Comparison of Electrical Properties and Thermal Degradation of RGB-Organic Light Emitting Diodes

作者：Choi Pyungho; Park Hyunae; Kim Hyunwoo; Kim Sangsoo; Choi Byoungdeog^*

来源：Journal of Nanoscience and Nanotechnology, 2016, 16(10): 10365-10368.

DOI：10.1166/jnn.2016.13161

• OLEDs
• Electrical Characteristic
• Temperature Dependence
• Degradation

The electrical properties and thermal degradation of red (R), green (G), and blue (B) organic-light-emitting-diodes (OLEDs) were characterized using the current-voltage (I-V) method. We investigated the temperature-dependent electrical degradation by determining the ideality factor n, series resistance r(s), and barrier height phi(B). The turn-on voltage for the R-OLED drastically decreased as temperature increased, whereas the others gradually decreased. Among the three types of OLEDs tested, the R-OLED showed the lowest current values under forward bias conditions as well as a severe temperature-dependency beyond the quasi-neutral region (QNR). The temperature-dependent variations of n and rs were largest for the R-OLED compared with the G-and B-OLEDs. This means that the R-OLED is the most easily degraded under thermal stress compared with the G-and B-OLEDs.

• 出版日期2016-10