可撓式有機發光二極體用塑膠基板的製備

本論文，主要為開發一種新穎性可撓式有機發光二極體之塑膠基板。以環烯烴共聚合物 cyclic olefin copolymer(COC) 顆粒為原料，經適當熱壓技術與退火處理後製成薄片。由可見光譜圖可明顯發現，此基板的光學穿透度被提高。退火後某些紅外吸收帶也被增強，主要是因為分子結構重新排列的更為整齊。COC 基板的水氣阻隔能力從水氣滲透試驗中也被測出，其效益優於目前商用 PET 基板。而從原子力顯微鏡的觀察發現，塑膠基板的表面粗糙度在退火後被降低到 1.382 nm 遠優於目前商業上販賣之商品。而在透明導電膜銦錫氧化物 (ITO) 沉積在 COC 基板後，經周期性三點彎曲測試後其表面型態，藉由掃描式電子顯微鏡的觀察，大體上 ITO 層仍維持其連續性。此外，將有機發光材料 NPB/AlQ3 蒸鍍於 COC 基板上實際製作成可撓式 OLED，發現其操作電壓和發光效率遠比 PET 基板來的好。

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並列摘要

In this study, we developed a transparent, flexible plastic substrate for flexible organic light emitting diode (OLED) by simple annealing treatment on the cyclic olefin copolymer (COC). After proper thermal treatment the optical transparency of the flexible plastic substrate is increased this can be observed by visible spectra evidently. In addition, some of the infrared absorption band is enhanced after annealing, since the molecular rearrangement occurred. The moisture resistant ability of the flexible COC substrate was investigated by the water vapor permeation (WVP) measurement. Surface roughness of the plastic substrate is reduced to 1.382 nm after thermal treating which was measured by atomic force microscopy. The surface morpholoy of the cyclic bending with ITO coated on COC substrate have been examined by scanning electron microscopy (SEM). On the other hand, the flexible OLED was constructed on COC substrate with an organic stack of NPB/AlQ3. The results show operating voltage and the lighting efficiency of the OLED with flexible COC substrate are much better than the PET substrate.

並列關鍵字

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參考文獻

[1] R. Ash, R.M. Barrer, and C.G. Pope, Proceedings of the Royal Society A, 1,

[2] C.W. Tang, and S. VanSlyke, Organic Electroluminescent Diodes, Applied

Physics Letters, Vol: 51, pp.913-915 (1987).

polymers OLED materials, Nature, 347, pp.539 (1990).

Shi, M. Hall, and E. Mast, Ultra barrier flexible substrates for flat panel

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可撓式有機發光二極體用塑膠基板的製備

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