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In case of opto-electronic devices, the power applied on the device leaves in a parallel heat and light transport, the interpretation of Rth is not obvious. The paper shows results of a combined optical and thermal measurement for the characterization of power light emitting diodes (LEDs). A model explaining Rth changes at different current levels is proposed.
Components and Packaging Technologies, IEEE Transactions on (Volume:28 , Issue: 1 )
Date of Publication: March 2005