Data are presented on high-power AlGaInN flip-chip light-emitting diodes (FCLEDs). The FCLED is “flipped-over” or inverted compared to conventional AlGaInN light-emitting diodes (LEDs), and light is extracted through the transparent sapphire substrate. This avoids light absorption from the semitransparent metal contact in conventional epitaxial-up designs. The power FCLED has a large emitting area and an optimized contacting scheme allowing high current (200–1000 mA, operation with low forward voltages at 200 mA), and therefore higher power conversion (“wall-plug”) efficiencies. The improved extraction efficiency of the FCLED provides 1.6 times more light compared to top-emitting power LEDs and ten times more light than conventional small-area LEDs. FCLEDs in the blue wavelength regime peak) exhibit external quantum efficiency and wall-plug efficiency at 200 mA and with record light output powers of 400 mW at 1.0 A.
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28 May 2001
Research Article|
May 28 2001
High-power AlGaInN flip-chip light-emitting diodes
J. J. Wierer;
J. J. Wierer
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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D. A. Steigerwald;
D. A. Steigerwald
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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M. R. Krames;
M. R. Krames
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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J. J. O’Shea;
J. J. O’Shea
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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M. J. Ludowise;
M. J. Ludowise
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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G. Christenson;
G. Christenson
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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Y.-C. Shen;
Y.-C. Shen
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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C. Lowery;
C. Lowery
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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P. S. Martin;
P. S. Martin
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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S. Subramanya;
S. Subramanya
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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W. Götz;
W. Götz
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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N. F. Gardner;
N. F. Gardner
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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R. S. Kern;
R. S. Kern
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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S. A. Stockman
S. A. Stockman
LumiLeds Lighting, 370 W. Trimble Road, San Jose, California 95131
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Appl. Phys. Lett. 78, 3379–3381 (2001)
Article history
Received:
February 19 2001
Accepted:
April 02 2001
Citation
J. J. Wierer, D. A. Steigerwald, M. R. Krames, J. J. O’Shea, M. J. Ludowise, G. Christenson, Y.-C. Shen, C. Lowery, P. S. Martin, S. Subramanya, W. Götz, N. F. Gardner, R. S. Kern, S. A. Stockman; High-power AlGaInN flip-chip light-emitting diodes. Appl. Phys. Lett. 28 May 2001; 78 (22): 3379–3381. https://doi.org/10.1063/1.1374499
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