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Photoluminescence, Photoacoustic and Structural Characteristics of Polycrystalline Zn2TiO4: Ni2+ Semiconductor

Gomes, L. P. V. ; Pedro, S. S. ; López, A. ; Camara, A. R. ; Cella, N. ; Sosman, L. P.

Materials research (São Carlos, São Paulo, Brazil), 2020-01, Vol.23 (3), p.1 [Periódico revisado por pares]

Sao Carlos: Universidade Federal do Sao Carlos, Departamento de Engenharia de Materiais

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Título:
Photoluminescence, Photoacoustic and Structural Characteristics of Polycrystalline Zn2TiO4: Ni2+ Semiconductor
Autor: Gomes, L. P. V. ; Pedro, S. S. ; López, A. ; Camara, A. R. ; Cella, N. ; Sosman, L. P.
Assuntos: Absorption spectra ; Emission ; ENGINEERING, CHEMICAL ; MATERIALS SCIENCE, MULTIDISCIPLINARY ; METALLURGY & METALLURGICAL ENGINEERING ; Ni2 ; Optical properties ; Photoluminescence ; Photoluminescence, photoacoustic ; Room temperature ; semiconductor material ; Semiconductor materials ; Substitutional impurities ; X-ray fluorescence
É parte de: Materials research (São Carlos, São Paulo, Brazil), 2020-01, Vol.23 (3), p.1
Descrição: This work presents the investigation, at room temperature, of Zn2TiO4samples containing Ni2+ ions as substitutional impurities. Samples with molecular formula Zn2(1-x)Ni2xTiO4, where x = 0.00, 0.0007, 0.001, 0.0013, 0.002 and 0.003, in which Zn2+ ions were replaced by Ni2+ ions, were prepared through solid-state method, crystalline data were obtained by X-ray diffraction, the elemental composition was determined by X-ray fluorescence and the optical properties were investigated through photoluminescence and photoacoustic techniques. The photoluminescence spectra showed broadbands from 640 nm to 800 nm. The emission of the Zn2(1-x)Ni2xTiO4 samples was assigned to the overlapping of the Ni2+and the Zn2TiO4 emission. The most intense photoluminescence signal was obtained with excitation radiation at a wavelength of 360 nm for the sample with x = 0.001. The photoacoustic spectra showed absorption bands characteristic of semiconductor materials due to the host Zn2TiO4. The energy bandgap of the Zn2(1-x)Ni2xTiO4was obtained from photoacoustic absorption spectra.
Editor: Sao Carlos: Universidade Federal do Sao Carlos, Departamento de Engenharia de Materiais
Idioma: Inglês;Português

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Photoluminescence, Photoacoustic and Structural Characteristics of Polycrystalline Zn2TiO4: Ni2+ Semiconductor

Gomes, L. P. V. ; Pedro, S. S. ; López, A. ; Camara, A. R. ; Cella, N. ; Sosman, L. P.

Sao Carlos: Universidade Federal do Sao Carlos, Departamento de Engenharia de Materiais

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