The effect of Ba/Mg impurities on the phase formation and photoluminescence properties of (Sr3−xMx)Al2O6:Eu3+,Ho3+ (M = Ba, Mg) phosphors

Öztürk, Esra

doi:10.1007/s10973-016-5546-z

J Therm Anal Calorim

2016

DOI: 10.1007/s10973-016-5546-z

|View full text |Cite

The effect of Ba/Mg impurities on the phase formation and photoluminescence properties of (Sr3−xMx)Al2O6:Eu3+,Ho3+ (M = Ba, Mg) phosphors

Esra Öztürk

Abstract: The Eu 3?-activated strontium aluminate-based Sr 3 Al 2 O 6 :Eu 3? ,Ho 3? , Sr 2.99 Ba 0.01 Al 2 O 6 :Eu 3? ,Ho 3? and Sr 2.99 Mg 0.01 Al 2 O 6 :Eu 3? ,Ho 3? phosphor systems were prepared by the solid-state reaction method under open atmosphere. DTA/TG analysis was conducted to obtain the thermal behaviours of the phosphors. Depending on the thermal analysis results, the heat treatments were carried out and the obtained single phase formations were characterised by X-ray diffraction. The effects of Ba 2? and … Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2017

2024

Publication Types

Select...

Article4

Relationship

Self Cite0

Independent4

Authors

Journals

Cited by 4 publications

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

The Investigation of the Effect of La³⁺, Eu³⁺, and Sm³⁺ Ions on Photoluminescence and Piezoelectric Behavior of RE_1.90Y_0.10Zr₂O₇ (RE: Eu, Sm and Y: La, Sm, Eu) Pyrochlore‐Based Multifunctional Smart Advanced Materials

Öztürk,

Kalaycioglu Ozpozan,

Kalem

2024

Luminescence

View full text Add to dashboard Cite

A series of compounds with the general formula RE1.90Y0.10Zr2O7 (where RE includes Eu, Sm and Y includes La, Sm, Eu) were synthesized using a solid‐state reaction method. These compounds were analyzed through differential thermal analysis (DTA), thermogravimetric analysis (TG), X‐ray powder diffraction (XRD), and scanning electron microscopy (SEM). Additionally, their dielectric constant, loss tangent, piezoelectric charge constant, and Curie temperature were measured using an LCR meter, d33 meter, and TG/DTA. X‐ray diffraction results indicated that all samples crystallize in a cubic pyrochlore structure. Photoluminescence studies revealed that Eu3+ ions predominantly contribute to the emission, whether as activators or co‐activators. Among the phosphors, Eu1.90La0.10Zr2O7 exhibited a significantly longer afterglow compared to Sm1.90Eu0.10Zr2O7 and Eu1.90Sm0.10Zr2O7. Conversely, Sm1.90Eu0.10Zr2O7 demonstrated luminescence intensity that was 20 times greater than that of Eu1.90La0.10Zr2O7 and Eu1.90Sm0.10Zr2O7. Furthermore, all samples with characteristic Eu3+ emissions also exhibited piezoelectric properties. Curie temperature (Tc) of Eu1.90La0.10Zr2O7, Sm1.90Eu0.10Zr2O7, and Eu1.90Sm0.10Zr2O7 are 770°C, 830°C, and 845°C, respectively. Therefore, Sm3+ ion improves piezoelectric properties and Curie temperature when doping into the Eu2Zr2O7 host crystal.

show abstract

The Investigation of the Effect of La³⁺, Eu³⁺, and Sm³⁺ Ions on Photoluminescence and Piezoelectric Behavior of RE_1.90Y_0.10Zr₂O₇ (RE: Eu, Sm and Y: La, Sm, Eu) Pyrochlore‐Based Multifunctional Smart Advanced Materials

Öztürk,

Kalaycioglu Ozpozan,

Kalem

2024

Luminescence

View full text Add to dashboard Cite

show abstract

Synthesis and thermal stability of rare-earths molybdates and tungstates with fluorite- and scheelite-type structure

Pawlikowska

Piątkowska

Tomaszewicz

2017

J Therm Anal Calorim

View full text Add to dashboard Cite

Enriching the Deep-Red Emission in (Mg, Ba)₃M₂GeO₈: Mn⁴⁺ (M = Al, Ga) Compositions for Light-Emitting Diodes

Kuttiat

Abraham

Kunti

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Red emission from Mn4+-containing oxides inspired the development of high color rendering and cost-effective white-light-emitting diodes (WLEDs). Aiming at this fact, a series of new crystallographic site modified (Mg, Ba)3M2GeO8: Mn4+ (M = Al, Ga) compositions were developed with strong deep-red emission in the reaction to UV and blue lights. The Mg3Al2GeO8 host is composed of three phases: orthorhombic-Mg3Ga2GeO8, orthorhombic-Mg2GeO4, and cubic-MgAl2O4. However, Mg3Ga2GeO8 secured an orthorhombic crystal structure. Interestingly, Mg3Al2GeO8: Mn4+ showed a 13-fold more intense emission than Mg3Ga2GeO8: Mn4+ since Mn4+ occupancy was preferable to [AlO6] sites compared to [GaO6]. The coexisting phases of MgAl2O4 and Mg2GeO4 in Mg3Al2GeO8: Mn4+ contributed to Mn4+ luminescence by providing additional [AlO6] and [MgO6] octahedrons for Mn4+ occupancy. Further, these sites reduced the natural reduction probability of Mn4+ to Mn2+ in [AlO4] tetrahedrons, which was confirmed using cathodoluminescence analysis for the first time. A cationic substitution strategy was employed on Mg3M2GeO8: Mn4+ to improve the luminescence, and Mg3–x Ba x M2GeO8: Mn4+ (M = Al, Ga) phosphors were synthesized. Partial substitution of larger Ba2+ ions in Mg2+ sites caused structural distortions and generated a new Ba impurity phase, which improved the photoluminescence. Compositionally tuned Mg2.73Ba0.27Al1.993GeO8: 0.005Mn4+ exhibited a 35-fold higher emission than that of Mg3Ga1.993GeO8: 0.005Mn4+. Additionally, this could retain 70% of its ambient emission intensity at 453 K. A warm WLED with a correlated color temperature (CCT) of 3730 K and a CRI of 89 was fabricated by combining the optimized red component with Y3Al5O12: Ce3+ and 410 nm blue LED. By tuning the ratio of blue (BaMgAl10O17: Eu2+), green (Ce0.63Tb0.37MgAl11O19), and red (Mg2.73Ba0.27Al2GeO8: 0.005Mn4+) phosphors, another WLED was developed using a 280 nm UV-LED chip. This showed natural white emission with a CRI of 79 and a CCT of 5306 K. Meanwhile, three red LEDs were also fabricated using the Mg2.73Ba0.27Al1.993GeO8: 0.005Mn4+ phosphor with commercial sources. These could be potential pc-LEDs for plant growth applications.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

The effect of Ba/Mg impurities on the phase formation and photoluminescence properties of (Sr3−xMx)Al2O6:Eu3+,Ho3+ (M = Ba, Mg) phosphors

Cited by 4 publications

References 12 publications

The Investigation of the Effect of La³⁺, Eu³⁺, and Sm³⁺ Ions on Photoluminescence and Piezoelectric Behavior of RE_1.90Y_0.10Zr₂O₇ (RE: Eu, Sm and Y: La, Sm, Eu) Pyrochlore‐Based Multifunctional Smart Advanced Materials

The Investigation of the Effect of La³⁺, Eu³⁺, and Sm³⁺ Ions on Photoluminescence and Piezoelectric Behavior of RE_1.90Y_0.10Zr₂O₇ (RE: Eu, Sm and Y: La, Sm, Eu) Pyrochlore‐Based Multifunctional Smart Advanced Materials

Synthesis and thermal stability of rare-earths molybdates and tungstates with fluorite- and scheelite-type structure

Enriching the Deep-Red Emission in (Mg, Ba)₃M₂GeO₈: Mn⁴⁺ (M = Al, Ga) Compositions for Light-Emitting Diodes

Contact Info

Product

Resources

About

The effect of Ba/Mg impurities on the phase formation and photoluminescence properties of (Sr3−xMx)Al2O6:Eu3+,Ho3+ (M = Ba, Mg) phosphors

Cited by 4 publications

References 12 publications

The Investigation of the Effect of La3+, Eu3+, and Sm3+ Ions on Photoluminescence and Piezoelectric Behavior of RE1.90Y0.10Zr2O7 (RE: Eu, Sm and Y: La, Sm, Eu) Pyrochlore‐Based Multifunctional Smart Advanced Materials

The Investigation of the Effect of La3+, Eu3+, and Sm3+ Ions on Photoluminescence and Piezoelectric Behavior of RE1.90Y0.10Zr2O7 (RE: Eu, Sm and Y: La, Sm, Eu) Pyrochlore‐Based Multifunctional Smart Advanced Materials

Synthesis and thermal stability of rare-earths molybdates and tungstates with fluorite- and scheelite-type structure

Enriching the Deep-Red Emission in (Mg, Ba)3M2GeO8: Mn4+ (M = Al, Ga) Compositions for Light-Emitting Diodes

Contact Info

Product

Resources

About

The Investigation of the Effect of La³⁺, Eu³⁺, and Sm³⁺ Ions on Photoluminescence and Piezoelectric Behavior of RE_1.90Y_0.10Zr₂O₇ (RE: Eu, Sm and Y: La, Sm, Eu) Pyrochlore‐Based Multifunctional Smart Advanced Materials

The Investigation of the Effect of La³⁺, Eu³⁺, and Sm³⁺ Ions on Photoluminescence and Piezoelectric Behavior of RE_1.90Y_0.10Zr₂O₇ (RE: Eu, Sm and Y: La, Sm, Eu) Pyrochlore‐Based Multifunctional Smart Advanced Materials

Enriching the Deep-Red Emission in (Mg, Ba)₃M₂GeO₈: Mn⁴⁺ (M = Al, Ga) Compositions for Light-Emitting Diodes