자외선 여기용 청색 및 황색 형광체의 발광특성
作者：
DOI: 10.4191/KCERS.2006.43.5.304
关键词: Analytical chemistry 、 LED lamp 、 Spontaneous emission 、 Optical transition 、 Optoelectronics 、 Active layer 、 Luminescence 、 Light-emitting diode 、 Phosphor 、 Materials science 、 Chromaticity
摘要: We have synthesized a Eu 2+ -activated Sr₃MgSi₂O 8 blue phosphor and (Sr,Ba)₂SiO₄ yellow prepared white LEDs by combining these phosphors with InGaN UV LED chip. Three distinct emission bands from the InGaN-based two are clearly observed at 405 nm, 460 around 560 respectively. The nm band is due to radiative recombination active layer. This was used as an optical transition of :Eu (Sr,Ba)₂SiO₄:Eu phosphor. ascribed impurity ions in host matrix. As consequence preparation White lamp using phosphor, highest luminescence efficiency obtained ration epoxy/two (1/0.2361). At this time, CIE chromaticity x=0.3140, y=0.3201 CCT (6500 K).
koreascience.or.kr参考文章(11)
Thomas L. Barry, Equilibria and Eu2+ Luminescence of Subsolidus Phases Bounded by Ba3MgSi2 O 8, Sr3MgSi2 O 8, and Ca3MgSi2 O 8 Journal of The Electrochemical Society. ,vol. 115, pp. 733- 738 ,(1968) , 10.1149/1.2411413
S.H.M. Poort, W. Janssen, G. Blasse, Optical properties of Eu2+-activated orthosilicates and orthophosphates Journal of Alloys and Compounds. ,vol. 260, pp. 93- 97 ,(1997) , 10.1016/S0925-8388(97)00140-0
Jianrong Qiu, K Miura, N Sugimoto, K Hirao, Preparation and fluorescence properties of fluoroaluminate glasses containing Eu2+ ions Journal of Non-crystalline Solids. ,vol. 213, pp. 266- 270 ,(1997) , 10.1016/S0022-3093(97)00011-2
Frank C. Palilla, Albert K. Levine, Maija R. Tomkus, Fluorescent Properties of Alkaline Earth Aluminates of the Type MAl[sub 2]O[sub 4] Activated by Divalent Europium Journal of The Electrochemical Society. ,vol. 115, pp. 642- 644 ,(1968) , 10.1149/1.2411379
D. L. Dexter, A Theory of Sensitized Luminescence in Solids The Journal of Chemical Physics. ,vol. 21, pp. 836- 850 ,(1953) , 10.1063/1.1699044
Yukio Narukawa, Isamu Niki, Kunihiro Izuno, Motokazu Yamada, Yoshinori Murazaki, Takashi Mukai, Phosphor-Conversion White Light Emitting Diode Using InGaN Near-Ultraviolet Chip Japanese Journal of Applied Physics. ,vol. 41, pp. 371- ,(2002) , 10.1143/JJAP.41.L371
S.H.M. Poort, G. Blasse, The influence of the host lattice on the luminescence of divalent europium Journal of Luminescence. pp. 247- 249 ,(1997) , 10.1016/S0022-2313(96)00360-2
Thomas L. Barry, Fluorescence of Eu2+‐Activated Phases in Binary Alkaline Earth Orthosilicate Systems Journal of The Electrochemical Society. ,vol. 115, pp. 1181- 1184 ,(1968) , 10.1149/1.2410935
고탄소질함유 점토벽돌의 내부흑심제거 속도에 대한 연구 Journal of The Korean Ceramic Society. ,vol. 43, pp. 315- 319 ,(2006) , 10.4191/KCERS.2006.43.5.315
Al(OH)₃-SiO₂-AlF₃ 조성으로 합성된 뮬라이트 휘스커의 특성평가 Journal of The Korean Ceramic Society. ,vol. 43, pp. 320- 326 ,(2006) , 10.4191/KCERS.2006.43.5.320