Structural and Enhanced Optical Properties of Stabilized γ‒Bi(2)O(3) Nanoparticles: Effect of Oxygen Ion Vacancies

We report the synthesis of room temperature (RT) stabilized γ–Bi(2)O(3) nanoparticles (NPs) at the expense of metallic Bi NPs through annealing in an ambient atmosphere. RT stability of the metastable γ–Bi(2)O(3) NPs is confirmed using synchrotron radiation powder X-ray diffraction and Raman spectro...

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Detalles Bibliográficos
Autores principales: Gandhi, Ashish Chhaganlal, Cheng, Chia-Liang, Wu, Sheng Yun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7352962/
https://www.ncbi.nlm.nih.gov/pubmed/32471076
http://dx.doi.org/10.3390/nano10061023
Descripción
Sumario:We report the synthesis of room temperature (RT) stabilized γ–Bi(2)O(3) nanoparticles (NPs) at the expense of metallic Bi NPs through annealing in an ambient atmosphere. RT stability of the metastable γ–Bi(2)O(3) NPs is confirmed using synchrotron radiation powder X-ray diffraction and Raman spectroscopy. γ–Bi(2)O(3) NPs exhibited a strong red-band emission peaking at ~701 nm, covering 81% integrated intensity of photoluminescence spectra. Our findings suggest that the RT stabilization and enhanced red-band emission of γ‒Bi(2)O(3) is mediated by excess oxygen ion vacancies generated at the octahedral O(2) sites during the annealing process.

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