A Novel Microscopic Analyzing System for Characterizing Organic Light-emitting Diodes using EFISHG and LBIC Measurements

Abstract

For analyzing carrier behaviors in organic light-emitting diodes, we have developed a novel microscopic analyzing system using electric-field-induced optical second-harmonic generation measurement and laser beam induced current measurement. Distributions of electric fields, interfacial accumulated charges, EL intensity and photo-current are microscopically probed. Our developed analyzing system showed a strong relationship between EL intensity distribution and photo-current distribution, and thus is found helpful for improvement of organic devices.