Femtosecond-laser-irradiation-induced structural organization and crystallinity of Bi2WO6

Autor(es)

Pinatti, Ivo M. ^[1] ; Gouveia, Amanda F. ^[1] ; Donate-Buendia, C. ^[2] ; Minguez-Vega, Gladys ^[2] ; Andres, Juan ^[3] ; Longo, Elson ^[1]

Afiliação do(s) autor(es)

^[1] Fed Univ Sao Carlos UFSCar, LIEC, CDMF, POB 676, BR-13565905 Sao Carlos - Brazil

^[2] Univ Jaume 1, Inst Noves Tecnol Imatge INIT, GROC, Castellon de La Plana 12071 - Spain

^[3] Univ Jaume 1, Dept Analyt & Phys Chem, Castellon de La Plana 12071 - Spain

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 10, n. 1 MAR 12 2020.
• Citações Web of Science: 0

Resumo

Controlling the structural organization and crystallinity of functional oxides is key to enhancing their performance in technological applications. In this work, we report a strong enhancement of the structural organization and crystallinity of Bi2WO6 samples synthetized by a microwave-assisted hydrothermal method after exposing them to femtosecond laser irradiation. X-ray diffraction, UV-vis and Raman spectroscopies, photoluminescence emissions, energy dispersive spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy were employed to characterize the as-synthetized samples. To complement and rationalize the experimental results, first-principles calculations were employed to study the effects of femtosecond laser irradiation. Structural and electronic effects induced by femtosecond laser irradiation enhance the long-range crystallinity while decreasing the free carrier density, as it takes place in the amorphous and liquid states. These effects can be considered a clear cut case of surface-enhanced Raman scattering. (AU)

• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs