用全像術增強有機發光二極體外部輸出效率之方法

A Holographic Method for Increasing External Light Output Efficiency of Organic Light-Emitting Diodes

薛翰聰(Han-Tsung Hsueh)

指導教授 ： 劉華光

國立臺灣大學/電機資訊學院/光電工程學研究所/碩士(2004年)

https://doi.org/10.6342/NTU.2004.00627

摘要

本論文提出一個使用相位全像術的新方法來增加有機發光二極體的外部耦合效率。我們簡短扼要的復習了有機發光二極體的型體結構、操作原理、發光模型與已報導的增加外部耦合效率的方法並據此提出了經由使用相位全像術來改善效率的理念。論文提出三個基於有機發光二極體基板的上方、下方與雙面的全像相位調變的實驗方法。這種相位全像術可以預期將發射出來的光直線導出有機發光二極體元件因此可以改善外部發光耦合效率。在一些簡化全像實驗示範後，我們討論了角度變化與光頻譜色散對繞射效率的影響。最後，我們討論了實驗上的困難以及提出未來對於顯示與發光應用上所要面對重要的課題。

關鍵字

全像術 ； 有機發光二極體

並列摘要

In this thesis, we have proposed a new method of using phase holograms to increase the external light coupling efficiency of the organic light-emitting diodes (OLEDs). We have reviewed the physical structures, operating principles, light emission models and methods of increasing the external light coupling efficiency of an OLED and proposed the improvement of the efficiency by the use of phase holograms. We have proposed three experimental approaches based on the holographic phase modification of the front, back, or both sides of the substrate of the OLED. The phase holograms are expected to be able to guide the emission straight out from the OLED device and hence the external light coupling efficiency can be improved. After we demonstrate the simplified holographic experiment, the diffraction efficiency of the hologram versus angular variation and spectrum dispersion of the incident light has been discussed. Finally, we have discussed the challenges in experiments and suggested future work for this important topic that is useful for display and illumination applications.

並列關鍵字

holography ； organic light-emitting diode

參考文獻

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