Correlation of activation energy between LEDs and luminaires in the lumen depreciation test

Abstract

This paper investigated the correlation of activation energy between LED light source and LED luminaire in lumen depreciation test. Two nonlinear fitting methods were used to verify the stability of the different algorithms to extract the activation energy. The results show that the activation energy of LED luminaire is very close to the LED light source. Activation Energy is typically around 0.20eV and ranges from 0.18eV to 0.23eV for LED luminaire, compared to typically 0.17eV and ranging from 0.11eV to 0.26eV of LED light source.