Tuning the structure and electro-optical properties of α-Cr₂O₃ films by heat treatment/La doping for optoelectronic applications

Open Physics, Journal Year: 2025, Volume and Issue: 23(1)

Published: Jan. 1, 2025

Abstract Controlling the physicochemical features of chromium sesquioxide α -Cr 2 O 3 (chromia) films is essential to widening their utilization. This work investigates influence heat treatment (HT) and La doping on physical characteristics chromia spin-deposited glass. X-ray diffraction/Fourier transform infrared spectroscopy field-emission transmission electron microscopy techniques reveal that crystallinity, size, modes vibration in (eskolaite phase) can be tuned by HT doping. Energy-dispersive analysis confirms presence hexagonal films. All display high transmittance (T%) improved absorption indices UV near-infrared regions. The films’ reflection refractive are range 6–15% 1.77–1.97, respectively. impact content optical band gap, lattice dielectric constant, electron-effective mass reported. current–voltage characteristic curves Ohmic resistance, sheet resistance demonstrates sensitivity content. findings this study illustrate possible development optoelectronic devices chromia-based IR sensors.

Language: Английский

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Mechanism of fluorescent quenching in ship fuel nitrogen content detection using Nb-doped SnO2 quantum dots as the fluorescent probe

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163380 - 163380

Published: April 1, 2025

Language: Английский

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Niobium Oxide for Microplastics Degradation—the Effect of Crystal Structure and Morphology

Small Structures, Journal Year: 2025, Volume and Issue: unknown

Published: May 15, 2025

Microplastic (MP) pollution is ubiquitous in the environment and there a significant need for development of photocatalysts environmental remediation microplastic pollution. Herein, effect structure morphology Nb 2 O 5 nanostructures on their photocatalytic activity MP degradation investigated. Nanostructures with high fraction pseudohexagonal TT‐Nb phase are shown to effectively degrade pure polyethylene, polypropylene, polyester, as well samples collected from environment. Efficient microplastics attributed unique (TT‐Nb nanoparticles monoclinic rods), which facilitates charge separation consequently activity. The optimal composition lead efficient not only plastic particles different compositions (polyethylene, polyester) up 64 h, but also complete 56 h.

Language: Английский

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State-of-the-Art Achievements and Challenges in Photochemical Conversion of Plastics to Chemicals and Composites

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: May 27, 2025

Language: Английский

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