Photoluminescence properties of Mn4+-activated Li2ZnSn2O6 red phosphors
0
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
The Mn4+-activated Li2ZnSn2O6 (LZSO:Mn4+) red phosphors were synthesized by the solid-state reaction at temperatures of1100-1400 oC in air. The synthesized LZSO:Mn4+ phosphors were confirmed to have a single hexagonal LZSO phase withoutthe presence of any secondary phase formed by the Mn4+ addition. With near UV and blue excitation, the LZSO:Mn4+phosphors exhibited a double band deep-red emission peaked at ~658 nm and ~673 nm due to the 2E→4A2 transition of Mn4+ion. PL emission intensity showed a strong dependence on the Mn4+ doping concentration and the 0.3 mol% Mn4+-dopedLZSO phosphor produced the strongest PL emission intensity. Photoluminescence emission intensity was also found to bedependent on the calcination temperature and the optimal calcination temperature for the LZSO:Mn4+ phosphors wasdetermined to be 1200 oC. Dynamic light scattering (DLS) and field-effect scanning electron microscopy (FE-SEM) analysisrevealed that the 0.3 mol% Mn4+-doped LZSO phosphor particles have an irregularly round shape and an average particlesize of ~1.46 μm.
Abstract
The Mn4+-activated Li2ZnSn2O6 (LZSO:Mn4+) red phosphors were synthesized by the solid-state reaction at temperatures of1100-1400 oC in air. The synthesized LZSO:Mn4+ phosphors were confirmed to have a single hexagonal LZSO phase withoutthe presence of any secondary phase formed by the Mn4+ addition. With near UV and blue excitation, the LZSO:Mn4+phosphors exhibited a double band deep-red emission peaked at ~658 nm and ~673 nm due to the 2E→4A2 transition of Mn4+ion. PL emission intensity showed a strong dependence on the Mn4+ doping concentration and the 0.3 mol% Mn4+-dopedLZSO phosphor produced the strongest PL emission intensity. Photoluminescence emission intensity was also found to bedependent on the calcination temperature and the optimal calcination temperature for the LZSO:Mn4+ phosphors wasdetermined to be 1200 oC. Dynamic light scattering (DLS) and field-effect scanning electron microscopy (FE-SEM) analysisrevealed that the 0.3 mol% Mn4+-doped LZSO phosphor particles have an irregularly round shape and an average particlesize of ~1.46 μm.
참고문헌 (19)
- R. Cao, , Opt. Exp, 20, pp.A977~A983 (2012)
- K. Takahashi, , Appl. Phys. Lett, 91, pp.091923-1~091923-3 (2007)
- Y. Hu, , J. Lumin, 111, pp.139~145 (2005)
- S. Nakamura, "The Blue Laser Diode: GaN Based Light Emitters and Lasers", pp.1~24 (1996), Springer
- Q. Sai, , J. Lumin, 131, pp.2359~2364 (2011)
- T. Murate, , J. Luminescence, 114, pp.207~212 (2005)
- R. Cao, , Opt. Mater, 38, pp.53~56 (2014)
- L. Chen, , J. Alloy Compd, 613, pp.22905~22913 (2014)
- K. Sekigawa, "Enhancement of the luminescence efficiency of Li2TiO3:Mn4+ red emitting phosphor for white LEDs", Journal of Ceramic Processing Research, 14, pp.67~70 (2013), 청정에너지연구소[DOI]
- Y. Lin, , Chem. Eng. J, 288, pp.596~607 (2016)
- Y. Takeda, , Chem. Lett, 44, pp.1541~1543 (2015)
- L. L. Wei, , ACS Appl. Mater. Interfaces, 7, pp.10656~10659 (2015)
- Q. Zhou, , J. Mater. Chem. C, 3, pp.9615~9619 (2015)
- Y. Jin, , ACS Appl. Mater. Interfaces, 8, pp.11194~11203 (2016)
- R. D. Shannon, , Acta Crystallogr. A, 32, pp.751~767 (1976)
- M. H. Du, , J. Mater. Chem. C, 2, pp.2475~2481 (2014)
- R. Cao, , J. Luminescence, 197, pp.169~174 (2018)
- R. Cao, , Opt. Mater, 53, pp.169~173 (2016)
- W. Shen, , Mater. Lett, 161, pp.140~143 (2015)