β-Zn3BPO7:Mn2+: A novel rare-earth-free possible deep-red emitting phosphor

Han, Bing; Li, Pengju; Zhang, Jie; Jin, Lin; Luo, Wen; Shi, Hengzhen

doi:10.1016/j.optmat.2015.01.044

Cited by 14 publications

(3 citation statements)

References 13 publications

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“…The absorptions corresponding to this luminescence are only the bands near or in the shallow UV, with the colorful pleochroic bands at higher wavelengths yielding no luminescence. It is likely that octahedral Mn 2+ is responsible, due to the weak nature of the absorptions along with the orange-red luminescence often seen in oxides [14][15][16][17]. Mn 3+ typically does not luminesce, as heavily Jahn-Teller distorted species tend to have sufficient non-radiative pathways for relaxation [12].…”

Section: Pleochroism In Doped β-Ga2o3mentioning

confidence: 99%

Polarization and orientation dependent optical properties in Czochralski-grown transition metal doped β-Ga2O3

Dutton

Remple

Jesenovec³

et al. 2023

Oxide-Based Materials and Devices XIV

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Properties of monoclinic β-Ga2O3 are strongly dependent upon orientation. In the case of optical properties, polarization can reveal differences in optical bandgap and absorptions related to transition metal ions. This phenomenon is known as pleochroism and has been extensively studied in minerology. β-Ga2O3 bulk single crystals doped with Zn, Mn, Cr, or Cu were grown by the Czochralski and vertical gradient freeze methods. Ultraviolet-visible-near infrared spectroscopy and photoluminescence (PL) revealed polarization- and orientation-dependent optical absorptions in β-Ga2O3. Crystals were annealed in reducing and oxidizing environments in an attempt to alter the intensities of absorptions characteristic to the different transition metal oxidation states in a given ligand field. Visible pleochroism was strongest in (001) oriented Mndoped samples as shown by polarized optical microscopy. All samples were electrically insulating, indicative of acceptor doping, aside from Cr-doped samples where Cr acts as a deep donor.

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Section: Pleochroism In Doped β-Ga2o3mentioning

confidence: 99%

Polarization and orientation dependent optical properties in Czochralski-grown transition metal doped β-Ga2O3

Dutton

Remple

Jesenovec³

et al. 2023

Oxide-Based Materials and Devices XIV

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“…17 Typically the Zn 2 SiO 4 : Mn 2+ green phosphor has been commercially available in the energysaving lamp and plasma display panel. 18,19 Other Mn 2+ doped phosphors have also been discovered and studied in recent years, for example NaCaPO 4 : Mn 2+ , 20 Zn 3 BPO 7 : Mn 2+ , 21 M 2 (Mg, Zn)Si 2 O 7 : Mn 2+ (M = Ca, Sr, and Ba), 22 ZnGeN 2 : Mn 2+ , 23 M 2 Si 5 N 8 : Mn 2+ (M = Ca, Sr, and Ba), 24 NaAl 11 O 17 : Mn 2+ , 25 and Ba 2 ZnS 3 : Mn 2+ . 26 However, to the best of our knowledge, the narrow emission band of above phosphors cannot match well with the uptake bands of plant phytochrome P R and P FR .…”

Section: Introductionmentioning

confidence: 99%

Novel rare earth free phosphors CsMg₂P₃O₁₀: Mn²⁺ with efficient and ultra‐broadband red emission for plant growth LEDs

Dai

et al. 2022

J Am Ceram Soc.

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An efficient and ultra‐broadband red phosphor CsMg2P3O10: Mn2+ (CMPO: Mn2+) is first synthesized toward indoor plant growth LEDs. The phase purity, element composition, crystal, and local electronic structure are explored to discuss the structure and photoluminescence properties. Structure refinement and series X‐ray diffractometer (XRD) results show that CMPO: Mn2+ is well crystallized in an orthogonal crystal system. The diffuse reflection and excitation spectra show that CMPO: Mn2+ has strong absorption around near ultraviolet region, assigned to the [6A1 → 4E(4D), 4T2(4D), [4A1(4G), 4E(4G)], and 4T1(4G)] transitions of Mn2+, respectively. Upon 415 nm excitation, an efficient red emission centered at 647 nm with ultra‐broad full width at half‐maximum (FWHM ∼ 100 nm) and high quantum efficiency (IQE ∼ 44.3 %) is observed, and because of the ultra‐broad FWHM, the red emission is well accordant with the absorption spectra band of phytochrome PR and PFR. The optimal doping contents, lifetime as well as interaction mechanism of CMPO: Mn2+ are discussed in detail. Finally, the excellent thermal stability (84.5% @ 140°C) and related thermal quenching mechanism of CMPO: Mn2+ are discussed. The above results indicate that CMPO: Mn2+ phosphors have great potential for application in plant growth LEDs.

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“…, and it varies from green (tetrahedral coordination of manganese ions) to red (octahedrally coordinated Mn 2? ) [10][11][12][13][14]. Thus, simultaneously doping the host material with Eu 3?…”

Section: Introductionmentioning

confidence: 99%

Synthesis and thermal, optical and magnetic properties of new Mn2+-doped and Eu3+-co-doped scheelites

Karolewicz

Fuks

Tomaszewicz

2019

J Therm Anal Calorim

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A series of Mn 2? -doped and Eu 3? -co-doped calcium molybdato-tungstates, i.e., Ca 1−3x−y Mn y ⌷ x Eu 2x (MoO 4 ) 1−3x (WO 4 ) 3x (0 \ x ≤ 0.2222 when y = 0.0200 and 0 \ y ≤ 0.0667 when x = 0.1667, ⌷ represents vacancy) materials were successfully synthesized via high-temperature annealing. XRD results confirmed the formation of single, tetragonal scheelite-type phases (space group I4 1 /a). A change in both lattice constants (a and c), lattice parameter ratio c/a and progressive deformation of MoO 4 /WO 4 tetrahedra with increasing Eu 3? as well as Mn 2? contents were observed. The melting point of doped materials is lower than the melting point of pure matrix, i.e., CaMoO 4 . New materials exhibit strong absorption in the UV range. They are insulators with the optical direct band gap (E g ) higher than 3.50 eV. The E g values nonlinearly change with increasing dopants concentrations. EPR measurements allowed to establish the nature of magnetic interactions among Mn 2? ions. Additionally, EPR spectra were sensitive on both parameters: Mn 2? and Eu 3? concentration.

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β-Zn3BPO7:Mn2+: A novel rare-earth-free possible deep-red emitting phosphor

Cited by 14 publications

References 13 publications

Polarization and orientation dependent optical properties in Czochralski-grown transition metal doped β-Ga2O3

Polarization and orientation dependent optical properties in Czochralski-grown transition metal doped β-Ga2O3

Novel rare earth free phosphors CsMg₂P₃O₁₀: Mn²⁺ with efficient and ultra‐broadband red emission for plant growth LEDs

Synthesis and thermal, optical and magnetic properties of new Mn2+-doped and Eu3+-co-doped scheelites

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β-Zn3BPO7:Mn2+: A novel rare-earth-free possible deep-red emitting phosphor

Cited by 14 publications

References 13 publications

Polarization and orientation dependent optical properties in Czochralski-grown transition metal doped β-Ga2O3

Polarization and orientation dependent optical properties in Czochralski-grown transition metal doped β-Ga2O3

Novel rare earth free phosphors CsMg2P3O10: Mn2+ with efficient and ultra‐broadband red emission for plant growth LEDs

Synthesis and thermal, optical and magnetic properties of new Mn2+-doped and Eu3+-co-doped scheelites

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Product

Resources

About

Novel rare earth free phosphors CsMg₂P₃O₁₀: Mn²⁺ with efficient and ultra‐broadband red emission for plant growth LEDs