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Highly Transparent and Flexible Organic Light‐Emitting Diodes with Structure Optimized for Anode/Cathode Multilayer Electrodes
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2015-11-02 , DOI: 10.1002/adfm.201502542 Dong-Young Kim 1 , Yun Cheol Han 1 , Hyun Cheol Kim 1 , Eun Gyo Jeong 1 , Kyung Cheol Choi 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2015-11-02 , DOI: 10.1002/adfm.201502542 Dong-Young Kim 1 , Yun Cheol Han 1 , Hyun Cheol Kim 1 , Eun Gyo Jeong 1 , Kyung Cheol Choi 1
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In this study, a dielectric layer/metal/dielectric layer (multilayer) electrode is proposed as both anode and cathode for use in the fabrication of transparent and flexible organic light‐emitting diodes (TFOLEDs). The structure of multilayer electrodes is optimized by systematic experiments and optical calculations considering the transmittance and efficiency of the device. The details of the multilayer electrode structure are [ZnS (24 nm)/Ag (7 nm)/MoO3 (5 nm)] and [ZnS (3 nm)/Cs2CO3 (1 nm)/Ag (8 nm)/ZnS (22 nm)], as anode and cathode, respectively. The optimized TFOLED design is fabricated on a polyethylene terephthalate (PET) substrate, and the device shows high transmittance (74.22% around 550 nm) although the PET substrate has lower transmittance than glass. The TFOLEDs operate normally under compressive stress; degradation of electrical characteristics is not observed, comparable to conventional OLEDs with ITO and Al as electrodes. In addition, because the fabricated TFOLEDs show a nearly Lambertian emission pattern and a negligible shift of Commission International de l'Eclairage (CIE) coordination, it is concluded that the fabricated TFOLEDs are suitable for use in displays.
中文翻译：
具有高度透明和柔性的有机发光二极管，其结构针对阳极/阴极多层电极进行了优化
在这项研究中，提出了一种介电层/金属/介电层（多层）电极作为阳极和阴极，用于制造透明且柔性的有机发光二极管（TFOLED）。考虑到器件的透射率和效率，可通过系统实验和光学计算来优化多层电极的结构。多层电极结构的细节为[ZnS（24nm）/ Ag（7nm）/ MoO 3（5nm）]和[ZnS（3nm）/ Cs 2 CO 3（1nm）/ Ag（8nm）/ ZnS（22nm）]分别作为阳极和阴极。优化的TFOLED设计是在聚对苯二甲酸乙二酯（PET）基板上制造的，尽管PET基板的透射率比玻璃低，但该器件显示出高透射率（550 nm附近为74.22％）。TFOLED在压缩应力下正常运行；与传统的以ITO和Al为电极的OLED相比，没有观察到电特性的下降。此外，由于制成的TFOLED显示出近乎朗伯的发射图形，而国际照明委员会（CIE）协调的变化可忽略不计，因此可以得出结论，制成的TFOLED适合用于显示器。
更新日期：2015-11-02
中文翻译：
具有高度透明和柔性的有机发光二极管，其结构针对阳极/阴极多层电极进行了优化
在这项研究中，提出了一种介电层/金属/介电层（多层）电极作为阳极和阴极，用于制造透明且柔性的有机发光二极管（TFOLED）。考虑到器件的透射率和效率，可通过系统实验和光学计算来优化多层电极的结构。多层电极结构的细节为[ZnS（24nm）/ Ag（7nm）/ MoO 3（5nm）]和[ZnS（3nm）/ Cs 2 CO 3（1nm）/ Ag（8nm）/ ZnS（22nm）]分别作为阳极和阴极。优化的TFOLED设计是在聚对苯二甲酸乙二酯（PET）基板上制造的，尽管PET基板的透射率比玻璃低，但该器件显示出高透射率（550 nm附近为74.22％）。TFOLED在压缩应力下正常运行；与传统的以ITO和Al为电极的OLED相比，没有观察到电特性的下降。此外，由于制成的TFOLED显示出近乎朗伯的发射图形，而国际照明委员会（CIE）协调的变化可忽略不计，因此可以得出结论，制成的TFOLED适合用于显示器。
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