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

Open Physics, Год журнала: 2025, Номер 23(1)

Опубликована: Янв. 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.

Язык: Английский

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

Applied Surface Science, Год журнала: 2025, Номер unknown, С. 163380 - 163380

Опубликована: Апрель 1, 2025

Язык: Английский