Preparation and characterization of Li0.25Sr0.5(MoO4):Eu 0.25 3+ red-emitting phosphors for white LEDs by organic gel-thermal decomposition process
Source abstract
Abstract
Li0.25Sr0.5(MoO4):Eu0.253+ red-emitting phosphors were prepared by the organic gel-thermal decomposition process with metal salts and citric acid as starting reagents. X-ray diffraction, scanning electron microscopy and photoluminescent spectroscopy were used to characterize the as-prepared phosphors. The Li0.25Sr0.5(MoO4):Eu0.253+ phase consisting of nanosized crystallites is formed at 400 °C and the nanosized crystallites with a tetragonal-dipyramid morphology increase with the calcination temperature and time. During the early period at 650 °C, the microstructure of the Li0.25Sr0.5(MoO4):Eu0.253+ crystallites are unstable and the re-crystallization for some particles takes place with a particle morphological modification. The optimized calcination conditions for the Li0.25Sr0.5(MoO4):Eu0.253+ phosphors are 650 °C for 13 h. The Li0.25Sr0.5(MoO4):Eu0.253+ phosphors with particle sizes about 0.5 to 2.0 μm obtained under the optimized conditions can be excited by the ultraviolet light 395 nm and blue light 466 nm, which are well met with the requirements for the current commercial near-UV and blue LEDs, and exhibit a high emission performance.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Lanthanide and Transition Metal Complexes · Inorganic Chemistry and Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
Show source-provided references
1. Shao QY, Li HJ, Wu KW, Dong Y, Jiang JQ (2009) J Lumin 129:879–88310.1016/j.jlumin.2009.03.016 ↗
2. Guo CF, Chen T, Luan L, Zhang W, Huang DX (2008) J Phys Chem Solids 69:1905–191110.1016/j.jpcs.2008.01.021 ↗
3. Thomas M, Rao PP, Deepa M, Chandran MR, Koshy P (2009) J Solid State Chem 182:203–20710.1016/j.jssc.2008.10.015 ↗
4. Guo CF, Zhang W, Luan L, Chen T, Cheng H, Huang DX (2008) Sens Actuators B Chem 133:33–3910.1016/j.snb.2008.01.065 ↗
5. Guo CF, Gao F, Liang LF, Choi BC, Jeong JH (2009) J Alloys Compd 479:607–61210.1016/j.jallcom.2009.01.019 ↗
6. Yi LH, He XP, Zhou LY, Gong FZ, Wang RF, Sun JH (2010) J Lumin 130:1113–111710.1016/j.jlumin.2010.02.006 ↗
7. Zhou LY, Wei JS, Wu JR, Gong FZ, Yi LH, Huang JL (2009) J Alloys Compd 476:390–39210.1016/j.jallcom.2008.09.005 ↗
8. Wang ZL, Liang HB, Gong ML, Su Q (2007) Opt Mater 29:896–90010.1016/j.optmat.2005.12.010 ↗
9. Kim JS, Jeon PE, Park YH, Choi JC, Park HL (2004) Appl Phys Lett 85:369610.1063/1.1808501 ↗
10. Zeng QH, He P, Pang M, Liang HB, Gong ML, Su Q (2009) Solid State Commun 149:880–88310.1016/j.ssc.2009.02.056 ↗
11. Wang ZL, Liang HB, Wang J, Gong ML, Su QL (2008) Mater Res Bull 43:907–91110.1016/j.materresbull.2007.04.037 ↗
12. Hu YS, Zhuang WD, Ye HQ, Wang DH, Zhang SS, Huang XW (2005) J Alloys Compd 390:226–22910.1016/j.jallcom.2004.07.063 ↗
13. Wang ZL, Liang HB, Zhou LY, Wang J, Gong ML, Su Q (2008) J Lumin 128:147–15410.1016/j.jlumin.2007.07.001 ↗
14. Haque M, Lee HI, Kim DK (2009) J Alloys Compd 481:792–79610.1016/j.jallcom.2009.03.083 ↗
15. Hufner S (1978) Optical spectra of transparent rare earth compounds. Academic Press, New York
16. Sabbatini NS, Guardigli M, Lehn MJ (1993) Coord Chem Rev 123:20110.1016/0010-8545(93)85056-A ↗
17. Neeraj S, Kijima N, Cheetham AK (2004) Chem Phys Lett 387:2–610.1016/j.cplett.2003.12.130 ↗
18. Tang ZW, Zhou LQ, Wang F, Zhou LR (2009) Spectrochim Acta A 72:348–35510.1016/j.saa.2008.10.010 ↗
19. Wang ZL, Liang HB, Gong ML, Su Q (2008) Mater Lett 62:619–62210.1016/j.matlet.2007.06.021 ↗
20. Wang JG, Jing XP, Yan CH, Lin JH, Liao FH (2006) J Lumin 121:57–6110.1016/j.jlumin.2005.10.003 ↗
21. Wang XX, Xian YL, Wang G, Shi JX, Su Q, Gong ML (2007) Opt Mater 30:521–52610.1016/j.optmat.2007.01.006 ↗
22. Zhou LY, Wei JS, Yi LH, Huang JL, Gong FZ (2009) J Rare Earth 27:353–356
23. Yang YL, Li XM, Feng WL, Li WL, Tao CY (2010) J Alloys Compd 505:239–24210.1016/j.jallcom.2010.06.037 ↗
24. Sun LG, Guo QR, Wu XL, Luo SJ, Pan WL, Huang KL, Lu JF, Ren L, Cao MH, Hu CW (2007) J Phys Chem C 111:532–53710.1021/jp064923d ↗
25. Chiu CH, Wang MF, Lee CH, Chen TM (2007) J Solid State Chem 180:619–62710.1016/j.jssc.2006.11.015 ↗
26. Xie A, Yuan XM, Hai SJ, Wang JJ, Wang FX, Li L (2009) J Phys D Appl Phys 42:10510710.1088/0022-3727/42/10/105107 ↗
27. Bhaktha BS, Kinowski C, Bouazaoui M, Capoen B, Robbe-Cristini O, Beclin F, Roussel P, Ferrari M, Turrell S (2009) J Phys Chem C 113:21555–2155910.1021/jp907764p ↗
28. Lei F, Yan B (2008) J Solid State Chem 181:855–86210.1016/j.jssc.2008.01.033 ↗
29. Chen D, Shen GZ, Tang KB, Liang ZH, Zheng HG (2004) J Phys Chem B 108:11280–1128410.1021/jp0377681 ↗