Blue and white light emitting high power density LED modules

We present optical measurements of an optimized LED module consisting of 98 blue light emitting LED chips silver-sintered onto an aluminum nitride ceramic substrate within an area of 211 mm 2 . The module is cooled by a high performance microstructured water cooler. Using this cooler a maximum optic...

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Bibliographic Details
Main Authors: Schneider, Marc, Leyrer, Benjamin, Osswald, Bernhard, Herbold, Christian, Herrmann, Franziska, Eilert, Kirsten, Brandner, Jurgen B., Jin-Kai Chang, Yi-Chung Huang, Wood-Hi Cheng
Format: Conference Proceeding
Language:English
Subjects:
Color
Density measurement
Glass
Light emitting diodes
Phosphors
Power system measurements
Temperature measurement
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Summary:We present optical measurements of an optimized LED module consisting of 98 blue light emitting LED chips silver-sintered onto an aluminum nitride ceramic substrate within an area of 211 mm 2 . The module is cooled by a high performance microstructured water cooler. Using this cooler a maximum optical power density of 111.6 W/cm 2 at a forward current of 3003 mA and 1255.6 W electrical input power could be achieved. Placing sintered glass discs doped with yellow phosphor in different concentrations in front of the module, white light with correlated color temperatures between 3600 K and 4200 K was produced.
ISSN:0569-5503
2377-5726
DOI:10.1109/ECTC.2015.7159763