【摘 要】
：
Here,this work presents an air-stable ultrabright inverted organic light-emitting device (OLED) by using zinc ion-chelated polyethylenimine (PEI) as electron injection layer.The zinc chelation is dem-onstrated to increase the conductivity of the PEI by th
【机 构】
：
State Key Laboratory of Integrated Optoelectronics,College of Electronics Science and Engineering,Ji
论文部分内容阅读
Here,this work presents an air-stable ultrabright inverted organic light-emitting device (OLED) by using zinc ion-chelated polyethylenimine (PEI) as electron injection layer.The zinc chelation is dem-onstrated to increase the conductivity of the PEI by three orders of magnitude and pas-sivate the polar amine groups.With these physicochemical properties,the inverted OLED shows a record-high external quan-tum efficiency of 10.0％ at a high bright-ness of 45,610 cd m-2 and can deliver a maximum brightness of 121,865 cd m-2.Besides,the inverted OLED is also dem-onstrated to possess an excellent air stabil-ity (humidity,35％) with a half-brightness operating time of 541 h@1000 cd m-2 without any protection nor encapsulation.
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