Abstract
We propose a structure of a high-speed multilayer organic light-emitting diode (OLED). The different organic materials have been chosen so that the barrier potential between two adjacent layers is smaller than 0.2 eV, which causes the charge carriers to move easily between layers to reach the emitting layer. The static and dynamic behaviors of the OLED have been analyzed numerically. The results from simulation show that the proposed OLED structure has an electroluminescence delay time of about 30 ns, and hence can respond to electrical pulses with a repetition rate of 2 MHz. Moreover, the device can provide good features such as high light emission efficiency, low voltage DC driving, and thermal stability.
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