Abstract
In the past few decades, the injection and transporting characteristics of charge carriers in organic light emitting diodes (OLEDs) have been analyzed using hole‐only and electron‐only devices (HODs and EODs). However, such methods cannot fully explain the dynamic characteristics of OLEDs such as charge accumulation and recombination. In this study, we well‐established the combination of modulus spectroscopy and capacitance‐voltage measurement and applied it to describe the carrier dynamics in OLED devices.
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