Deep-Red-Emitting Na1.57Zn0.57Al10.43O17:Mn4+ Phosphor: Synthesis and Photoluminescence Properties

Cao, Renping; Ye, Yujiao; Peng, Qiying; Chen, Ting; Ao, Hui; Xiao, Fang; Luo, Zhiyang; Liu, Pan

doi:10.1007/s11664-018-6698-3

Cited by 6 publications

(3 citation statements)

References 46 publications

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“…Figure13. XRD patterns and PL spectra measured at 300 K of some oxide phosphors of type O-A1 29,[82][83][84][85][86][87]. The crystal class of each host material is given in the parenthesis following after the phosphor name.…”

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confidence: 99%

Review—Mn⁴⁺-Activated Red and Deep Red-Emitting Phosphors

Adachi

2019

ECS J. Solid State Sci. Technol.

143

285

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Mn4+-activated phosphors are a new class of non-rare earth phosphors and are alternative to commercial Eu2+-activated nitride/oxynitride phosphors with growing interest in various applications. In this review article, the structural and photoluminescence (PL) properties of various Mn4+-activated phosphors have been discussed. The host materials considered here can be roughly classified into five groups; fluorides, oxides, oxyfluorides, and two fluorine compounds. Phosphors of each group can also be classified into totally eleven subgroups from their different PL spectral features, e.g., whether an appearance of the zero-phonon line (ZPL) emission peak or not. The ZPL emission and absorption energies of the Mn4+ ions have been determined from the PL and PL excitation spectra using the Franck−Condon analysis method within the configurational-coordinate (CC) model. These results are used to obtain reliable phosphor parameters, i.e., the crystal-field (Dq) and Racah parameters (B and C), of the Mn4+ ions in the various host materials. The PL intensity vs temperature data, together with those of the luminescence lifetimes, are modeled on the basis of the CC model, and an excellent agreement has been achieved if not only the optical phonon but also the acoustic phonon contribution is taken into consideration in the conventional thermal quenching model. Effects of the hydrostatic pressure and dopant concentration on the PL spectral features are also discussed. Finally, key properties of the Mn4+-activated phosphors are discussed for use of such red and deep red-emitting phosphor systems in warm w-LED and indoor plant cultivation applications.

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confidence: 99%

Review—Mn⁴⁺-Activated Red and Deep Red-Emitting Phosphors

Adachi

2019

ECS J. Solid State Sci. Technol.

143

285

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“…The structures adopt a complex crystallography and disorder with freedom arrangement of Al 3+ in tetrahedral and octahedral sites . It is known that occupancy and stability of Mn 4+ ions are observed in AlO 6 sites. − …”

Section: Resultsmentioning

confidence: 99%

“…An invisible shift was observed for the peak emissions at 461, 590, and 678 nm attributed to the negligible quantum-confined Stark effect and reduced heating effect in this high-crystalline quality nanowire LED structure and the utilization of ALO. 13,27,30 The EL spectra of this WLED do not show significant variation with increasing injection currents, resulting in highly stable emission characteristics, as shown in Figure 7b. It is seen that the WLED coated with ALO-1300 has stable CIE chromaticity coordinates with the x and y values in the ranges of 0.3391−0.354 and 0.2953−0.2899, respectively.…”

Section: Introductionmentioning

confidence: 88%

Highly Stable White Light Emission from III-Nitride Nanowire LEDs Utilizing Nanostructured Alumina-Doped Mn⁴⁺ and Mg²⁺

Doan

Tran

et al. 2023

ACS Omega

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In this report, red-emitting alumina nanophosphors doped with Mn 4+ and Mg 2+ (Al 2 O 3 :Mn 4+ , Mg 2+ ) are synthesized by a hydrothermal method using a Pluronic surfactant. The prepared samples are ceramic-sintered at various temperatures. X-ray diffraction shows that Al 2 O 3 :Mn 4+ , Mg 2+ annealed at 500 °C exhibits a cubic γ-Al 2 O 3 phase with the space group Fd3m-227. The tetragonal δ-Al 2 O 3 and rhombohedral α-Al 2 O 3 phase is obtained at 1000 and 1300 °C, respectively. Cube-like nanoparticles in a size of ∼40 nm are observed for the alumina heated at 500−1000 °C. The size and red-emitting intensity of the phosphors remarkably increased with annealed temperature ∼1300 °C. Emission spectra of the phosphors show strong peaks at 678 and 692 nm due to 2 E g → 4 A 2 transitions of the Mn 4+ ion, under a light excitation of 460 nm. A strong zero-phonon line (ZPL) emission is observed in the luminescence spectra of δ-Al 2 O 3 :Mn 4+ , Mg 2+ at 298 K, whereas a weak one is observed in those of αand γ-Al 2 O 3 :Mn 4+ , Mg 2+ . The alumina phosphors exhibited an excellent waterproof ability during 60 days in water and good thermal stability in the range of 77−573 K. A warm-white light-emitting diode (WLED) fabricated using In x Ga 1−x N nanowire chips with Al 2 O 3 :Mn 4+ , Mg 2+ red-emitting nanophosphors presents a high color rendering index of ∼95.1 and a low correlated color temperature of ∼4998 K. Moreover, the current−voltage characteristic of the nanowire LEDs could be improved using Al 2 O 3 :Mn 4+ , Mg 2+ nanophosphors which is attributed to the increased heat dissipation in the nanowire LEDs.

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A remarkably tunable emission from red to yellow to green in Mn4+-activated CaAl12O19 phosphor via co-doping Bi3+

Zhao

Wang

et al. 2019

J Mater Sci: Mater Electron

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Deep-Red-Emitting Na1.57Zn0.57Al10.43O17:Mn4+ Phosphor: Synthesis and Photoluminescence Properties

Cited by 6 publications

References 46 publications

Review—Mn⁴⁺-Activated Red and Deep Red-Emitting Phosphors

Review—Mn⁴⁺-Activated Red and Deep Red-Emitting Phosphors

Highly Stable White Light Emission from III-Nitride Nanowire LEDs Utilizing Nanostructured Alumina-Doped Mn⁴⁺ and Mg²⁺

A remarkably tunable emission from red to yellow to green in Mn4+-activated CaAl12O19 phosphor via co-doping Bi3+

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Deep-Red-Emitting Na1.57Zn0.57Al10.43O17:Mn4+ Phosphor: Synthesis and Photoluminescence Properties

Cited by 6 publications

References 46 publications

Review—Mn4+-Activated Red and Deep Red-Emitting Phosphors

Review—Mn4+-Activated Red and Deep Red-Emitting Phosphors

Highly Stable White Light Emission from III-Nitride Nanowire LEDs Utilizing Nanostructured Alumina-Doped Mn4+ and Mg2+

A remarkably tunable emission from red to yellow to green in Mn4+-activated CaAl12O19 phosphor via co-doping Bi3+

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Product

Resources

About

Review—Mn⁴⁺-Activated Red and Deep Red-Emitting Phosphors

Review—Mn⁴⁺-Activated Red and Deep Red-Emitting Phosphors

Highly Stable White Light Emission from III-Nitride Nanowire LEDs Utilizing Nanostructured Alumina-Doped Mn⁴⁺ and Mg²⁺