Visible up-conversion luminescence of CaWO4 : Er3+,Yb3+ and emission enhancement by tri-doping of Li+ ions

Do-Hwan Kim; Jeong Ho Ryu; Jun Ho Chung; Jong Won Eun; Kwang Bo Shim; Sung-Yong Cho

Korean Journal of Chemical Engineering, Vol.29, No.4, 519-524, April, 2012

DOI10.1007/s11814-011-0196-0 Export Citation

Visible up-conversion luminescence of CaWO4 : Er3+,Yb3+ and emission enhancement by tri-doping of Li+ ions

Do-Hwan Kim, Jeong Ho Ryu^{1, †}, Jun Ho Chung², Jong Won Eun², Kwang Bo Shim², and Sung-Yong Cho

Department of Environmental Engineering, Chonnam National Univeristy, 77, Yongbong-ro, Gwangju 500-757, Korea
¹Department of Materials Science and Engineering, Chungju National University, 50, Daehak-ro, Chungju-si, Chungbuk 380-702, Korea
²Department of Materials Science and Engineering, Hanyang University, 17, Haengdang-dong, Seongdong-gu, Seoul 133-791, Korea

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Er3+,Yb3+ co-doped CaWO4 polycrystalline powders were prepared by a solid-state reaction and their upconversion (UC) luminescence properties were investigated in detail. Under 980 nm laser excitation, CaWO4 : Er3+,Yb3+ powder exhibited green UC emission peaks at 530 and 550 nm, which were due to the transitions of Er3+ (2H11/2)→Er3+(4I15/2) and Er3+ (4S3/2)→Er3+ (4I15/2), respectively. Effects of Li+ tri-doping into CaWO4 : Er3+,Yb3+ were investigated. The introduction of Li+ ions reduced the optimum calcinations temperature about 100℃ by a liquid-phase sintering process and the UC emission intensity was remarkably enhanced by Li+ ions, which could be attributed to the lowering of the symmetry of the crystal field around Er3+ ions.

Keywords:UC (Up-conversion) Luminescence;CaWO4 : Er3+,Yb3+;Solid-state Reaction Method;Li+ Tri-doping

[References]

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[Referenced By]

[1] Downing E, Hesselink L, Ralston J, Macfarlane R, Science, 273(5279), 1185 (1996)

[2] Chen GY, Liu Y, Zhang YG, Somefalean G, Zhang ZG, Sun Q, Wang FP, Appl. Phys. Lett., 91, 133103 (2007)

[3] Liu F, Ma E, Chen DQ, Yu YL, Wang YS, J. Phys. Chem., B110, 20843 (2006)

[4] Wang X, Kong XG, Yu Y, Sun YJ, Zhang H, J. Phys. Chem., C111, 15119 (2007)

[5] Wang LY, Li YD, Chem. Commun., 16, 2557 (2006)

[6] Vetrone F, Boyer JC, Capobianco JA, Speghini A, Bettinelli M, J. Phys. Chem., B106, 8622 (2002)

[7] Takahashi M, Lzuki M, Kanno F, Kawamoto Y, J. Appl. Phys., 83, 3920 (1998)

[8] Zhou K, Moshary F, Gross M, Aark MF, Ahmed GA, J.Appl. Phys., 96, 237 (2004)

[9] Gercia AS, Serna R, Castrc MJ, Afonso CN, Appl. Phys.Lett., 84, 2151 (2004)

[10] Heer S, Kompe K, Gudel HU, Haase M, Adv. Mater., 16(23-24), 2102 (2004)

[11] Liu C, Chen D, J. Mater. Chem., 17, 3875 (2007)

[12] Ehlert O, Thomann R, Darbandi M, Nann T, ACS Nano., 2, 120 (2008)

[13] Wang F, Liu X, Chem. Soc. Rev., 38, 976 (2009)

[14] Bardelli L, Bini M, Bizzeti P, Nucl. Instrum. Meth., A569, 743 (2006)

[15] Uitert L, Preziosi S, J. Appl. Phys., 33, 2908 (1962)

[16] Wang H, Medina F, Zhou Y, Zhang Q, Phys. Rev., B45, 10356 (1992)

[17] Kim DY, Kim SJ, Yeo MK, Jung IG, Kang MS, Korean J. Chem. Eng., 26(1), 261 (2009)

[18] Lou Z, Hao J, Cocivera M, J. Lumin., 99, 349 (2002)

[19] Treadaway MJ, Powell RC, J. Chem. Phys., 61, 4003 (1974)

[20] Grasser R, Scharmann A, Strack KR, J. Lumin., 27, 263 (1982)

[21] Johnson LF, Thomas RA, Phys. Rev., 131, 2038 (1963)

[22] Vetrone F, Boyer JC, Capobianco JA, Speghini A, Bettinelli M, Chem. Mater., 15, 2737 (2003)

[23] Gerner P, Gudel HU, Chem. Phys. Lett., 413(1-3), 105 (2005)

[24] Vetrone F, Boyer JC, Capobianco JA, Speghini A, Bettinelli M, J. Phys. Chem., B107, 1107 (2003)

[25] Guo H, Dong N, Yin M, Zhang W, Loua L, Xia S, J. Alloy.Compd., 415, 280 (2006)

[26] Hatayama T, Fukumoto S, Ibuki S, Jpn. J. Appl. Phys., 31, 3383 (1992)

[27] Chen G, Liu H, Liang H, Somesfalean G, Zhang Z, J. Phys.Chem., C112, 12030 (2008)

[28] Chen X, Liu Z, Sun Q, Ye M, Wang F, Opt. Comm., 284, 2046 (2011)

[29] Yoon MJ, In JH, Lee HC, Lee CH, Korean J. Chem. Eng., 23(5), 842 (2006)

[30] Wang Y, Chen Y, Cheng S, He L, Korean J. Chem. Eng., 28(3), 964 (2011)

[31] Dai Q, Song H, Ren X, Lu S, Pan G, Bai X, Dong B, Qin R, Qu X, Zhang H, J. Phys. Chem., C112, 19694 (2008)

[32] Shannon RD, Acta Cryst., A32, 751 (1976)

[33] Luo XX, Cao WH, J. Mater. Res., 23, 2078 (2008)

[34] Luo XX, Cao WH, Sci. China Ser., B-Chem., 50, 505 (2007)

[35] Riseberg LA, Moos HW, Phys. Rev., 174, 429 (1968)