TITLE

Efficient white and red light emission from GaN/tris-(8-hydroxyquinolato) aluminum/platinum(II) meso-tetrakis(pentafluorophenyl) porphyrin hybrid light-emitting diodes

AUTHOR(S)
Hai-Feng Xiang, Jean-Luc; Sze-Chit Yu, Jean-Luc; Chi-Ming Che; Lai, P. T.
PUB. DATE
August 2003
SOURCE
Applied Physics Letters;8/25/2003, Vol. 83 Issue 8, p1518
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report efficient white and red light emission from GaN light-emitting diode (LED)/tris-(8-hydroxyquinolato) aluminum (Alq[sub 3])/platinum(II) meso-tetrakis(pentafluorophenyl) porphyrin (PtF[sub 20]TPP) hybrid LEDs. Alq[sub 3] was employed to enhance the efficiency of red and white luminescence conversion (LC) LEDs through energy transfer from Alq[sub 3] to PtF[sub 20]TPP. In the white LC-LED, an intense, highly pure white-light emission with CIE_1931 coordinates at x=0.32 and y=0.31 is obtained. The LC-LEDs in this work have relatively high efficiencies, 3.3% for white LC-LED and 4.0% for red LC-LED. The color temperature (T[sub c]), color rendering index (R[sub a]) and luminous efficiency (η[sub L]) of the white LC-LED at 20 mA are 6800 K, 90.6 and 10 lm/W, respectively. © 2003 American Institute of Physics.
ACCESSION #
10603852

 

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