Narrow-band red-emitting Sr[LiAl3N4]:Eu2+ as a next-generation LED-phosphor material
Source abstract
Abstract
To facilitate the next generation of high-power white-light-emitting diodes (white LEDs), the discovery of more efficient red-emitting phosphor materials is essential. In this regard, the hardly explored compound class of nitridoaluminates affords a new material with superior luminescence properties. Doped with Eu(2+), Sr[LiAl3N4] emerged as a new high-performance narrow-band red-emitting phosphor material, which can efficiently be excited by GaN-based blue LEDs. Owing to the highly efficient red emission at λ(max) ~ 650 nm with a full-width at half-maximum of ~1,180 cm(-1) (~50 nm) that shows only very low thermal quenching (>95% relative to the quantum efficiency at 200 °C), a prototype phosphor-converted LED (pc-LED), employing Sr[LiAl3N4]:Eu(2+) as the red-emitting component, already shows an increase of 14% in luminous efficacy compared with a commercially available high colour rendering index (CRI) LED, together with an excellent colour rendition (R(a)8 = 91, R9 = 57). Therefore, we predict great potential for industrial applications in high-power white pc-LEDs.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Inorganic Chemistry and Materials · Ammonia Synthesis and Nitrogen Reduction
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (54)
Show source-provided references
1. Che, C. & Liu, R-S. Advances in phosphors for light-emitting diodes. J. Phys. Chem. Lett. 2, 1268–1277 (2011).10.1021/jz2002452 ↗
2. He, X-H. et al. Dependence of luminescence properties on composition of rare-earth activated (oxy)nitrides phosphors for white-LEDs applications. J. Mater. Sci. 44, 4763–4775 (2009).10.1007/s10853-009-3668-4 ↗
3. Höppe, H. A. Recent developments in the field of inorganic phosphors. Angew. Chem. Int. Ed. 48, 3572–3582 (2009).10.1002/anie.200804005 ↗
4. Mikami, M. et al. New phosphors for white LEDs: Material design concepts. IOP Conf. Ser.: Mater. Sci. Eng. 1, 012002 (2009).10.1088/1757-8981/1/1/012002 ↗
5. Xie, R-J. & Hirosaki, N. Silicon-based oxynitride phosphors for white LEDs—A review. Sci. Technol. Adv. Mater. 8, 588–600 (2007).10.1016/j.stam.2007.08.005 ↗
6. Xie, R-J. et al. Rare-earth activated nitride phosphors: synthesis, luminescence and applications. Materials 3, 3777–3793 (2010).10.3390/ma3063777 ↗
7. Ye, S. et al. Phosphors in phosphor-converted white light-emitting diodes: Recent advances in materials, techniques and properties. Mater. Sci. Eng. R 71, 1–34 (2010).10.1016/j.mser.2010.07.001 ↗
8. Krames, M. et al. Wavelength conversion for producing white light from a high power blue light emitting diode (LED). PCT Int. Appl., WO 2010131133A1 (2010)
9. Mueller-Mach, R. et al. High-power phosphor-converted light-emitting diodes based on III-nitrides. IEEE J. Sel. Top. Quantum Electron. 8, 339–345 (2002).10.1109/2944.999189 ↗
10. Setlur, A. A. Phosphors for LED-based solid-state lighting. Electrochem. Soc. Interf. 18, 32–36 (2009).10.1149/2.F04094IF ↗
11. Robbins, D. J. The effects of crystal field and temperature on the photoluminescence excitation efficiency of Ce3+ in YAG. J. Electrochem. Soc. 126, 1150–1555 (1979).
12. Nakamura, S. & Fasol, G. The Blue Laser Diode (Springer, 1997).10.1007/978-3-662-03462-0 ↗
13. Nakamura, S. Present performance of InGaN-based blue/green/yellow LEDs. Proc. SPIE 3002, 26–35 (1997).10.1117/12.271048 ↗
14. Schlotter, P., Schmidt, R. & Schneider, J. Luminescence conversion of blue light emitting diodes. Appl. Phys. A 64, 417–418 (1997).10.1007/s003390050498 ↗
15. Krames, M. R. et al. Status and future of high-power light-emitting diodes for solid-state lighting. J. Disp. Tech. 3, 160–175 (2007).10.1109/JDT.2007.895339 ↗
16. Höppe, H. A. et al. Luminescence in Eu2+-doped Ba2Si5N8: Fluorescence, thermoluminescence and upconversion. J. Phys. Chem. Solids 61, 2001–2006 (2000).10.1016/S0022-3697(00)00194-3 ↗
17. Mueller-Mach, R. et al. Highly efficient all-nitride phosphor-converted white light emitting diode. Phys. Status Solidi 202, 1727–1732 (2005).10.1002/pssa.200520045 ↗
18. Uheda, K., Hirosaki, N. & Yamamoto, H. Host lattice materials in the system Ca3N2–AlN–Si3N4 for white light emitting diode. Phys. Status Solidi 11, 2712–2717 (2006).10.1002/pssa.200669576 ↗
19. Uheda, K. et al. Luminescence properties of a red phosphor, CaAlSiN3:Eu2+, for white light-emitting diodes. Electrochem. Solid State Lett. 9, H22–H25 (2006).10.1149/1.2173192 ↗
20. Mueller-Mach, R. & Mueller, G. White light emitting diodes for illumination. Proc. SPIE 3938, 30–41 (2000).10.1117/12.382840 ↗
21. Zeuner, M., Pagano, S. & Schnick, W. Nitridosilicates and oxonitridosilicates: From ceramic materials to structural and functional diversity. Angew. Chem. Int. Ed. 50, 7754–7775 (2011).10.1002/anie.201005755 ↗
22. Blasse, G. & Bril, A. Characteristic luminescence II. Efficiency of phosphors excited in the activator. Philips Tech. Rev. 31, 314–323 (1970).
23. Vos, J. J. Colorimetric and photometric properties of a 2-deg fundamental observer. Color Res. Appl. 3, 125–128 (1978).10.1002/col.5080030309 ↗
24. Yamashita, N., Harada, O. & Nakamura, K. Photoluminescence spectra of Eu2+ centers in Ca(S, Se):Eu and Sr(S, Se):Eu. Jpn. J. Appl. Phys. 34, 5539–5545 (1995).10.1143/JJAP.34.5539 ↗
25. MacAdam, D. L. Visual sensitivities to color differences in daylight. J. Opt. Soc. Am. 32, 247–273 (1942).10.1364/JOSA.32.000247 ↗
26. Stoll, H. & Hoppe, R. Ein neues Oxoplumbat (IV): CsNa3[PbO4]. Rev. Chim. Min. 24, 96–115 (1987).
27. Liebau, F. Structural Chemistry of Silicates (Springer, 1985).10.1007/978-3-642-50076-3 ↗
28. Shannon, R. D. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallogr. A 32, 751–767 (1976).10.1107/S0567739476001551 ↗
29. Scheu, C. et al. Electron energy-loss near-edge structure of metal-alumina interfaces. Microsc. Microanal. Microstruct. 6, 19–31 (1995).10.1051/mmm:1995104 ↗
30. Mauchamp, V. et al. Determination of lithium insertion sites in LixTiP4 (x = 2–11) by electron energy-loss spectroscopy. J. Phys. Chem. C 111, 3996–4002 (2007).10.1021/jp066983p ↗
31. Zeuner, M. et al. Li2CaSi2N4 and Li2SrSi2N4—A synthetic approach to three-dimensional lithium nitridosilicates. Eur. J. Inorg. Chem. 4945–4591 (2010).10.1002/ejic.201000671 ↗
32. Lupart, S. & Schnick, W. LiCa3Si2N5—A lithium nitridosilicate with a [Si2N5]7− double-chain. Z. Anorg. Allg. Chem. 638, 2015–2019 (2012).10.1002/zaac.201200106 ↗
33. Pagano, S. et al. Single-crystal structure determination and solid-state NMR investigations of lithium nitridosilicate Li2SiN2 synthesized by a precursor approach employing amorphous “Si(CN2)2”. Eur. J. Inorg. Chem. 1579–1584 (2009).10.1002/ejic.200801168 ↗
34. Henderson, B. & Imbusch, G. F. Optical Spectroscopy of Inorganic Solids (Oxford Univ. Press, 2006).10.1093/oso/9780199298624.001.0001 ↗
35. Schlieper, T., Milius, W. & Schnick, W. Nitrido-silicate. II. Hochtemperatur-Synthesen und Kristallstrukturen von Sr2Si5N8 und Ba2Si5N8 . Z. Anorg. Allg. Chem. 621, 1380–1384 (1995).10.1002/zaac.19956210817 ↗
36. Botterman, J. et al. Mechanoluminescence in BaSi2O2N2:Eu. Acta Mater. 60, 5494–5500 (2012).10.1016/j.actamat.2012.06.055 ↗
37. Kechele, J. A. et al. Structure elucidation of BaSi2O2N2—A host lattice for rare-earth doped luminescent materials in phosphor-converted (pc)-LEDs. Solid State Sci. 11, 537–543 (2009).10.1016/j.solidstatesciences.2008.06.014 ↗
38. Li, Y. Q. et al. Luminescence properties of Eu2+-activated alkaline-earth silicon-oxynitride MSi2O2−δN2+2/3δ . Chem. Mater. 17, 3242–3248 (2005).10.1021/cm050175d ↗
39. Seibald, M. et al. Highly efficient pc-LED phosphors Sr1−xBaxSi2O2N2:Eu2+ (0 ≤ x ≤ 1)—crystal structures and luminescence properties revisited. Crit. Rev. Solid State Mater. Sci. 39, 215–229 (2014).10.1080/10408436.2013.863175 ↗
40. Wang, L. et al. Electronic structure and linear optical property of BaSi2N2O2 crystal. J. Alloys Compd 509, 10203–10206 (2011).10.1016/j.jallcom.2011.08.060 ↗
41. Yun, B-G. et al. Preparation and luminescence properties of single-phase BaSi2O2N2:Eu2+, a bluish-green phosphor for white light-emitting diodes. J. Electrochem. Soc. 157, J364–J370 (2010).10.1149/1.3479763 ↗
42. Meijerink, A. & Blasse, G. Luminescence properties of Eu2+-activated alkaline-earth haloborates. J. Lumin. 43, 283–289 (1989).10.1016/0022-2313(89)90098-7 ↗
43. Dirksen, G. J. & Blasse, G. Luminescence in the pentaborate LiBa2B5O10 . J. Solid State Chem. 92, 591–593 (1991).10.1016/0022-4596(91)90365-O ↗
44. Dorenbos, P. A review on how lanthanide impurity levels change with chemistry and structure of inorganic compounds. J. Solid State Sci. Technol. 2, R3001–R3011 (2013).10.1149/2.001302jss ↗
45. Dorenbos, P. 5d-level energies of Ce3+ and the crystalline environment. I. Fluoride compounds. Phys. Rev. B 62, 15640–15649 (2000).10.1103/PhysRevB.62.15640 ↗
46. Dorenbos, P. 5d-level energies of Ce3+ and the crystalline environment. III. Oxides containing ionic complexes. Phys. Rev. B 64, 125117 (2001).10.1103/PhysRevB.64.125117 ↗
47. Dorenbos, P. Relating the energy of the [Xe]5d1 configuration of Ce3+ in inorganic compounds with anion polarizability and cation electronegativity. Phys. Rev. B 65, 235110 (2002).10.1103/PhysRevB.65.235110 ↗
48. Li, Y. Q. et al. Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors. J. Alloys Compd 417, 273–279 (2006).10.1016/j.jallcom.2005.09.041 ↗
49. Spek, A. L. PLATON—A Multipurpose Crystallographic Tool, v1.07 (Utrecht Univ., 2003).
50. Sheldrick, G. M. A short history of SHELX. Acta Crystallogr. A 64, 112–122 (2008).10.1107/S0108767307043930 ↗
51. Stoe & Cie GmbH, WINXPOW—Program for Powder Data Handling, v2.21 (Darmstadt, 2007).
52. Coelho, A. TOPAS—Academic 2007 (Coelho Software)
53. Egerton, R. F. Electron Energy-Loss Spectroscopy in the Electron Microscope 2nd edn (Plenum Press, 1996).10.1007/978-1-4757-5099-7 ↗
54. Harris, R. K. et al. NMR nomenclature: Nuclear spin properties and conventions for chemical shifts: IUPAC recommendations 2001. Solid State Nucl. Magn. Reson. 22, 458–483 (2002).10.1006/snmr.2002.0063 ↗