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Current Physical Chemistry

Editor-in-Chief

ISSN (Print): 1877-9468
ISSN (Online): 1877-9476

Research Article

Blue, Green and Red Upconverted Emission of Controlled Hydrothermal Pressure Synthesized Y2O3: Er3+ (1%) Tm3+ (1%) and Different Yb3+ Ratio Conditions Nanophosphors

Author(s): Solange Ivette Rivera Manrique*, Felipe de Jesús Carrillo Romo, Antonieta García Murillo, Carlos Eduardo Rodríguez García and Jorge Roberto Oliva Uc

Volume 9, Issue 3, 2019

Page: [226 - 231] Pages: 6

DOI: 10.2174/1877946809666190830151043

Abstract

Introduction: Rare earth-doped Upconverting Nanoparticles (UCN's) can convert near-infrared photons into visible photons via multiphoton processes, which makes it a good material for generating white light. The production of luminescent materials for technology applications focuses on controlling powder characteristics such as chemical homogeneity and low impurity levels.

Objective: In this research study, we synthesized Er3+ (1%) Tm3+ (1%) Yb3+ (at different percentages) by co-doping Y2O3 NPs, using the Controlled-Pressure Hydrothermal Method (CPHM), with nitrogen. The ratio used was chosen to conduct a detailed photolumniscence analysis. Methods: Samples of Y2O3: Er3+ (1%) Tm3+ (1%) Yb3+ (at 1.5%, 2%, and 2.5%) were prepared using the controlled-pressure hydrothermal method (CPHM). Each solution was transferred into a mini-clave drive Büchiglasuster with an inner Teflon vessel. In this case, the mini-clave was heated at 190°C for 3 h, and nitrogen was used to control the pressure. The initial pressure was 20 bars; it was increased during the process to 42 bars. The powders obtained were washed with distilled water using centrifugation at 4000 rpm for 15 min. The washed product was dried to 120°C, followed by subsequent heat treatment at 1000°C for 5 h.

Results: The representative XRD patterns for the Y2O3: Er3+ (1%) Tm3+ (1%) and Yb3+ (at 1.5%, 2%, 2.5%) doped samples confirms the presence of a cubic Y2O3 crystal structure. Scanning Electron Microscope (SEM) images show that the morphology of these particles is spherical. Upconversion photoluminescence spectra of Y2O3:Er3+ (1% mol) Tm3+ (1% mol) Yb3+ (1.5% mol), Yb3+ (2.0% mol), and Yb3+ (2.5% mol), after 908-nm excitation. Blue, green, and red bands are centred at 440 nm, 469 nm, 618 nm, and 678 nm, respectively.

Conclusion: The controlled-pressure hydrothermal method is a productive method for synthesizing rare earth-doped and codoped Y2O3; when Er3+, Yb3+, and Tm3+ ions are introduced into the host matrix, they do not cause any changes in the cubic structure nor influence the crystal structure. This method can used to synthesize any type of nanoparticle, because it involves low pressure (10-20 bars), low temperatures, and short time reactions.

Keywords: Controlled pressure, hydrothermal, luminescence, nitrogen, rare earths, upconversion.

Graphical Abstract
[1]
Singh, R.P.; Gupta, K.; Pandey, A.; Pandey, A. Synthesis and characterization of Eu+++ doped Y2O3 (Red Phosphor) and Tb+++ doped Y2O3 (Green Phosphor) by hydrothermal processes. World J. Nano Sci. Eng., 2012, 2(1), 13.
[2]
Zhang, J. Sintering of Yb3+: Y2O3 transparent ceramics in hydrogen atmosphere. J. Eur. Ceram. Soc., 2009, 29(2), 305-309. [http://dx.doi.org/10.1016/j.jeurceramsoc.2008.03.006].
[3]
Meza, O. Color tunability of the upconversion emission in Er-Yb doped the wide band gap nanophosphors ZrO2 and Y2O3. Mater. Sci. Eng. B: Solid-State Mater. Adv. Technol., 2010, 174(1-3), 177-181. [http://dx.doi.org/10.1016/j.mseb.2010.03.015].
[4]
Tessari, G. Synthesis and optical properties of nanosized powders: Lanthanide-doped Y2O3. Appl. Surf. Sci., 1999, 144-145(3), 686-689. [http://dx.doi.org/10.1016/S0169-4332(98)00902-7].
[5]
Lojpur, V.M.; Ahrenkiel, P.S.; Dramićanin, M.D. Color-tunable up-conversion emission in Y2O3: Yb3+, Er3+ nanoparticles prepared by polymer complex solution method. Nanoscale Res. Lett., 2013, 8(1), 131. [PMID: 23279756].
[6]
Goldstein, A.N.; Echer, C.M.; Alivisatos, A.P. Melting in semiconductor nanocrystals. Science, 1992, 256(5062), 1425-1427. [http://dx.doi.org/10.1126/science.256.5062.1425]. [PMID: 17791609].
[7]
Andrić, Ž. Properties of the (Y0.75Gd0.25)2O3: Eu3+ scintillating nanopowder. Acta Chim. Slovenica., 2008, 55(1)
[8]
Krsmanović, R. Structural characterization and luminescence properties of nanostructured lanthanide-doped Sc2O3 prepared by propellant synthesis. Nanotechnology, 2006, 17(11), 2805. [http://dx.doi.org/10.1088/0957-4484/17/11/013].
[9]
De Moura, A.P.; De Oliveira, L.H.; Paris, E.C.; Li, M.S.; Andrés, J.; Varela, J.A.; Longo, E.; Rosa, I.L. Photolumiscent properties of nanorods and nanoplates Y2O3:Eu3+. J. Fluoresc., 2011, 21(4), 1431-1438. [http://dx.doi.org/10.1007/s10895-010-0827-6]. [PMID: 21240626].
[10]
Kaszewski, J.; Witkowski, B.S.; Wachnicki, Ł.; Przybylińska, H.; Kozankiewicz, B.; Mijowska, E.; Godlewski, M. Reduction of Tb4+ ions in luminescent Y2O3: Tb nanorods prepared by microwave hydrothermal method. J. Rare Earths, 2016, 34(8), 774-781. [http://dx.doi.org/10.1016/S1002-0721(16)60093-5].
[11]
Grinberg, M.; Gryk, W. Pressure effect on luminescence of insulating crystals doped with rare earth ions. Evidence for trapped exciton In Pr3+ doped Linbo3 and LiTaO3. Rev. Adv. Mater. Sci., 2007, 14, 17-23.
[12]
Srinivasan, R.; Yogamalar, R.; Bose, A.C. Structural and optical studies of yttrium oxide nanoparticles synthesized by co-precipitation method. Mater. Res. Bull., 2010, 45(9), 1165-1170. [http://dx.doi.org/10.1016/j.materresbull.2010.05.020].
[13]
Dubey, V. Infrared spectroscopy and upconversion luminescence behaviour of erbium-doped yttrium (III) oxide phosphor. Infrared Phys. Technol., 2014, 67, 537-541. [http://dx.doi.org/10.1016/j.infrared.2014.09.014].
[14]
Lojpur, V. Structural, morphological and up-converting luminescence characteristics of nanocrystalline Y2O3: Yb/Er powders obtained via spray pyrolysis. Ceram. Int., 2014, 40(2), 3089-3095. [http://dx.doi.org/10.1016/j.ceramint.2013.10.002].
[15]
Mishra, K.; Rai, S.B. Upconversion based tunable white-light generation in Ln: Y2O3 nanocrystalline Phosphor (Ln = Tm/Er/Yb). J. Fluoresc., 2011, 21(5), 1951-1958. [http://dx.doi.org/10.1007/s10895-011-0894-3]. [PMID: 21614491].
[16]
Rai, V.K.; Dey, R.; Kumar, K. White upconversion emission in Y2O3: Er3+-Tm3+-Yb3+phosphor. Mater. Res. Bull., 2013, 48(6), 2232-2236. [http://dx.doi.org/10.1016/j.materresbull.2013.02.064].
[17]
Anh, T.; Benalloul, P.; Barthou, C.; Giang, L.T.; Vu, N.; Minh, L. Luminescence, energy transfer, and upconversion mechanisms of Y2O3 nanomaterials doped with Eu3+, Tb3+, Tm3+, Er3+, and Yb3+ ions. J. Nanomater., 2007, 2007(1), 4.

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