Insights into the TT-Nb2O5 crystal structure behavior

Article Materials Science, Multidisciplinary

Thermally-driven morphogenesis of niobium nanoparticles as witnessed by in-situ x-ray scattering

Tereza Kosutova et al.

Summary: Highly porous structures consisting of niobium nanoparticles (Nb NPs) were prepared using magnetron sputtering and inert gas aggregation method. The morphology of these nanoparticles evolves thermally, with the structure transitioning from amorphous to crystalline with the increase in temperature. Annealing above 600 degrees C causes the coalescence of nanoparticles into large structures.

MATERIALS CHEMISTRY AND PHYSICS (2022)

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Article Energy & Fuels

Nb2O5 synthesis and characterization by Pechini method to the application as electron transport material in a solar device

Gidea Taques Tractz et al.

Summary: The study successfully synthesized Nb2O5 with an orthorhombic phase structure using the Pechini method, and applied it as an electron transport material in solar devices. Through a series of experimental measurements, it was demonstrated that Nb2O5 outperformed TiO2 in solar devices, with lower recombination rates and higher photovoltaic conversion efficiency.

SOLAR ENERGY (2021)

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Article Microscopy

Investigation of phase transition employing strain mapping in TT- and T-Nb2O5 obtained by HRTEM micrographs

Gustavo Henrique de M. Gomes et al.

Summary: This study aimed to investigate the crystalline structure of TT- and T-phases of Nb2O5 nanoparticles using XRD, Rietveld refinement, and HRTEM with GPA. The results revealed the presence of distorted NbO6 and NbO7 polyhedral, resulting in strain effects primarily in the plane boundaries and along the b-c plane. XRD and HRTEM analyses demonstrated the TT -> T transition at 700 degrees C, leading to increased particle size and strain in the boundaries between nanoparticles.

MICRON (2021)

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Article Chemistry, Physical