주형법으로 제조된 Gd2O3:Eu3+ 적색 형광체의 나노입자 분산 및 형상제어

박정민; 반세민; 정경열; 최병기; 강광중; 김대성; Jeong Min Park; Se Min Ban; Kyeong-Youl Jung; Byung-Ki Choi; Kwang-Jung Kang; Dae-Sung Kim

Korean Journal of Materials Research, Vol.27, No.10, 534-543, October, 2017

DOI10.3740/MRSK.2017.27.10.534 Export Citation

주형법으로 제조된 Gd2O3:Eu3+ 적색 형광체의 나노입자 분산 및 형상제어

Dispersion and Shape Control on Nanoparticles of Gd2O3:Eu3+ Red Phosphor Prepared by Template Method

박정민, 반세민, 정경열 ¹, 최병기², 강광중², 김대성^†

한국세라믹기술원 에코복합소재센터
¹공주대학교
²㈜씨큐브

Jeong Min Park, Se Min Ban, Kyeong-Youl Jung¹, Byung-Ki Choi², Kwang-Jung Kang², and Dae-Sung Kim^†

Eco-composite Materials Center, Korea Institute of Ceramic Engineering & Technology(KICET), Jinju, Gyeongsangnam-do 52851, Republic of Korea
¹Department of Chemical Engineering, Kongju National University, Chungnam 31080, Republic of Korea
²CQV Co, Cheungcheongbuk-do 27845, Republic of Korea

E-mail:

Gd2O3:Eu3+ red phosphors were prepared by template method from crystalline cellulose impregnated by metal salt. The crystallite size and photoluminescence(PL) property of Gd2O3:Eu3+ red phosphors were controlled by varying the calcination temperature and Eu3+ mol ratio. The nano dispersion of Gd2O3:Eu3+ was also conducted with a bead mill wet process. Dependent on the time of bead milling, Gd2O3:Eu3+ nanosol of around 100 nm (median particle size : D50) was produced. As the bead milling process proceeded, the luminescent efficiency decreased due to the low crystallinity of the Gd2O3:Eu3+ nanoparticles. In spite of the low PL property of Gd2O3:Eu3+ nanosol, it was observed that the photoluminescent property was recovered after re-calcination. In addition, in the dispersed nanosol treated at 85 °C, a self assembly phenomenon between particles appeared, and the particles changed from spherical to rod-shaped. These results indicate that particle growth occurs due to mutual assembly of Gd(OH)3 particles, which is the hydration of Gd2O3 particles, in aqueous solvent at 85 °C.

Keywords:Gd2O3:Eu3+;red phosphor;nanosol;photoluminescence;dispersion & shape

[References]

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Lee HJ, Ban SM, Jung KY, Choi BK, Kang KJ, Kim DS, Korean J. Mater. Res., 27(2), 100 (2017)
Park MG, Kim H, Lim HM, Choi J, Kim DS, Korean J. Mater. Res., 26(3), 136 (2016)
Park MJ, Ahn JW, Kim H, Korean J. Ceram. Soc., 38, 343 (2001)
Song HJ, Noh JH, Roh HS, Kim JS, Kim DW, Hong KS, Curr. Appl. Phys., 13, S69 (2013)
Wei XT, Chen YH, Cheng XR, Yin M, Xu W, Appl. Phys. B-Lasers Opt., 99, 763 (2010)
Roh HS, Kim EJ, Kang HS, Kang YC, Park HD, Park SB, Jpn. J. Appl. Phys., 42, 2741 (2003)
Lin CC, Lin KM, Li YY, Nanotechnology, 1, 808 (2006)
de Moura AP, Oliveira LH, Nogueira IC, Pereira PFS, Li MS, Longo E, Varela JA, Rosa LV, Adv. Chem. Eng. Sci., 4, 374 (2014)
Flores-Gonzalez MA, Louis C, Bazzi R, Ledoux G, Lebbou K, Roux S, Perriat P, Tillement O, Appl. Phys. A-Mater. Sci. Process., 81, 1385 (2005)
Tamrakar RK, Bisen DP, Brahme N, Res. Chem. Intermed., 40, 1771 (2014)
Kang YC, Park SB, Lenggoro IW, Okuyama K, J. Phys. Chem. Solids, 60, 379 (1999)

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[3] Antic B, Rogan J, Kremenovic A, Nikolic AS, Vucinic-Vasic M, Bozanic DK, Goya CF, Colomban PH, Nanotechnology, 21, 1 (2010)

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