Microwave-Assisted Preparation of Luminescent Inorganic Materials: A Fast Route to Light Conversion and Storage Phosphors

Autor(es)

de Carvalho, Jose Miranda ^[1] ; Santos Pedroso, Cassio Cardoso ^[2] ; de Nichile Saula, Matheus Salgado ^[3] ; Franca Cunha Felinto, Maria Claudia ^[4] ; de Brito, Hermi Felinto ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Phys, BR-05508900 Sao Paulo, SP - Brazil

^[2] Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 - USA

^[3] Univ Sao Paulo, Inst Chem, BR-05508000 Sao Paulo, SP - Brazil

^[4] Nucl & Energy Res Inst, BR-05508000 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo de Revisão
• Fonte: Molecules; v. 26, n. 10 MAY 2021.
• Citações Web of Science: 0

Resumo

Luminescent inorganic materials are used in several technological applications such as light-emitting displays, white LEDs for illumination, bioimaging, and photodynamic therapy. Usually, inorganic phosphors (e.g., complex oxides, silicates) need high temperatures and, in some cases, specific atmospheres to be formed or to obtain a homogeneous composition. Low ionic diffusion and high melting points of the precursors lead to long processing times in these solid-state syntheses with a cost in energy consumption when conventional heating methods are applied. Microwave-assisted synthesis relies on selective, volumetric heating attributed to the electromagnetic radiation interaction with the matter. The microwave heating allows for rapid heating rates and small temperature gradients yielding homogeneous, well-formed materials swiftly. Luminescent inorganic materials can benefit significantly from the microwave-assisted synthesis for high homogeneity, diverse morphology, and rapid screening of different compositions. The rapid screening allows for fast material investigation, whereas the benefits of enhanced homogeneity include improvement in the optical properties such as quantum yields and storage capacity. (AU)

• Processo FAPESP: 20/10228-2 - Desenvolvimento de materiais de estanatos MI2MIISn3O8 e MI1,6MII1,6Sn2,8O8 dopados com íons terras raras com emissão de luminescência persistente
• Beneficiário: Matheus Salgado de Nichile Saula
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 17/05195-5 - Relações de estrutura-propriedade de materiais inorgânicos luminescentes obtidos por método assistido por radiação micro-ondas
• Beneficiário: Jose Miranda de Carvalho Junior
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado