New Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components

Due to the ongoing need to create phosphors with the appropriate emission color for the production of light emitting diodes, we decided to synthesize a series of multicolour microphosphors with tunable visible emissions, depending on the composition of dopant ions. In this work, we investigated the...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Justyna Czajka, Agata Szczeszak, Nina Kaczorowska, Stefan Lis
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	luminescence LED components lanthanides optical materials tungstate–molybdate phosphors Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/dcc863bb66544c02b7fb4b77647dd27e
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:dcc863bb66544c02b7fb4b77647dd27e
record_format	dspace
spelling	oai:doaj.org-article:dcc863bb66544c02b7fb4b77647dd27e2021-11-11T18:08:33ZNew Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components10.3390/ma142166081996-1944https://doaj.org/article/dcc863bb66544c02b7fb4b77647dd27e2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6608https://doaj.org/toc/1996-1944Due to the ongoing need to create phosphors with the appropriate emission color for the production of light emitting diodes, we decided to synthesize a series of multicolour microphosphors with tunable visible emissions, depending on the composition of dopant ions. In this work, we investigated the structure, morphology, and luminescent properties of new molybdate–tungstate phosphors co-doped with Tb<sup>3+</sup> and Eu<sup>3+</sup> ions. The conventional high temperature solid state method was used to prepare a series of CaMo<sub>y</sub>W<sub>1−y</sub>O<sub>4</sub>:Eu<sup>3+</sup><sub>x</sub>/Tb<sup>3+</sup><sub>1−x</sub> materials. In order to obtain phosphors with the most promising luminescent properties, the experiment was planned by taking into account the different composition of the matrix and the concentration of the particular dopant ions (Eu<sup>3+</sup><sub>x</sub>/Tb<sup>3+</sup><sub>1−x</sub>, x = 0.001, 0.003, 0.005, 0.007, 0.009). As a result, luminescent materials were obtained with a pure tetragonal crystal structure, the space group of <i>I</i>4<sub>1</sub>/a, confirmed by X-ray diffraction (XRD). The size and shape of the particles obtained from the materials were analyzed based on scanning electron microscopy images. Luminescence spectroscopy (excitation and emission spectra, decay lifetimes) was utilized to characterize the luminescence properties of the as-prepared phosphors. The color change of the emission from green-yellow to orange-red was confirmed using the 1931 Comission Internationale de l’Eclairage (CIE) chromaticity coordinates and color correlated temperature (CCT).Justyna CzajkaAgata SzczeszakNina KaczorowskaStefan LisMDPI AGarticleluminescenceLED componentslanthanidesoptical materialstungstate–molybdate phosphorsTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6608, p 6608 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	luminescence LED components lanthanides optical materials tungstate–molybdate phosphors Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	luminescence LED components lanthanides optical materials tungstate–molybdate phosphors Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Justyna Czajka Agata Szczeszak Nina Kaczorowska Stefan Lis New Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components
description	Due to the ongoing need to create phosphors with the appropriate emission color for the production of light emitting diodes, we decided to synthesize a series of multicolour microphosphors with tunable visible emissions, depending on the composition of dopant ions. In this work, we investigated the structure, morphology, and luminescent properties of new molybdate–tungstate phosphors co-doped with Tb<sup>3+</sup> and Eu<sup>3+</sup> ions. The conventional high temperature solid state method was used to prepare a series of CaMo<sub>y</sub>W<sub>1−y</sub>O<sub>4</sub>:Eu<sup>3+</sup><sub>x</sub>/Tb<sup>3+</sup><sub>1−x</sub> materials. In order to obtain phosphors with the most promising luminescent properties, the experiment was planned by taking into account the different composition of the matrix and the concentration of the particular dopant ions (Eu<sup>3+</sup><sub>x</sub>/Tb<sup>3+</sup><sub>1−x</sub>, x = 0.001, 0.003, 0.005, 0.007, 0.009). As a result, luminescent materials were obtained with a pure tetragonal crystal structure, the space group of <i>I</i>4<sub>1</sub>/a, confirmed by X-ray diffraction (XRD). The size and shape of the particles obtained from the materials were analyzed based on scanning electron microscopy images. Luminescence spectroscopy (excitation and emission spectra, decay lifetimes) was utilized to characterize the luminescence properties of the as-prepared phosphors. The color change of the emission from green-yellow to orange-red was confirmed using the 1931 Comission Internationale de l’Eclairage (CIE) chromaticity coordinates and color correlated temperature (CCT).
format	article
author	Justyna Czajka Agata Szczeszak Nina Kaczorowska Stefan Lis
author_facet	Justyna Czajka Agata Szczeszak Nina Kaczorowska Stefan Lis
author_sort	Justyna Czajka
title	New Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components
title_short	New Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components
title_full	New Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components
title_fullStr	New Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components
title_full_unstemmed	New Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components
title_sort	new multicolor tungstate-molybdate microphosphors as an alternative to led components
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/dcc863bb66544c02b7fb4b77647dd27e
work_keys_str_mv	AT justynaczajka newmulticolortungstatemolybdatemicrophosphorsasanalternativetoledcomponents AT agataszczeszak newmulticolortungstatemolybdatemicrophosphorsasanalternativetoledcomponents AT ninakaczorowska newmulticolortungstatemolybdatemicrophosphorsasanalternativetoledcomponents AT stefanlis newmulticolortungstatemolybdatemicrophosphorsasanalternativetoledcomponents
_version_	1718431973676941312

New Multicolor Tungstate-Molybdate Microphosphors as an Alternative to LED Components

Ejemplares similares