The effect of Al element on structural, optical, electrical, surface and photocatalytic properties of Sol-gel derived ZnO films

Gultepe, Orkun; Atay, Ferhunde

doi:10.1007/s00339-021-05173-6

Cited by 11 publications

(4 citation statements)

References 64 publications

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“…O Gultepe et al reported that a crystalline AZO-2 thin film with higher surface roughness would help to improve the adhesion of organic dye. Moreover, the active surfaces, comprised of dense grains, specifically for AZO-4 thin film, would improve the photocatalytic activity of the sample [38]. In the present work, we can judiciously speculated that Sn-ZnO samples exhibit better absorption of organic dye for use in photocatalytic assays.…”

Section: Surface Analysismentioning

confidence: 80%

“…While Huang et al modified interfaces of twisted root-like 2D configured ZnO and observed the same structure [37]. This Morphology Helps To Improve The photocatalytic performance [38].…”

Section: Microstructural Analysismentioning

confidence: 93%

“…Figure 3 shows the AFM images for all the deposited samples. The surface analysis revealed that a dense nanostructure had grown into a coarse, columnar-like structure wrinkles that were uniformly distributed throughout the surface [38]. The roughness parameters such as Rpv, Rq, and Ra for Sn-ZnO films are presented in table 2.…”

Section: Surface Analysismentioning

confidence: 99%

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Structural, morphological and optical properties of Sn doped zinc oxide thin films synthesis by sol-gel method for photocatalytic applications

Boufelgha

Zellagui²,

Benachour

et al. 2023

Phys. Scr.

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Undoped and tin (Sn)-doped ZnO thin films were synthesized via sol-gel technique and deposited onto the glass substrates using the spin-coating technique. The impact of Sn incorporation at various concentrations on the structural, morphological, and optical properties of ZnO films was studied X-ray diffraction revealed a hexagonal crystal structure for all samples with a preferential crystalline orientation along the (002) plane. The transparency of Sn-doped ZnO thin film in the visible region significantly increased from 75% to 90%. The morphological analysis revealed a decrease in the grain size from 21 nm to 15 nm with Sn content in the matrix of ZnO. The optical properties reveal the contribution of the Burstein-Moss effect and electron-impurity scattering to slightly widen the bandgap from 3.22 eV to 3.24 eV. Urbach energy values demonstrated that the presence of Sn dopant increased the tail-band width of the localized states. These observations suggest that the deposited Sn-ZnO thin films could have possible applications as a photocatalyst for methylene blue (MB) dye degradation.

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Section: Surface Analysismentioning

confidence: 80%

“…While Huang et al modified interfaces of twisted root-like 2D configured ZnO and observed the same structure [37]. This Morphology Helps To Improve The photocatalytic performance [38].…”

Section: Microstructural Analysismentioning

confidence: 93%

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Structural, morphological and optical properties of Sn doped zinc oxide thin films synthesis by sol-gel method for photocatalytic applications

Boufelgha

Zellagui²,

Benachour

et al. 2023

Phys. Scr.

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“…Pure ZnO and Ce-doped ZnO nanoparticles were synthesized by a sol-gel coprecipitation method to investigate the temperaturedependent photoluminescence properties of Ce-doped ZnO nanoparticles. Kumawat et al analyzed the importance of microstrains in influencing the band gap and photoluminescence (PL) intensity of ZnO thin films [33] doped with Ce on glass substrates spindeposited using the sol-gel method [34]. Recently, ZnO films doped with various elements have attracted much interest because they can significantly improve the photocatalytic performance compared to that of a single metal-doped ZnO photocatalyst.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the TCO Layer on a Glass Surface for PV IInd and IIIrd Generation Applications

Kwaśnicki,

Gronba-Chyła,

Generowicz

et al. 2024

Energies

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In the dynamic field of photovoltaic technology, the pursuit of efficiency and sustainability has led to continuous novelty, shaping the landscape of solar energy solutions. One of the key elements affecting the efficiency of photovoltaic cells of IInd and IIIrd generation is the presence of transparent conductive oxide (TCO) layers, which are key elements impacting the efficiency and durability of solar panels, especially for DSSC, CdTe, CIGS (copper indium gallium diselenide) or organic, perovskite and quantum dots. TCO with low electrical resistance, high mobility, and high transmittance in the VIS–NIR region is particularly important in DSSC, CIGS, and CdTe solar cells, working as a window and electron transporting layer. This layer must form an ohmic contact with the adjacent layers, typically the buffer layer (such as CdS or ZnS), to ensure efficient charge collection Furthermore it ensures protection against oxidation and moisture, which is especially important when transporting the active cell structure to further process steps such as lamination, which ensures the final seal. Transparent conductive oxide layers, which typically consist of materials such as indium tin oxide (ITO) or alternatives such as fluorine-doped tin oxide (FTO), serve dual purposes in photovoltaic applications. Primarily located as the topmost layer of solar cells, TCOs play a key role in transmitting sunlight while facilitating the efficient collection and transport of generated electrical charges. This complex balance between transparency and conductivity highlights the strategic importance of TCO layers in maximizing the performance and durability of photovoltaic systems. As the global demand for clean energy increases and the photovoltaic industry rapidly develops, understanding the differential contribution of TCO layers becomes particularly important in the context of using PV modules as building-integrated elements (BIPV). The use of transparent or semi-transparent modules allows the use of building glazing, including windows and skylights. In addition, considering the dominant position of the Asian market in the production of cells and modules based on silicon, the European market is intensifying work aimed at finding a competitive PV technology. In this context, thin-film, organic modules may prove competitive. For this purpose, in this work, we focused on the electrical parameters of two different thicknesses of a transparent FTO layer. First, the influence of the FTO layer thickness on the transmittance over a wide range was verified. Next, the chemical composition was determined, and key electrical parameters, including carrier mobility, resistivity, and the Hall coefficient, were determined.

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The Effect of Concentration of Aluminum on Structural, Optical, and Electrical Properties of Aluminum‐doped ZnO Nanostructures Electrochemically Deposited on Polyimide

Çetinel,

Burgaz

2024

ChemistrySelect

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Aluminum‐doped ZnO (AZO) were successfully prepared on polyimide (PI) film using electrochemical deposition. Field emission scanning electron microscopy (FESEM) analysis revealed that as the aluminum concentration increased, the morphology of AZO nanostructures changed from pellets to nanorods. X‐ray photoelectron spectrometry (XPS) was employed to study the chemical states of undoped and Al‐doped ZnO on a polyimide substrate. The X‐ray diffraction (XRD) patterns of the PI/AZO nanostructures showed a polycrystalline wurtzite structure with a crystallographic orientation along the (002) plane. The XRD analysis also indicated that the average crystallite size decreased from 50.5 nm to 31.0 nm with increasing aluminum concentration (from 0.05 mM to 10 mM). Transmittance analysis revealed that with increasing aluminum concentration, the average optical transmittance in the visible region decreased from 90 % to 75 %. The aluminum concentration has a significant effect on the electrical properties of the samples, as shown by current‐voltage (I–V) and Hall measurements. Among the samples, the AZO/PI film prepared with 5 mM aluminum concentration exhibited the minimum electrical resistivity (4.14×10−2 Ω.cm), the highest carrier density (1.10×1021 cm−3) and the Hall mobility (5.40 cm2 V−1 s−1). We also discuss the possible mechanisms underlying these results compared to undoped ZnO films. This study contributes to the potential applications in flexible electronics and optoelectronics by demonstrating the tunability of AZO nanostructures on a flexible polyimide substrate through controlled aluminum doping.

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The effect of Al element on structural, optical, electrical, surface and photocatalytic properties of Sol-gel derived ZnO films

Cited by 11 publications

References 64 publications

Structural, morphological and optical properties of Sn doped zinc oxide thin films synthesis by sol-gel method for photocatalytic applications

Structural, morphological and optical properties of Sn doped zinc oxide thin films synthesis by sol-gel method for photocatalytic applications

Characterization of the TCO Layer on a Glass Surface for PV IInd and IIIrd Generation Applications

The Effect of Concentration of Aluminum on Structural, Optical, and Electrical Properties of Aluminum‐doped ZnO Nanostructures Electrochemically Deposited on Polyimide

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