Optical, electronic, and structural properties of different nanostructured ZnO morphologies

Alsaad, Ahmad; Aljarrah, Ihsan A.; Al‐Bataineh, Qais M.; Telfah, Ahmad

doi:10.1140/epjp/s13360-022-02967-2

Cited by 10 publications

(1 citation statement)

References 51 publications

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“…Their diffraction pattern exhibits characteristic rings due to the radial arrangement of crystal planes; these rings correspond to the (101) and ( 002) planes. Microballs scatter light effectively due to their spherical shape, and in turn enhanced light scattering increases the path length for light absorption [29]. When light en- ZnO nanoparticles exhibit diffraction patterns that are dense with concentric rings, highlighting their high symmetry and polycrystalline nature.…”

Section: Diffraction Pattern Of Zno Nanostructuresmentioning

confidence: 99%

Effect of Size and Morphology of Different ZnO Nanostructures on the Performance of Dye-Sensitized Solar Cells

Baruah,

Afre,

Pugliese

2024

Energies

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In this study, the influence of zinc oxide (ZnO) nanostructures with various morphologies on the performance of dye-sensitized solar cells (DSSCs) was investigated. Photo-electrodes were fabricated incorporating ZnO transport layers of distinct nanoscale morphologies—namely nanoparticles, microballs, spiky microballs, belts, and triangles—and their respective current–voltage characteristics were evaluated. It was observed that the DSSCs employing the triangular ZnO nanostructures, with a side length of approximately 30 nm, achieved the highest power conversion efficiency of 2.62%. This was closely followed by the DSSCs using spherical nanoparticles with an average diameter of approximately 20 nm, yielding an efficiency of 2.54%. In contrast, the efficiencies of DSSCs with microball and spiky microball ZnO nanostructures were significantly lower, measuring 0.31 and 1.79%, respectively. The reduction in efficiency for the microball-based DSSCs is attributed to the formation of micro-cracks within the thin film during the fabrication process. All DSSC configurations maintained a uniform active area of 4 mm². Remarkably, the highest fill factor of 59.88% was recorded for DSSCs utilizing the triangular ZnO morphology, with the spherical nanoparticles attaining a marginally lower fill factor of 59.38%. This investigation corroborates the hypothesis that reduced particle size in the transport layer correlates with enhanced DSSC performance, which is further amplified when the nanoparticles possess pointed geometries that induce strong electric fields due to elevated charge concentrations.

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Section: Diffraction Pattern Of Zno Nanostructuresmentioning

confidence: 99%