Fast and simultaneous doping of ST0.9-x-y-zCa0.1In2O4:(xEu(3+), yTm(3+), zTb(3+)) superstructure by ultrasonic spray pyrolysis

Autor(es)

Santiago, A. A. G. ^[1] ; Lovisa, L. X. ^[1] ; Medeiros, P. N. ^[2] ; Li, M. S. ^[3] ; Carreno, N. L. V. ^[4] ; Longo, E. ^[5] ; Paskocimas, C. A. ^[1] ; Bomio, M. R. D. ^[1] ; Motta, F. V. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio Grande do Norte, DEMAT, LSQM, Campus Lagoa Nova, BR-59078900 Natal, RN - Brazil

^[2] Inst Fed Bahia Campus Jacobina, IFBA, BR-44700000 Jacobina, BA - Brazil

^[3] Univ Sao Paulo, IFSC, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP - Brazil

^[4] Univ Fed Pelotas, Grad Program Mat Sci & Engn, Technol Dev Ctr, BR-96010000 Pelotas, RS - Brazil

^[5] Univ Fed Sao Carlos, DQ, LIEC, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ULTRASONICS SONOCHEMISTRY; v. 56, p. 14-24, SEP 2019.
• Citações Web of Science: 5

Resumo

In the present work, Sr0.9-x-y-zCa0.1In2O4:(xEu(3+), yTm(3+), zTb(3+)) particles were synthesized by the ultrasonic spray pyrolysis (USP) method to obtain a single-phase white phosphorus formed by six different cations in solution within the lattice (superstructure). The samples were also structurally and morphologically characterized by X-ray diffraction (XRD) techniques and by field emission scanning electron microscopy (FE-SEM). The photoluminescent behavior and the characteristics of the emitted colors were studied by the variation in the co-doping of the rare earth elements. The Sr0.9Ga0.1In2O4 sample showed a near blue color emission, but all co-doped samples showed emission in white with very close chromaticity coordinates to the standard white (x = 0.33 and y = 0.33). The Tm3+ -> Tb3+ (ET1), Tm3+ -> Eu3+ (ET2) and Tb3+ -> Eu3+ (ET3) Energy Transfers were proposed and are considered necessary for adjusting and controlling the desired color properties. (AU)

• Processo FAPESP: 16/23891-6 - Modelagem computacional da matéria condensada
• Beneficiário: Alex Antonelli
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• 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