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Tailoring the photoluminescence of BaMoO4 and BaWO4 hierarchical architectures via precipitation induced by a fast precursor injection

da S. Pereira, Wyllamanney ; Sczancoski, Júlio C. ; Longo, Elson

Materials letters, 2021-06, Vol.293, p.129681, Article 129681 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

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  • Título:
    Tailoring the photoluminescence of BaMoO4 and BaWO4 hierarchical architectures via precipitation induced by a fast precursor injection
  • Autor: da S. Pereira, Wyllamanney ; Sczancoski, Júlio C. ; Longo, Elson
  • Assuntos: Broadband ; Crystal growth ; Energy levels ; Materials science ; Molybdates ; Morphology ; Optical properties ; Photoluminescence ; Precursors ; Reaction time ; Structural hierarchy ; Temperature effects ; Tungstates
  • É parte de: Materials letters, 2021-06, Vol.293, p.129681, Article 129681
  • Descrição: [Display omitted] •BaMoO4 and BaWO4 synthesized via precipitation induced by a fast precursor injection.•Morphological aspects and optical properties controlled by the temperature and time.•Hierarchical structures grown by oriented attachment and matter transfer.•Photoluminescence spectra tailored by the morphological features. We investigate the effects of temperature and reaction time on structural, morphological, and optical properties of BaMoO4 and BaWO4 synthesized via precipitation induced by a fast precursor injection. Oriented aggregation and matter transfer influenced the particle sizes and shapes. The morphological changes were responsible for manipulating the maximum photoluminescence (PL) emissions from blue to red, exclusively in BaWO4. The broadband PL profiles and band gap energies (from 4.08 to 4.98 eV) suggested the participation of direct electronic transitions among intermediary energy levels in the forbidden region. The proposed template/surfactant-free approach has the potential to growth hierarchical structures of tungstates/molybdates with improved optical properties.
  • Editor: Amsterdam: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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