유리조성에 따른 백색 LED용 색변환 유리의 광특성

허철민; 황종희; 임태영; 김진호; 이미재; 유종성; 박태호; 문주호; Cheolmin Huh; Jonghee Hwang; Tae-Young Lim; Jin-Ho Kim; MiJai Lee; Jong-Sung Yoo; Tae-Ho Park; Jooho Moon

Korean Journal of Materials Research, Vol.22, No.12, 669-674, December, 2012

DOI10.3740/MRSK.2012.22.12.669 Export Citation

유리조성에 따른 백색 LED용 색변환 유리의 광특성

Effect of Glass Composition on the Optical Properties of Color Conversion Glasses for White LED

허철민^{1, 2}, 황종희 ^{1, †}, 임태영¹, 김진호 ¹, 이미재¹, 유종성³, 박태호³, 문주호²

¹한국세라믹기술원 광·디스플레이소재팀
²연세대학교 대학원 신소재 공학부
³㈜ 파티클로지

Cheolmin Huh^{1, 2}, Jonghee Hwang^{1, †}, Tae-Young Lim¹, Jin-Ho Kim¹, MiJai Lee¹, Jong-Sung Yoo³, Tae-Ho Park³, and Jooho Moon²

¹Korea Institute of Ceramic Engineering, &Technology (KICET), 77, 10-gil, Digital-ro, Geumcheon-gu, Seoul 153-801, Korea
²Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Korea
³Particlogy Co., Limited, Asan 336-873, Korea

E-mail:

Yellow phosphor dispersed color conversion glasses are promising phosphor materials for white LED applications because of their good thermal durability, chemical stability, and anti-ultraviolet property. Six color conversion glasses were prepared with high Tg and low Tg specimens of glass. Luminous efficacy, luminance, CIE (Commission Internationale de l'Eclairage) chromaticity, CCT (Correlated Color Temperature), and CRI (Color Rendering Index) of the color conversion glasses were analyzed according to the PL spectrum. Color conversion glasses with high Tg glass frit, sintered at higher temperature, showed better luminous properties than did color conversion glasses with low Tg glass frit. The characteristics of the color conversion glass depended on the glass composition rather than on the sintering temperature. The XRD peaks of the YAG phosphor disappeared in the color conversion glass with major components of B2O3-ZnO-SiO2-CaO and, in the XRD results, new crystalline peaks of BaSi2O5 appeared in the color conversion glass with major components of Bi2O3-ZnO-B2O3- MgO. The characteristics of CIE chromaticity, CCT, and the CRI of low Tg color conversion glasses showed worse color properties than those of high Tg color conversion glasses. However, these color characteristics of low Tg glasses were improved by thickness variation. So color conversion glasses with good characteristics of both luminous and color properties were attained.

Keywords:color conversion glass;white LED;glass frit;YAG phosphor

[References]

Nakamura S, Mukai T, Senoh M, Appl. Phys. Lett.
Schubert EF, Kim JK, Science, 308, 1274 (2005)
Saradhi MP, Varadaraju UV, Chem. Mater., 18, 5267 (2006)
Nishida T, Ban T, Kobayashi N, Appl. Phys. Lett., 82, 3817 (2003)
Steigerwald DA, Bhat JC, Collins D, Fletcher RM, Holcomb MO, Ludowise MJ, Martin PS, Rudaz SL, IEEE J. Sel. Top. Quantum Electron., 8, 310 (2002)
Sheu JK, Chang SJ, Kuo CH, Su YK, Wu LW, Lin YC, Lai WC, Tsai JM, Chi GC, Wu RK, IEEE Photon. Tech. Lett., 15, 18 (2003)
Hu R, Luo X, Feng H, Liu S, J. Lumin., 132, 1252 (2012)
Nishiura S, Tanabe S, Fujioka K, Fujimoto Y, Opt. Mater., 33, 688 (2011)
Fujita S, Tanabe S, Opt. Mater., 32, 886 (2010)
Fujita S, Umayahara Y, Tanabe S, J. Ceram. Soc. Jpn., 118(2), 128 (2010)
Segawa H, Ogata S, Hirosaki N, Inoue S, Shimizu T, Tansho M, Ohki S, Deguchi K, Opt. Mater., 33, 170 (2010)
Ohno Y, Proc. of SPIE, 5530, 88 (2004). doi:10.1117/12.565757. (2004)
Volf MB, Chemical Approach to Glass, p. 467, Elsevier, NY, USA (1984)
Chiu TL, LEE JH, Opt. Commun., 283, 373 (2010)

[Referenced By]

[Related Articles]

[1] Nakamura S, Mukai T, Senoh M, Appl. Phys. Lett.

[2] Schubert EF, Kim JK, Science, 308, 1274 (2005)

[3] Saradhi MP, Varadaraju UV, Chem. Mater., 18, 5267 (2006)

[4] Nishida T, Ban T, Kobayashi N, Appl. Phys. Lett., 82, 3817 (2003)

[5] Steigerwald DA, Bhat JC, Collins D, Fletcher RM, Holcomb MO, Ludowise MJ, Martin PS, Rudaz SL, IEEE J. Sel. Top. Quantum Electron., 8, 310 (2002)

[6] Sheu JK, Chang SJ, Kuo CH, Su YK, Wu LW, Lin YC, Lai WC, Tsai JM, Chi GC, Wu RK, IEEE Photon. Tech. Lett., 15, 18 (2003)

[7] Hu R, Luo X, Feng H, Liu S, J. Lumin., 132, 1252 (2012)

[8] Nishiura S, Tanabe S, Fujioka K, Fujimoto Y, Opt. Mater., 33, 688 (2011)

[9] Fujita S, Tanabe S, Opt. Mater., 32, 886 (2010)

[10] Fujita S, Umayahara Y, Tanabe S, J. Ceram. Soc. Jpn., 118(2), 128 (2010)

[11] Segawa H, Ogata S, Hirosaki N, Inoue S, Shimizu T, Tansho M, Ohki S, Deguchi K, Opt. Mater., 33, 170 (2010)

[12] Ohno Y, Proc. of SPIE, 5530, 88 (2004). doi:10.1117/12.565757. (2004)

[13] Volf MB, Chemical Approach to Glass, p. 467, Elsevier, NY, USA (1984)

[14] Chiu TL, LEE JH, Opt. Commun., 283, 373 (2010)