2-phosphor-converted white light-emitting diodes using oxynitride/nitride phosphors

被引：566
作者：
Xie, Rong-Jun
Hirosaki, Naoto
Kimura, Naoki
Sakuma, Ken
Mitomo, Mamoru
机构：
[1] Natl Inst Mat Sci, Nano Ceram Ctr, Tsukuba, Ibaraki 3050044, Japan
[2] Fujikura Ltd, Sakura, Chiba 2858550, Japan
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 19期
关键词：
D O I：
10.1063/1.2737375
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Green alpha-sialon:Yb2+ and red Sr2Si5N8:Eu2+ oxynitride/nitride phosphors have been demonstrated as potential downconversion luminescent materials for white light-emitting diodes (LEDs). In this letter, the authors attempt to fabricate white LEDs by combining alpha-sialon:Yb2+ and Sr2Si5N8:Eu2+ with a blue LED die and report their optical properties. These two phosphors lend themselves for use in 2-phosphor-converted white LEDs with promising properties: a wide range of tunable correlated color temperature (2700-6700 K), acceptable color rendering index (82-83), and luminous efficacy (17-23 lm/W). These LEDs are acceptable for general lighting.
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共 20 条
  • [1] TEMPERATURE-DEPENDENT STUDIES OF CATHODOLUMINESCENCE OF GREEN BAND OF ZNO CRYSTALS
    BHUSHAN, S
    CHUKICHEV, MV
    [J]. JOURNAL OF MATERIALS SCIENCE LETTERS, 1988, 7 (04) : 319 - 321
  • [2] Characterization and properties of green-emitting β-SiAlON:Eu2+ powder phosphors for white light-emitting diodes -: art. no. 211905
    Hirosaki, N
    Xie, RJ
    Kimoto, K
    Sekiguchi, T
    Yamamoto, Y
    Suehiro, T
    Mitomo, M
    [J]. APPLIED PHYSICS LETTERS, 2005, 86 (21) : 1 - 3
  • [3] Temperature-dependent emission spectra of M2SiO4:Eu2+ (M = Ca, Sr, Ba) phosphors for green and greenish white LEDs
    Kim, JS
    Park, YH
    Kim, SM
    Choi, JC
    Park, HL
    [J]. SOLID STATE COMMUNICATIONS, 2005, 133 (07) : 445 - 448
  • [4] Extrahigh color rendering white light-emitting diode lamps using oxynitride and nitride phosphors excited by blue light-emitting diode
    Kimura, Naoki
    Sakuma, Ken
    Hirafune, Syunichiro
    Asano, Kenichiro
    Hirosaki, Naoto
    Xie, Rong-Jun
    [J]. APPLIED PHYSICS LETTERS, 2007, 90 (05)
  • [5] Luminescence properties of Ce3+-activated alkaline earth silicon nitride M2Si5N8 (M = Ca, Sr, Ba) materials
    Li, YQ
    de With, G
    Hintzen, HT
    [J]. JOURNAL OF LUMINESCENCE, 2006, 116 (1-2) : 107 - 116
  • [6] Luminescence properties of Eu2+-activated alkaline-earth silicon-oxynitride MSi2O2-δN2+2/3δ (M = Ca, Sr, Ba):: A promising class of novel LED conversion phosphors
    Li, YQ
    Delsing, ACA
    de With, G
    Hintzen, HT
    [J]. CHEMISTRY OF MATERIALS, 2005, 17 (12) : 3242 - 3248
  • [7] Highly efficient all-nitride phosphor-converted white light emitting diode
    Mueller-Mach, R
    Mueller, G
    Krames, MR
    Höppe, HA
    Stadler, F
    Schnick, W
    Juestel, T
    Schmidt, P
    [J]. PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2005, 202 (09): : 1727 - 1732
  • [8] Narukawa Y., 2005, Oyo Buturi, V74, P1423
  • [9] Sakuma K, 2005, IEICE T ELECTRON, VE88C, P2057, DOI 10.1093/iete1e/e88-c.11.2057
  • [10] Warm-white light-emitting diode with yellowish orange SiAlON ceramic phosphor
    Sakuma, K
    Omichi, K
    Kimura, N
    Ohashi, M
    Tanaka, D
    Hirosaki, N
    Yamamoto, Y
    Xie, RJ
    Suehiro, T
    [J]. OPTICS LETTERS, 2004, 29 (17) : 2001 - 2003
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