Energy-transfer-induced enhancement of Mn2+-based narrow-band green emission in Sr2(Mg,Mn)Al22O36 phosphor by Eu2+ alloying
Source abstract
Abstract
Abstract A high-purity green-emitting Sr2(Mg,Mn)Al22O36 solid-solution phosphor and its partial doped compound (Sr2(Mg,Mn)Al22O36: Eu2+) were synthesized via solid-state reaction. This solid-solution phosphor shows a green band at 518 nm from Mn2+ instinct 4T1-6A1 transition with a narrow FWHM of 28 nm. This green emission is of high color purity (87.7%) and thermal stable (80% of original intensity at 473 K). However, the emission intensity requires further enhancement due to the limitation of Mn2+ 3d-3d forbidden transition. With a tiny amount of Eu2+ introduced into Sr2(Mg,Mn)Al22O36, the luminescence intensity enormously improved to 260% of that in blank sample due to high-efficient Eu2+-Mn2+ energy transfer, which is induced by a structural confinement effect with Eu2+-Mn2+ distance of 6.225 A. Thus, the EQE of optimal phosphor Sr2Mg0.2Mn0.8Al22O36: 0.01Eu2+ is boosted to 42%. The above results hint that Sr2(Mg,Mn)Al22O36: Eu2+ has promising application potential as a green phosphor for backlighting LEDs in wide-color-gamut display, and this sensitized strategy could be applied for the development of high-performance phosphors.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Ammonia Synthesis and Nitrogen Reduction · Luminescence and Fluorescent Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (28)
Show source-provided references
1. Transition metal ion co-doped MgO-MgF2-GeO2: Mn4+ red phosphors for white LEDs with wider color reproduction gamut10.1016/j.jallcom.2019.152914 ↗
2. A thermally stable narrow-band green-emitting phosphor MgAl2O4: Mn2+ for wide color gamut backlight display application10.1039/C9TC02107H ↗
3. Photoluminescence and cathodoluminescence properties of novel rare-earth free narrow-band bright green-emitting ZnB2O4: Mn2+ phosphor for LEDs and FEDs10.1016/j.cej.2018.12.039 ↗
4. Thermal stability and photoluminescence of Mn2+ activated green-emitting feldspar phosphor SrAl2Si2O8: Mn2+ for wide gamut w-LED backlight10.1016/j.optmat.2019.109535 ↗
5. Narrow-band green-emitting Sr2MgAl22O36: Mn2+ phosphors with superior thermal stability and wide color gamut for backlighting display applications
6. Luminescent thermal stability and electronic structure of narrow-band green-emitting Sr-Sialon: Eu2+ phosphors for LED/LCD backlights10.1016/j.jallcom.2019.07.203 ↗
7. Luminescence properties of Li2SrSiO4: Eu2+ silicate yellow phosphors with high thermal stability for high-power efficiency white LED application10.1016/j.jlumin.2018.10.113 ↗
8. Facile synthesis of the desired red phosphor Li2Ca2Mg2Si2N6: Eu2+ for high CRI white LEDs and plant growth LED device10.1111/jace.16858 ↗
9. Next-generation narrow-band green-emitting RbLi(Li3SiO4)2: Eu2+ phosphor for backlight display application10.1002/adma.201802489 ↗
10. Rare-earth free narrow-band green-emitting KAlSi2O6: Mn2+ phosphor excited by blue light for LED-phosphor material10.1039/C5RA03323C ↗
11. Luminescence properties of sodalite-type Zn4B6O13: Mn2+10.1016/j.jlumin.2018.03.022 ↗
12. Structural confinement toward giant enhancement of red emission in Mn2+-based phosphors10.1002/adfm.201804150 ↗
13. A ratiometric optical thermometer with high sensitivity and superior signal discriminability based on Na3Sc2P3O12: Eu2+, Mn2+ thermochromic phosphor10.1016/j.cej.2018.09.075 ↗
14. Dopant preferential site-occupation and high-efficient white emission in K2BaCa(PO4)2: Eu2+, Mn2+ phosphor for high quality white LED application10.1039/C9QI00138G ↗
15. Dual-emitting Ce3+, Tb3+ co-doped LaOBr phosphor: luminescence, energy transfer and ratiometric temperature sensing10.1016/j.cej.2016.08.087 ↗
16. Novel Na3Sc2(PO4)3: Ce3+, Tb3+ phosphors for white LEDs: tunable bluegreen color emission, high quantum efficiency and excellent thermal stability10.1016/j.dyepig.2017.12.051 ↗
17. Synthesis and luminescence properties of NaAl11O17: Mn2+ green phosphor for white LEDs10.1016/j.jlumin.2016.06.028 ↗
18. A narrow-band ultra-bright green phosphor for LED-based applications10.1039/C9DT04092G ↗
19. A novel green phosphor Sr8ZnY(PO4)7: Eu2+, Ln3+ (Ln = Pr, Tm, Yb) with broad emission band for high color rendering white-lighting-emitting diodes10.1016/j.jlumin.2019.116600 ↗
20. Efficient sensitization of Mn2+ emission by Eu2+ in Ca12Al14O33Cl2 host under UV excitation10.1039/c3ra41662c ↗
21. High-efficient and thermal-stable Ca19Zn2(PO4)14: Eu2+, Mn2+ blue-red dual-emitting phosphor for plant cultivation LEDs10.1016/j.jallcom.2019.151956 ↗
22. Influence of mesoporous silica coating treatment on push-out bond strength of zirconia posts
23. Strong energy-transfer-induced enhancement of luminescence efficiency of Eu2+- and Mn2+-codoped gamma-AlON for near-UV LED-pumped solid state lighting10.1021/acs.inorgchem.5b00683 ↗
24. Biomechanical properties of nano-TiO2 addition to a medical silicone elastomer: the effect of artificial ageing10.1016/j.jdent.2014.01.002 ↗
25. A randomized trial comparing diode laser enucleation of the prostate with plasmakinetic enucleation and resection of the prostate for the treatment of benign prostatic hyperplasia10.1089/end.2013.0107 ↗
26. Efficiency enhancement of the novel Sr2MgAl22O36: Eu2+ phosphor via partial nitridation10.1016/j.jlumin.2017.08.042 ↗
27. Cationic substitution induced tuning of photoluminescence in Ba2.94-2xLaxNaxP4O13: 0.06Eu phosphors for WLEDs10.1016/j.jallcom.2020.155109 ↗
28. Enhanced photoluminescence quantum yield of red-emitting CdTe: Gd3+ QDs for WLEDs applications10.1111/jace.16994 ↗