Thermal analyses and flexible substrate modification for improving lifetime of organic light-emitting diodes

• Main Authors: Hsin-Hung Huang, 黃莘閎
• Other Authors: An-Chi Wei
• Format: Others
• Language: en_US
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/y536kj

碩士 === 國立中央大學 === 光機電工程研究所 === 107 === In this study, we propose a methodology to enhance the lifetime of flexible organic light-emitting diodes (FOLEDs). By means of improving the thermal conduction on the substrate, we can increase the efficiency of thermal dissipation of the FOLED and optimize its lifetime. Using self-developed model in simulation software, COMSOL, and Arrhenius equation, we estimated the lifetime firstly. Next, we measured luminance and thermal distribution of a small-area white FOLED via a luminometer and a thermographic camera. After the comparisons between simulation and measured results, we corrected the constructed model. Furthermore, we predicted the lifetime of large-area OLED lighting panels. This proposed substrate is expected to extend the lifetime and to improve OLEDs’ performance obviously.