Full down-conversion of amber-emitting phosphor-converted light-emitting diodes with powder phosphors and a long-wave pass filter

Cited 18 time in webofscience Cited 0 time in scopus
  • Hit : 376
  • Download : 894
This paper reports the possibility of a facile optical structure to realize a highly efficient monochromatic amber-emitting light-emitting diode (LED) using a powder-based phosphor-converted LED combined with a long-wave pass filter (LWPF). The capping of a blue-reflecting and amber-passing LWPF enhances both the amber emission from the silicate amber phosphor layer and the color purity due to the blocking and recycling of the pumping blue light from the InGaN LED. The enhancement of the luminous efficacy of the amber pc-LED with a LWPF (phosphor concentration 20 wt%, 39.4 lm/W) is 34% over that of an amber pc-LED without a LWPF (phosphor concentration 55 wt%, 29.4 lm/W) at 100 mA and a high color purity (> 96%) with Commission International d'Eclairage (CIE) color coordinates of x = 0.57 and y = 0.42. (C) 2010 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2010-05
Language
English
Article Type
Article
Keywords

RED PHOSPHOR; NITRIDES; LEDS

Citation

OPTICS EXPRESS, v.18, no.11, pp.11063 - 11072

ISSN
1094-4087
DOI
10.1364/OE.18.011063
URI
http://hdl.handle.net/10203/20119
Appears in Collection
PH-Journal Papers(저널논문)
Files in This Item
000278512300017.pdf(1.19 MB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 18 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0