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A compact polymer–inorganic hybrid gas barrier nanolayer for flexible organic light-emitting diode displays
npj Flexible Electronics ( IF 14.6 ) Pub Date : 2022-04-13 , DOI: 10.1038/s41528-022-00154-y
Seung Hun Kim , Seung Yong Song , Soo Youn Kim , Moon Won Chang , Hyo Jeong Kwon , Kwan Hyuck Yoon , Woo Yong Sung , Myung Mo Sung , Hye Yong Chu

Atomic layer infiltration technology allows the formation of a nanometer-thick polymer-inorganic hybrid barrier layer in polymer material for flexible organic light-emitting diode (OLED) displays. In this study, according to transmission electron microscopy and secondary-ion mass spectrometry analysis results under various process conditions, a compact polymer-inorganic hybrid nanolayer was successfully formed in a polymer and good barrier performance was revealed with a low water vapor transmission rate under optimal process conditions. Additionally, through gas chromatography-mass spectrometry measurements after ultra-violet radiation testing, polymer out-gassing decreased compared to bare polymers. Based on barrier properties, the polymer with a polymer-inorganic hybrid barrier nanolayer was applied to a flexible OLED display as a substrate. During storage tests and folding tests, the flexible OLED display exhibits good reliability and better flexibility compared to those with an inorganic barrier layer. These results confirm that the polymer-inorganic hybrid nanolayer is suitable for barrier layer formation in flexible OLED displays.



中文翻译:

用于柔性有机发光二极管显示器的紧凑型聚合物-无机混合气体阻隔纳米层

原子层渗透技术允许在聚合物材料中形成纳米厚的聚合物-无机混合阻挡层,用于柔性有机发光二极管 (OLED) 显示器。在本研究中,根据不同工艺条件下的透射电子显微镜和二次离子质谱分析结果,在聚合物中成功形成了致密的聚合物-无机杂化纳米层,并显示出良好的阻隔性能,在最佳条件下水蒸气透过率较低。工艺条件。此外,通过紫外辐射测试后的气相色谱-质谱测量,与裸聚合物相比,聚合物脱气减少。基于阻隔性能,将具有聚合物-无机混合阻隔纳米层的聚合物作为基板应用于柔性 OLED 显示器。在储存测试和折叠测试中,与无机阻隔层相比,柔性OLED显示器表现出良好的可靠性和更好的柔韧性。这些结果证实聚合物-无机杂化纳米层适用于柔性OLED显示器中的阻挡层形成。

更新日期:2022-04-13
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