Method and Apparatus for Measuring Internal Quantum Wall Efficiency of LED Based on TRPLTime-resolved Photoluminescence Analysis

摘要

The present invention is TRPL (Time-resolved Photoluminescence) the internal quantum efficiency of LED optical device based on interpretation It relates to a method and apparatus for measurement. Optical device efficiency measuring method includes the steps, and the collected intensity data to collect the intensity data in time with respect to the spontaneous emission light from the optical element is irradiated with light having a pulse shape of excitation light intensity in the optical device, according to the invention a step of calculating the optical device efficiency by analyzing the emission life time of the carriers excited by the optical element on the basis of. ; LED, TRPL (Time -resolved Photoluminescence), the internal quantum efficiency