Synthesis and luminescence properties of red lutetium based phosphors using a general precursor obtained by homogeneous precipitation
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
A general precursor of Lu2O2SO4 and Lu2O2S was synthesized by homogeneous precipitation methods using commerciallyavailable Lu2O3, H2SO4, Eu(NO3)3·6H2O, CO(NH2)2, NH3·H2O, Na2CO3 and S as the main raw materials, and thenLu2O2SO4:Eu3+ is calcined under air atmosphere at different temperatures, which simplified the previous experimental steps. On this basis, a series of Eu3+ doped Lu2O2S phosphors were synthesized by the solid phase method using the precursor asraw material by mixing sodium carbonate and sublimated sulfur. Lu2O2SO4:Eu3+ and Lu2O2S:Eu3+ quasi-sphericalluminescent powder with particle sizes of about 1 μm were synthesized and their synthetic mechanism and photoluminescenceproperties were investigated. Finally, the synthesized products were characterized by X-ray powder diffraction (XRD), fieldemission scanning electron microscope (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), differential scanningcalorimeter (DSC-TG), photoluminescence spectroscopy (PL) and other analytical and testing methods. Studies have shownthat the optimum calcination conditions of Lu2O2SO4:x%Eu3+ phosphors and Lu2O2S:x%Eu3+ phosphors are at 800 ℃ for2 h in air and at 500 ℃ for 2 h in a closed sulphuration atmosphere, respectively. On this basis, the photoluminescence (PL)behavior of the two prepared fluorescent powders was analyzed. At approximately 618 nm and 628 nm, lutetium basedoxysulfate and oxysulfide phosphors exhibit typical red emission, which is the main luminescent feature of Eu3+, originatingfrom the 5D0-7F2 transition of Eu3+.The CIE color coordinates of the Lu2O2SO4:Eu3+ and Lu2O2S:Eu3+ phosphors correspondto (0.6573, 0.3423) and (0.621, 0.3769), respectively, and their colors are red-orange and orange light. The optimal dopingconcentration was determined to be 7.5%. The fluorescence lifetime of Lu2O2SO4:7.5%Eu3+ and Lu2O2S:7.5%Eu3+ phosphorsobtained by homogeneous precipitation method is 2.4479 ms and 1.004 ms. The CCT values are 2886 K and 1863 K, whichbelong to low penetration CCT light. They all have short afterglow life, and lutetium oxysulfate phosphor has longerfluorescence life than lutetium oxysulfide phosphor.
Abstract
A general precursor of Lu2O2SO4 and Lu2O2S was synthesized by homogeneous precipitation methods using commerciallyavailable Lu2O3, H2SO4, Eu(NO3)3·6H2O, CO(NH2)2, NH3·H2O, Na2CO3 and S as the main raw materials, and thenLu2O2SO4:Eu3+ is calcined under air atmosphere at different temperatures, which simplified the previous experimental steps. On this basis, a series of Eu3+ doped Lu2O2S phosphors were synthesized by the solid phase method using the precursor asraw material by mixing sodium carbonate and sublimated sulfur. Lu2O2SO4:Eu3+ and Lu2O2S:Eu3+ quasi-sphericalluminescent powder with particle sizes of about 1 μm were synthesized and their synthetic mechanism and photoluminescenceproperties were investigated. Finally, the synthesized products were characterized by X-ray powder diffraction (XRD), fieldemission scanning electron microscope (FE-SEM), Fourier transform infrared spectroscopy (FT-IR), differential scanningcalorimeter (DSC-TG), photoluminescence spectroscopy (PL) and other analytical and testing methods. Studies have shownthat the optimum calcination conditions of Lu2O2SO4:x%Eu3+ phosphors and Lu2O2S:x%Eu3+ phosphors are at 800 ℃ for2 h in air and at 500 ℃ for 2 h in a closed sulphuration atmosphere, respectively. On this basis, the photoluminescence (PL)behavior of the two prepared fluorescent powders was analyzed. At approximately 618 nm and 628 nm, lutetium basedoxysulfate and oxysulfide phosphors exhibit typical red emission, which is the main luminescent feature of Eu3+, originatingfrom the 5D0-7F2 transition of Eu3+.The CIE color coordinates of the Lu2O2SO4:Eu3+ and Lu2O2S:Eu3+ phosphors correspondto (0.6573, 0.3423) and (0.621, 0.3769), respectively, and their colors are red-orange and orange light. The optimal dopingconcentration was determined to be 7.5%. The fluorescence lifetime of Lu2O2SO4:7.5%Eu3+ and Lu2O2S:7.5%Eu3+ phosphorsobtained by homogeneous precipitation method is 2.4479 ms and 1.004 ms. The CCT values are 2886 K and 1863 K, whichbelong to low penetration CCT light. They all have short afterglow life, and lutetium oxysulfate phosphor has longerfluorescence life than lutetium oxysulfide phosphor.
참고문헌 (31)
- X. J. Wang, , J. Am. Ceram. Soc, 101(12), pp.5477~5486 (2018)
- X. Li, , Mater. Tehnol, 56(6), pp.669~676 (2022)
- M. Machida, , Chem. Mater, 15(4), pp.954~960 (2007)
- Jingbao Lian, "Homogeneous precipitation synthesis and photolumi-nescence properties of La2O2 SO4 : Eu3+ quasi-spherical phosphors", Journal of Ceramic Processing Research, 15(6), pp.382~388 (2014), 청정에너지연구소[DOI]
- Jingbao Lian, "Synthesis of Gd2O2S : Eu3+ hollow sphere by a hydrothermal method assisting with reduction route", Journal of Ceramic Processing Research, 17(7), pp.752~757 (2016), 청정에너지연구소[DOI]
- L. X. Song, , Mater. Res. Bull, 48(11), pp.4896~4900 (2013)
- G. X. Xu, , Key Eng. Mater, 807, pp.1~10 (2019)
- L. X. Song, , J. Lumin, 150, pp.50~54 (2014)
- J. B. Lian, , Powder Technol, 253, pp.187~192 (2014)
- D. L. Geng, , Dalton Trans, 41(10), pp.3078~3086 (2012)
- R. Manigandan, , RSC Adv, 5(10), pp.7515~7521 (2014)
- J. B. Lian, , Optik, 127(20), pp.8621~8628 (2016)
- Fan Liu, "Hydrothermal synthesis combined with calcination of Gd2O2SO4 : Yb3+,Er3+ nanoparticles and their up-conversion luminescence", Journal of Ceramic Processing Research, 17(12), pp.1287~1291 (2016), 청정에너지연구소[DOI]
- X. Li, , Optik, 127(1), pp.401~406 (2016)
- I. Aritman, , J. Australas. Ceram. Soc, 53, pp.457~463 (2017)
- G. X. Xu, , J. Ceram. Sci. Technol, 9(3), pp.345~352 (2018)
- X. T. Sang, , Polyhedron, 169, pp.114~122 (2019)
- R. V. Rodrigues, , Luminescence, 35(8), pp.1254~1263 (2020)
- M. Y. Liu, , Solid State Sci, 112, pp.106520~ (2021)
- K. Okazaki, , Radiat. Meas, 154, pp.106773~ (2022)
- L. Q. Liu, , Nanotechnology, 18(1), pp.015403~ (2007)
- J. J. Zhao, , J. Alloys Compd, 436(1-2), pp.174~177 (2007)
- J.J. Zhao, , J. Lumin, 122-123, pp.924~926 (2007)
- Q. Zhao, , CrystEngComm, 14, pp.6659~6664 (2012)
- G. W. Wang, , Mater. Lett, 128, pp.256~258 (2014)
- G. W. Wang, , Opt. Mater, 45, pp.131~135 (2015)
- B. W. Zhang, , RSC Adv, 6(10), pp.7846~7853 (2016)
- N. Pasberg, , Dalton T, 46(24), pp.7693~7707 (2017)
- X. X. Xu, , J. Lumin, 215, pp.116702~ (2019)
- M. Y. Liu, , Polyhedron, 210, pp.115527~ (2021)
- Xing Li, "Lamellar La2O2SO4:Eu3+ phosphor and its conversion to rice ear-like La2O2S:Eu3+ nanophosphor by a reduction step", Journal of Ceramic Processing Research, 23(5), pp.709~715 (2022), 청정에너지연구소[DOI]