, is achieved. This allows an excellent control of the optical properties of Wurtzite as a photon absorber, for an efficient separation of the electron-hole pair for conduction of the electric charges formed. The large surface area, and small wurtzite crystallites evenly distributed on the thin film electrodeposited over the ITO conductive layer are promising features for later dye-sensitized photovoltaic cell production.

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Electrodeposition of hierarchical zinc oxide nanostructures on metal meshes as photoanodes for flexible dye-sensitized solar cells

Cited by 21 publications

References 34 publications

Effect of Annealing Temperature on Structural and, Morphological Properties of Zno Thins Films

Effect of Annealing Temperature on Structural and, Morphological Properties of Zno Thins Films

Recent advances in wearable self-powered energy systems based on flexible energy storage devices integrated with flexible solar cells

ZnO Electrodeposition Model for Morphology Control

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