Magnesium-gold binary alloy for organic light-emitting diodes with high corrosion resistance
Magnesium-gold binary alloy for organic light-emitting diodes with high corrosion resistance
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DOI：
10.1116/1.4952408
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发表时间：
2016-07-01
影响因子：
1.4
通讯作者：
Adachi, Chihaya
中科院分区：
文献类型：
--
作者：
Arai, Hiroya;Nakanotani, Hajime;Adachi, Chihaya
作者展示了一种简单的方法来获得阴极，具有高的抗腐蚀性的水和氧气和空气稳定的功函数类似于3.7 eV的掺杂10原子。%的金（Au）进入镁（Mg）基础金属层。具有Mg-Au阴极的有机发光二极管（OLED）实现了与具有常规阴极（诸如铝（Al）和Mg-银（Ag））的器件的电致发光特性相当的电致发光特性。尽管具有Al或Mg-Ag阴极的OLED在空气中操作时表现出其发射面积的显著减小，但是具有Mg-Au阴极的OLED的发射面积在没有任何特定封装的环境空气中操作10天后仅减小10%。这些结果表明，Mg-Au阴极可以放松对封装的严格要求，减少工艺步骤的数量和OLED制造的成本。(C)2016年美国真空学会。
The authors demonstrate a simple approach to obtain cathodes that have a high resistance against corrosion by water and oxygen and an air-stable work-function of similar to 3.7 eV by doping 10 at. % of gold (Au) into a magnesium (Mg) base metal layer. Organic light-emitting diodes (OLEDs) with the Mg-Au cathodes achieved electroluminescence characteristics that are comparable to those of devices with conventional cathodes such as aluminum (Al) and Mg-silver (Ag). Although OLEDs with Al or Mg-Ag cathodes exhibited a significant reduction of their emissive area when operated in air, the emissive area of the OLEDs with Mg-Au cathodes decreased only 10% after 10 days of operation in ambient air without any specific encapsulation. These results suggest that Mg-Au cathodes can loosen the strict requirements for encapsulation, reducing the number of process steps and cost of OLED fabrication. (C) 2016 American Vacuum Society.