Thermal Analysis of Organic Light Emitting Diodes Based on Basic Heat Transfer Theory
ZHANG Wen-Wen1**, WU Zhao-Xin2, LIU Ying-Wen3, DONG Jun1, YAN Xue-Wen1, HOU Xun2
1School of Electronic Engineering, Xi'an University of Post & Telecommunication, Xi'an 710121 2Key Laboratory for Physical Electronics and Devices of the Ministry of Education, & Key Laboratory of Photonics Technology for Information of Shaanxi Province, School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049 3MOE Key Laboratory of Thermo-Fluid Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049
Abstract：We investigate the thermal characteristics of standard organic light-emitting diodes (OLEDs) using a simple and clear 1D thermal model based on the basic heat transfer theory. The thermal model can accurately estimate the device temperature, which is linearly with electrical input power. The simulation results show that there is almost no temperature gradient within the OLED device working under steady state conditions. Furthermore, thermal analysis simulation results show that the surface properties (convective heat transfer coefficient and surface emissivity) of the substrate or cathode can significantly affect the temperature distribution of the OLED.
2015, Vol. 32 
