Design of highly efficient energy transfer phosphor Sr4Al14O25:Eu2+,Mn4+ with deep-red emission and application potential in plant growth

Li, Cancan; Zhou, Yunpeng; Seto, Takatoshi; Wang, Yuhua

doi:10.1039/d3tc00093a

Cited by 8 publications

(2 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Energy transfer is a common means of spectral modulation and usually occurs on the premise that sensitizer emission overlaps with receptor excitation to improve luminescence efficiency. [56][57][58][59] By comparing the spectra of Rb 0.80 Al 11 O 17 :0.20Eu 2+ and RbAl 10.70 O 17 :0.30Mn 2+ , there is an obvious spectral overlap between the emission spectra of Rb 0.80 Al 11 O 17 :0.20Eu 2+ and the excitation spectrum of RbAl 10.70 O 17 :0.30Mn 2+ (Fig. 4a), indicating that an effective energy transfer from Eu 2+ to Mn 2+ in the RbAl 11 O 17 matrix.…”

Section: Narrow-band Green Emission Of Rbal 11ày O 17 :Ymn 2+ Phosphorsmentioning

confidence: 99%

Highly efficient blue-green dual-narrow-emission in RbAl₁₁O₁₇:Eu²⁺,Mn²⁺ toward wide-color-gamut human-centric backlights

Xue,

Liang,

Zhang

et al. 2024

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

Section: Narrow-band Green Emission Of Rbal 11ày O 17 :Ymn 2+ Phosphorsmentioning

confidence: 99%

Highly efficient blue-green dual-narrow-emission in RbAl₁₁O₁₇:Eu²⁺,Mn²⁺ toward wide-color-gamut human-centric backlights

Xue,

Liang,

Zhang

et al. 2024

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

“…3,4 Therefore, how to regulate the required spectrum of plants during plant growth has been extensively studied. 5,6 In recent years, light conversion materials used in agricultural devices have received more and more attention. Generally, the light conversion materials used for plant growth are divided into several categories according to the PL and PLE bands: (1) Mainly the conversion from green to red, such as CaZnOS: Eu 2+ , (Ca, Sr)S: Eu 2+ , Ba 2 ZnS 3 : Eu 2+ , X − (X = Cl, Br, I), and Sr 2 Si 5 N 8 : Eu 2+ .…”

mentioning

confidence: 99%

A New Efficient Deep-Red-Emission Phosphor Y₃Al_4.9Sb_0.1O₁₂: Ce³⁺, Cr³⁺ with Application Potential in Plant Growth

Xia

Seto

et al. 2023

ECS J. Solid State Sci. Technol.

Self Cite

View full text Add to dashboard Cite

Aiming at a system of more efficient plant growth, cationic substitutions for garnet-structure host crystal activated by Ce3+ and Cr3+ are investigated. A series of Y3Al5O12: Ce3+-Cr3+, red-emitting materials excited by near-ultraviolet and blue light with a peak emission near 693nm, are synthesized using a solid-state method. The substitution of Sb3+ for Y3Al5O12: Ce3+, Cr3+ is found to increase the emission intensity of deep red about +80% because it improves the energy transfer from Ce3+ to Cr3+, where yellow emission of Ce3+ is depressed and deep red of Cr3+ increased. It also enhances the intensity-ratio of zero phonon line (ZPL) vs phonon assisted side band. It is induced that the substitution of Sb3+ having strong covalent property influences symmetric Ce3+O2-6 octahedron, significantly increasing the intensity of 2E→4A2 ZPL of Cr3+ under the resonance energy transfer of Ce3+ to Cr3+. From the ratio of Ce3+ emission intensity in the absence and presence of Cr3+, the energy transfer has a mechanism of dipole-quadrupole interaction. By using Sb3+ substitution and flux AlF3, the original emission intensity of Y3Al5O12: Ce3+, Cr3+ is increased about +183%. The new phosphor has application potential for plant growth in both methods of using LED and converting sunlight.

show abstract

Enhanced Stability and Brightness through Co‐Substitution: Promoting Plant Growth with Green‐Excited Deep Red Phosphor Ca_1‐zSr_zLi_1‐xMg_2xAl_3‐xN₄:yEu²⁺

Wang,

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

The research utilized a strategy of chemical unit co‐substitution, successfully developing a novel blue‐green to green excited, deep red‐emitting phosphor, Ca1‐zSrzLi1‐xMg2xAl3‐xN4:yEu2+ (CLA‐2xM‐zS:yEu, 0≤x≤0.8, 0.003≤y≤0.01, 0≤z≤1), through the replacement of [Li−Al]4+ by [Mg−Mg]4+. This phosphor uniquely converts unusable green light to growth‐enhancing deep red, optimizing it for outdoor agriculture. Doping with Sr creates traps, causing a redshift in emission peaks, as confirmed by 7Li nuclear magnetic resonance (NMR) spectra, indicating Li presence and lattice changes. Ca0.2Sr0.8Li0.5MgAl2.5N4:0.005Eu2+ (CLAM‐0.8S) phosphor maintained high luminescence intensity under extreme conditions of 85 °C/85% RH, demonstrating excellent photoluminescence performance and chemical stability, compared with conventional SrLi0.5MgAl2.5N4:0.005Eu2+ (SLMA) and SrLiAl3N4:0.005Eu2+(SLA). Experimental results surprised that the unique Ca0.2Sr0.8Li0.8Mg0.4Al2.8N4:0.005Eu2+ (CLA‐0.4M‐0.8S) prepared light‐converting film, which is mainly excited by green light, demonstrated a 20% increase in optical density of Chlorella compared to the PP film and a remarkable 97.5% increase compared to the control group without any film. These findings suggest that this film has significant potential for applications in outdoor agriculture and other fields.

show abstract

Design of highly efficient energy transfer phosphor Sr₄Al₁₄O₂₅:Eu²⁺,Mn⁴⁺ with deep-red emission and application potential in plant growth

Abstract: Deep-red emitting phosphors at 650-700 nm are highly required for chlorophyll a, chlorophyll b in photosynthesis process to promote plant growth. Here, single phased Sr4Al14O25 (SAO): x%Eu2+, y%Mn4+ (0.02 ≤...

Cited by 8 publications

References 41 publications

Highly efficient blue-green dual-narrow-emission in RbAl₁₁O₁₇:Eu²⁺,Mn²⁺ toward wide-color-gamut human-centric backlights

Highly efficient blue-green dual-narrow-emission in RbAl₁₁O₁₇:Eu²⁺,Mn²⁺ toward wide-color-gamut human-centric backlights

A New Efficient Deep-Red-Emission Phosphor Y₃Al_4.9Sb_0.1O₁₂: Ce³⁺, Cr³⁺ with Application Potential in Plant Growth

Enhanced Stability and Brightness through Co‐Substitution: Promoting Plant Growth with Green‐Excited Deep Red Phosphor Ca_1‐zSr_zLi_1‐xMg_2xAl_3‐xN₄:yEu²⁺

Contact Info

Product

Resources

About

Design of highly efficient energy transfer phosphor Sr4Al14O25:Eu2+,Mn4+ with deep-red emission and application potential in plant growth

Abstract: Deep-red emitting phosphors at 650-700 nm are highly required for chlorophyll a, chlorophyll b in photosynthesis process to promote plant growth. Here, single phased Sr4Al14O25 (SAO): x%Eu2+, y%Mn4+ (0.02 ≤...

Cited by 8 publications

References 41 publications

Highly efficient blue-green dual-narrow-emission in RbAl11O17:Eu2+,Mn2+ toward wide-color-gamut human-centric backlights

Highly efficient blue-green dual-narrow-emission in RbAl11O17:Eu2+,Mn2+ toward wide-color-gamut human-centric backlights

A New Efficient Deep-Red-Emission Phosphor Y3Al4.9Sb0.1O12: Ce3+, Cr3+ with Application Potential in Plant Growth

Enhanced Stability and Brightness through Co‐Substitution: Promoting Plant Growth with Green‐Excited Deep Red Phosphor Ca1‐zSrzLi1‐xMg2xAl3‐xN4:yEu2+

Contact Info

Product

Resources

About

Design of highly efficient energy transfer phosphor Sr₄Al₁₄O₂₅:Eu²⁺,Mn⁴⁺ with deep-red emission and application potential in plant growth

Highly efficient blue-green dual-narrow-emission in RbAl₁₁O₁₇:Eu²⁺,Mn²⁺ toward wide-color-gamut human-centric backlights

Highly efficient blue-green dual-narrow-emission in RbAl₁₁O₁₇:Eu²⁺,Mn²⁺ toward wide-color-gamut human-centric backlights

A New Efficient Deep-Red-Emission Phosphor Y₃Al_4.9Sb_0.1O₁₂: Ce³⁺, Cr³⁺ with Application Potential in Plant Growth

Enhanced Stability and Brightness through Co‐Substitution: Promoting Plant Growth with Green‐Excited Deep Red Phosphor Ca_1‐zSr_zLi_1‐xMg_2xAl_3‐xN₄:yEu²⁺