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Spatially Resolved Thermal Analysis of High Power LEDs Using Thermoreflectance Imaging

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Abstract

2D thermoreflectance images of light-emitting diodes (LEDs) show lateral temperature variation with contact design. Thermoreflectance imaging of LEDs is quantitatively compared with standard bulk temperature measurements. Encapsulation improves heat dissipation and reduces optical reabsorption heating.

© 2011 Optical Society of America

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