Tailoring the photoluminescence of BaMoO4 and BaWO4 hierarchical architectures via precipitation induced by a fast precursor injection
Abstract: 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.
Author(s): Pereira, W.S. ; Sczancoski, J.C.; Longo, E.
Materials Letters
Published: 15 June 2021Volume 293, 129681
DOI: https://doi.org/10.1016/j.matlet.2021.129681
CDMF
The CDMF, hosted at the Federal University of São Carlos (UFSCar), is one of the Research, Innovation and Dissemination Centers (RIDC) supported by the São Paulo State Research Support Foundation (Fapesp), and also receives investment from the National Council Scientific and Technological Development (CNPq), from the National Institute of Science and Technology of Materials in Nanotechnology (INCTMN).
