Abstract
We demonstrated the influence of external thermal stress on blue phosphorescent organic lightemitting diodes. We fabricated devices using the same structure and materials, including a low glass transition temperature material, and the devices were then annealed at 50, 60, 70, and 80 °C to compare their properties to those of pristine device. In this study, we observed a decrease in the current density-voltage-luminance and lifetime due to thermal stress, and we also used various analysis methods, such as impedance spectroscopy, to obtain detailed measurements to determine the degradation mechanisms of the device.
Original language | English |
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Pages (from-to) | 14-19 |
Number of pages | 6 |
Journal | Nanoscience and Nanotechnology Letters |
Volume | 9 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2017 Jan |
Keywords
- Blue phosphorescent organic light-emitting diode
- Crystallization
- Degradation
- Orinterdiffusion
- Thermal stress
ASJC Scopus subject areas
- Materials Science(all)