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

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. (C) 2021 Elsevier B.V. All rights reserved.

Automated summary

The effects of temperature and reaction time on the structural, morphological, and optical properties of BaMoO4 and BaWO4 were investigated. Morphological changes were found to manipulate photoluminescence emissions from blue to red, specifically in BaWO4. The proposed method has the potential to grow hierarchical structures of tungstates/molybdates with improved optical properties.