Preparation and cathodoluminescence characteristics of rare earth activated BaAl2O4 phosphors

Autor: Mehmet Ayvacıklı, Nurdogan Can, Y. Karabulut, A. Canimoglu, Ümit H. Kaynar, L. Chahed, S. Benourdja, J. Garcia Guinea
Přispěvatelé: Jazan University, Physics Department, P.O. Box 114, Jazan, 45142, Saudi Arabia, Laboratoire de Physique des Couches Minces et Matériaux pour l′Electronique, Université d′Oran 1, Ahmed Ben Bella, BP 1524, El M′naouar, Oran, 31000, Algeria, Manisa Celal Bayar University, Education Faculty, Primary School Science Teaching, Demirci-Manisa, Turkey, Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu, Manisa, Turkey, Manisa Celal Bayar University, Faculty of Arts and Sciences, Physics Department, Muradiye, Manisa, Turkey, Museo Nacional Ciencias Naturales, Jose Gutierrez Abascal 2, Madrid, 28006, Spain, Nigde Omer Halis Demir University, Faculty of Arts and Sciences, Physics Department, Nigde, Turkey, 0-Belirlenecek, Jazan University, Benourdja, S., Jazan University, Physics Department, P.O. Box 114, Jazan, 45142, Saudi Arabia, Laboratoire de Physique des Couches Minces et Matériaux pour l'Electronique, Université d'Oran 1, Ahmed Ben Bella, BP 1524, El M'naouar, Oran, 31000, Algeria -- Kaynar, Ü.H., Manisa Celal Bayar University, Education Faculty, Primary School Science Teaching, Demirci-Manisa, Turkey -- Ayvacikli, M., Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu, Manisa, Turkey -- Karabulut, Y., Manisa Celal Bayar University, Faculty of Arts and Sciences, Physics Department, Muradiye, Manisa, Turkey -- Guinea, J.G., Museo Nacional Ciencias Naturales, Jose Gutierrez Abascal 2, Madrid, 28006, Spain -- Canimoglu, A., Nigde Omer Halis Demir University, Faculty of Arts and Sciences, Physics Department, Nigde, Turkey -- Chahed, L., Laboratoire de Physique des Couches Minces et Matériaux pour l'Electronique, Université d'Oran 1, Ahmed Ben Bella, BP 1524, El M'naouar, Oran, 31000, Algeria -- Can, N., Jazan University, Physics Department, P.O. Box 114, Jazan, 45142, Saudi Arabia, Manisa Celal Bayar University, Faculty of Arts and Sciences, Physics Department, Muradiye, Manisa, Turkey
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
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Popis: Undoped and Pr, Sm and Tb activated BaAl2O4 phosphors have been synthesized by solid state reaction method and combustion method. The structure and morphological observation of the phosphor samples were monitored by X-ray powder diffraction (XRD) and environmental scanning electron microscope (ESEM) coupled to an energy dispersive X-ray spectrometer (EDS). The all diffraction peaks are well assigned to standard data card (PDF?17–306). Emission properties of the samples were explored using light emission induced by an electron beam (i.e cathodoluminescence, CL) at room temperature (RT). Undoped BaAl2O4 sample exhibits a broad defect emission from 300 to 500 nm from the aluminate defect centres. CL spectra recorded at room temperature display that the as-prepared BaAl2O4:Ln (Ln=Pr, Sm and Tb) phosphors exhibit different luminescence colors coming from different rare earth activator ions. The transition 4G5/2 › 6H7/2 located at 606 and 610 nm for Sm3+ can occur as hypersensitive transition having the selection rule ?J = ± 1. For the Tb3+ doped samples, they exhibit D45 green line emissions. The proposed luminescent mechanisms of all doped rare earth ions are also discussed. © 2018 Elsevier Ltd
Deanship of Scientific Research, King Faisal University Jazan University
This study is based on the research supported by the Deanship of Scientific Research (DSR) at Jazan University, KSA and this financial assistance from Jazan University is gratefully acknowledged.
Databáze: OpenAIRE
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