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Luminescence Characterization of SrAl2O4:Ho3+ Green Phosphor Prepared by Spray Pyrolysis
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  • Journal title : Korean Chemical Engineering Research
  • Volume 53, Issue 5,  2015, pp.620-626
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2015.53.5.620
 Title & Authors
Luminescence Characterization of SrAl2O4:Ho3+ Green Phosphor Prepared by Spray Pyrolysis
Jung, Kyeong Youl; Kim, Woo Hyun;
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 Abstract
doped upconversion phosphor powders were synthesized by spray pyrolysis, and the crystallographic properties and luminescence characteristics were examined by varying activator concentrations and heattreatment temperatures. The effect of organic additives on the crystal structure and luminescent properties was also investigated. powders showed intensive green emission due to the transition of . The optimal concentration in order to achieve the highest luminescence was 0.1%. Over this concentration, emission intensities were largely diminished via a concentration quenching due to dipole-dipole interaction between activator ions. According to the dependence of emission intensity on the pumping power of a laser diode, it was clear that the upconversion of occurred via the ground state absorption-excited state absorption processes involving two near-IR photons. Synthesized powders were monoclinic as a major phase, having some hexagonal phase. The increase of heat-treatment temperatures from to led to crystallinity enhancement of monoclinic phase, reducing hexagonal phase. The hexagonal phase, however, did not disappear even at . When both citric acid (CA) and ethylene glycol (EG) were added to the spray solution, the resulting powders had pure monoclinic phase without forming hexagonal phase, and led to largely enhancement of crystallinity. Also, N,N-Dimethylformamide (DMF) addition to the spray solution containing both CA and EG made it possible to effectively reduce the surface area of powders. Consequently, the powders prepared by using the spray solution containing CA/EG/DMF mixture as the organic additives showed about 168% improved luminescence compared to the phosphor prepared without organic additives. It was concluded that both the increased crystallinity of high-purity monoclinic phase and the decrease of surface area were attributed to the large enhancement of upconversion luminescence.
 Keywords
Upconversion;Phosphor;Luminescence;;Spray Pyrolysis;
 Language
Korean
 Cited by
 References
1.
Hasse, M. and Schafer, H., "Upconverting Nanoparticles," Angw. Chem. Int. Ed., 50, 5808-5829(2011). crossref(new window)

2.
Li, X., Zhang, F. and Zhao D., "Highly Efficient Lanthanide Upconverting Nanomaterials: Progress and challenges," Nano Today, 8, 643-676(2013). crossref(new window)

3.
DaCosta, M. V., Doughan, S., Han, Y. and Krull, U. J., "Lanthanide Upconversion Nanoparticles and Application in Bioassays and Bioimaging: A Review," Anal. Chim. Acta, 832, 1-33(2014). crossref(new window)

4.
Sun, Q.-C., Mundoor, H., Ribot, J. C., Singh, V., Smalyukh, I. I. and Nagpal, P., "Plasmon-enhanced Energy Transfer for Improved Upconversion of Infrared Radiation in Doped-lanthanide Nanocrystals," Nano Lett., 14, 101-106(2014). crossref(new window)

5.
Auzel F., "Upconversion and Anti-stokes Processes with f and d ions in Solids," Chem. Rev., 104, 139-173(2004). crossref(new window)

6.
Jiao, Y., Gao, X., Lu, J., Chen, Y., He, W., Chen, X., Li, X. and Li, R., "Hydrothermal Synthesis of the Intense Green Photoluminescence of Hexagonal Phase $NaYF_4$:$Yb^{3+}$/$Er^{3+}$ Microcrystals," J. Alloys Comp., 549, 245-253(2013). crossref(new window)

7.
Zeng, J.-H., Su, J., Li, Z.-H., Yan, R.-X. and Li, Y.-D., "Synthesis and Upconversion Luminescence of Hexagonal-phase $NaYF_4$:Yb,$Er^{3+}$ Phosphors of Controlled Size and Morphology," Adv. Mater., 17, 2119-2123(2005). crossref(new window)

8.
Wang, Z., Gu, F., Wang, Z. and Han, D., "Solvothermal Synthesis of $CeO_2$:Er/Yb Nanorods and Upconversion Luminescence Charac-terization," Mater. Res. Bull., 53, 141-144(2014). crossref(new window)

9.
Joshi, C., Rai, A., Dwivedi, Y. and Rai, S. B., "Color Tunable Emission from $(Gd_xY_{1-x})_2O_3$:$Er^{3+}$,$Yb^{3+}$ Phosphor Prepared by Combustion Method," J. Lumin., 132, 806-810(2012). crossref(new window)

10.
Singh, V., Rai, V. K., Al-Shamery, K., Haase, M. and Kim S. H., "NIR to Visible Frequency Upconversion in $Er^{3+}$ and $Yb^{3+}$ Codoped $ZrO_2$ Phosphor," Appl. Phys. A, 113, 747-753(2013). crossref(new window)

11.
Das, S., Reddy, A. A. and Prakash, G. V., "Strong Green Upconversion Emission from $Er^{3+}$-$Yb^{3+}$ co-doped $KCaBO_3$ Phosphor," Chem. Phys. Lett., 504, 206-210(2011). crossref(new window)

12.
Shin, H., Ullah, S. and Chung K., "Effect of Nominal Substitution of $Dy^{3+}$ for Host Cations in $SrAl_2O_4$:$Eu^{2+}$ Phosphor on Phase Evolution and Long Afterglow Luminescence," J. Alloys Comp., 544, 181-187(2012). crossref(new window)

13.
Clabau, F., Rocquefelte, X., Jobic, S., Deniard, P., Whangbo, M.-H., Garcia, A. and Mercier, T. L., "Mechanism of Phosphorescence Appropriate for the Long-lasting Phosphors $Eu^{2+}$-doped $SrAl_2O_4$ with Codopants $Dy^{3+}$ and $B^{3+}$," Chem. Mater., 17, 3904-3912(2005). crossref(new window)

14.
Chen, I.-C. and Chen, T.-M., "Sol-gel Synthesis and the Effect of Boron Addition on the Phosphorescent Properties of $SrAl_2O_4$: $Eu^{2+}$,$Dy^ {3+}$ Phosphors," J. Mater. Res., 16, 644-651(2001). crossref(new window)

15.
Rakov, N. G. and Maciel, G. S., "Infrared-to-visible Frequency Upconversion in $SrAl_2O_4$ Powders Containing $Er^{3+}$ and $Yb^{3+}$," Appl. Phys. B, 98, 435-438(2010).

16.
Kim, J. H. and Jung, K. Y., "Preparation and Luminescence Characterization of Find-sized $LaSr_2AlO_5$:Ce Phosphor Prepared by Spray Pyrolysis," J. Lumin., 131, 1487-1491(2011). crossref(new window)

17.
Cho, J. S., Lee, S. M., Jung, K. Y. and Kang, Y. C., "Large-scale Production of Fine-sized $Zn_2SiO_4$:Mn Phosphor Microspheres with a Dense Structure and Good Photoluminescence Properties by a Spray-drying Process," RSC Adv., 4, 43606-43611(2014). crossref(new window)

18.
Jung, K. Y., Lee, H. W., Kang, Y. C., Park, S. B. and Yang, Y. S., "Luminescent Properties of (Ba, Sr)$MgAl_{10}O_{17}$:Mn,Eu Green Phosphor Prepared by Spray Pyrolysis Under VUV Excitation," Chem. Mater., 17, 2729-2734(2005). crossref(new window)

19.
Jung, K. Y., Lee, H. W. and Jung, H. K., "Luminescent Properties of (Sr,Zn)$Al_2O_4$:$Eu^{2+}$,$B^{3+}$ Particles as a Potential Green Phosphor for UV LEDs," Chem. Mater., 18, 2249-2255(2006). crossref(new window)

20.
Jung, K. Y., Lee, D. Y., Kang, Y. C. and Park, S. B., "Size-dependent Luminescent Properties of Hollow and Dense Ba$MgAl_{10}O_{17}$:Eu Blue Phosphor Particles Prepared by Spray Pyrolysis," Korean J. Chem. Eng., 21, 1072-1080(2004). crossref(new window)

21.
Kim, M. N. and Jung, K. Y., "Synthesis and Luminescence Enhancement of Strontium Aluminate Green Phosphor Via Spray Pyrolysis," Korean Chem. Eng. Res., 49, 594-599(2011). crossref(new window)

22.
Henderson, C. M. B. and Taylor, D., "The structural Behavior of the Nepheline Family: (1) Sr and Ba Aluminate ($Mal_2O_4$)," Miner. Mag., 45, 111-127(1982). crossref(new window)

23.
Wang, D., Yin Q., Li, Y. and Wang, M., "Concentration Quenching of $Eu^{2+}$ in $SrO6Al_2O_3$:$Eu^{2+}$ Phosphor," J. Mater. Sci., 37, 381-393(2002). crossref(new window)

24.
Jung, K. Y. and Jung, H.-K., "Luminescence Optimization of Eudoped $LnAl_3(BO_3)_4$ (Ln=Y, Gd) Red Phosphor Using Spray Pyrolysis," J. Lumin., 130, 1970-1974(2010). crossref(new window)

25.
Wang, D., Yin, Q., Li, Y. and Wang, M., "Concentration Quenching of $Eu^{2+}$ in $SrOAl_2O_3$:$Eu^{2+}$ Phosphor," J. Lumin., 97, 1-6(2002). crossref(new window)