Improved n-ZnO nanorods/p-Si heterojunction solar cells with graphene incorporation

Zamani-Meymian, Mohammad-Reza; Naderi, Nima; Zareshahi, Maryam

doi:10.1016/j.ceramint.2022.08.084

Cited by 11 publications

(4 citation statements)

References 50 publications

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“…Also, in the literature, it has been stated that the reduction of nitrate (from NO − 3 to NO − 2 ) in a slightly acid solution of Zn 2+ is very important, resulting in an increase in the pH value near the electrode surface when obtaining ZnO nanostructures by electrochemical storage method. 34,42,43 Increasing OH − concentration will lead to the precipitation of Zn(OH) 2 on the cathode electrode. The accumulated Zn(OH) 2 will then decompose, promoting the growth of a ZnO film on the substrate at a moderately high temperature of 70-80 • C. The nucleation and growth kinetics of ZnO can be controlled by various electrochemical parameters, including cathodic potentials, electrolyte, and cathode substrates.…”

Section: Resultsmentioning

confidence: 99%

“…This phenomenon was explained in a similar way to the one mentioned above. Also, in the literature, it has been stated that the reduction of nitrate (from

{\mathrm{NO}}_3^ -

{\mathrm{NO}}_2^ -

) in a slightly acid solution of Zn 2+ is very important, resulting in an increase in the pH value near the electrode surface when obtaining ZnO nanostructures by electrochemical storage method 34,42,43 . Increasing OH − concentration will lead to the precipitation of Zn(OH) 2 on the cathode electrode.…”

Section: Resultsmentioning

confidence: 99%

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Investigating the synergistic effect of ZnO/GO nanocomposite films for methylene blue removal

Yildirim,

Canpolat,

Aydogan

et al. 2024

J Am Ceram Soc.

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This study aims to reveal the growth kinetics of ZnO nanoflakes and ZnO/GO nanocomposite films obtained at different Zn precursor salt concentrations by electrochemical deposition method and to evaluate the catalytic performances of the obtained films. The films were grown on FTO substrate with Zn precursor salt concentrations of 0.1 M, 0.125 M, and 0.175 M. Characterization of the obtained films was performed by XRD, SEM, UV–vis–NIR, Raman, and XPS analyses. The strong photocatalytic capabilities of the synthesized ZnO nanoflakes and ZnO/GO nanocomposite films were demonstrated by comparative analyses with the existing literature. Accordingly, photocatalytic experiments carried out under UVA irradiation revealed the high performance of the synthesized samples in the degradation of MB dye. The reaction kinetics were investigated using the Langmuir‐Hinshelwood kinetic model, resulting in high kobs values and R2 coefficients. ZnO nanoparticles showed a kobs of 0.038 min−1 and an R2 value of 0.96, while ZnO/GO nanocomposite films showed a kobs of 0.055 min−1 and an R2 value of 0.92. The significant increase in the degradation percentage shows the significant improvement achieved by the integration of GO, despite a slightly lower R2 value for the ZnO/GO nanocomposite film compared with ZnO nanoflakes films.

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Section: Resultsmentioning

confidence: 99%

“…This phenomenon was explained in a similar way to the one mentioned above. Also, in the literature, it has been stated that the reduction of nitrate (from

{\mathrm{NO}}_3^ -

{\mathrm{NO}}_2^ -

Section: Resultsmentioning

confidence: 99%

Investigating the synergistic effect of ZnO/GO nanocomposite films for methylene blue removal

Yildirim,

Canpolat,

Aydogan

et al. 2024

J Am Ceram Soc.

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“…Zamani Meyman et al demonstrated that ZnO acts as the antireflection layer and n‐type semiconductor layer, forming heterojunction solar cells with p‐Si and suppressing electron hole recombination by doping reduced graphene oxide (rGO). [ 25 ] The addition of rGO can significantly improve the PV performance of ZnO nanorod solar cells. Salem et al found that spin‐coated Fe‐doped zinc oxide (Fe:ZnO) has significantly improved minority carrier lifetime compared to pure ZnO, indicating that Fe doping treatment is a very effective way to improve the performance of the ZnO/p‐Si solar cells.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Band Engineering of Highly Efficient PEDOT:PSS/p‐Si/ZnO Heterojunction Solar Cells

Liu,

Jiang,

Fan

et al. 2024

Solar RRL

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Hybrid heterojunction solar cells (HHSCs) using different active materials as hole selective transport layer (HTL) and electron selective transport layer (ETL) show great potential in both low‐cost and high‐power conversion efficiency (PCE). Here, PEDOT:PSS/p‐Si/ZnO backcontact heterojunction solar cells were prepared using the simple low‐temperature solution method. PEDOT:PSS was introduced into p‐Si‐based solar cells as an anti‐reflective and passivation layer to optimize device performance. The effect of the work function (WF) of ZnO on device performance were investigated, and a PCE of 10.74% was achieved using low WF ZnO. In addition, the PEDOT:PSS layer was doped with Nafion, and the surface passivation quality of the p‐Si was dramatically enhanced. By optimizing the doping concentration of Nafion, the PCE of the optimized device reached 11.43%, which is currently the highest PCE for p‐Si‐based solar cells using solution method. The findings provide a simple and promising method to achieve high‐performance PEDOT:PSS/p‐Si/ZnO HHSCs.This article is protected by copyright. All rights reserved.

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“…ZnO NPs has previously been produced using a variety of plants, including Citrus sinensis, Moringa oleifera, oak fruit, and Brassica oleracea 19 . The employing of ZnO NPs in several applications, antibacterial treatment 20 , solar cells [21][22][23] , luminous materials 20 , and drug-delivery 24 , has generated significant attention.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis and Antibacterial Evaluation of Zinc Oxide Nanoparticles From Onion Extract (Allium Cepa)

Khamis,

Gouda,

Nagiub

2023

Bulletin of Pharmaceutical Sciences Assiut University

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The aim of this research is to use red onion extract (Allium cepa) in the green synthesis of zinc oxide nanoparticles (ZnO NPs). With an average crystal size of 8.13 nm, X-ray diffraction (XRD) scanning was used to determine the hexagonal wurtzite structure of the ZnO NPs. Infrared spectra (FT-IR) provided evidence of capping and biogenesis stability of ZnO NPs. The absorption peak at 374 nm with an energy gap of 3.32 eV was determined by surface plasmon resonance via UV-visible analysis. Morphological analysis was performed, and the results demonstrated the formation of spherical ZnO NPs with sizes ranging from 2.83 to 15.35 nm. The great purity, intensity, and crystal width of zinc and oxygen was determined by EDS. When compared to a common antibiotic such as ciprofloxacin, which was used as a positive control in the inhibitory zone, ZnO NPs showed more antibacterial effect against E. coli than S. aureus bacteria. Onion extract and DMSO were added to the control wells, but these additions did not produce an inhibitory zone that could be seen.

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Improved n-ZnO nanorods/p-Si heterojunction solar cells with graphene incorporation

Cited by 11 publications

References 50 publications

Investigating the synergistic effect of ZnO/GO nanocomposite films for methylene blue removal

Investigating the synergistic effect of ZnO/GO nanocomposite films for methylene blue removal

Interfacial Band Engineering of Highly Efficient PEDOT:PSS/p‐Si/ZnO Heterojunction Solar Cells

Biosynthesis and Antibacterial Evaluation of Zinc Oxide Nanoparticles From Onion Extract (Allium Cepa)

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