| Summary: | 碩士 === 國立臺灣大學 === 光電工程學研究所 === 101 === Organic light-emitting devices(OLEDs) have been developed rapidly in recent years due to applications in displays and lighting. However, the external quantum efficiency is still limited due to refraction index mismatching.
In this thesis, we calculated the external quantum efficiency of OLEDs based on a dipole emission model and the transfer matrix method. We simulate various structures of different substrates, anodes, and electron-transport layers, and also analyze the mode distribution of OLEDs, including radiation modes, substrate modes, waveguide modes, and surface plasmon modes.
Next, based on simulation results, we used GLAD to fabricate transparent ITO anodes with refraction indices close to organic layers, and used them to fabricate them with reduced waveguide modes. Furthermore, high-index substrates and high-index lens were used to couple substrate modes out to air from the index-matching OLED.
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